SEG 45 Final_qx4 - Society of Economic Geologists
SEG 45 Final_qx4 - Society of Economic Geologists
SEG 45 Final_qx4 - Society of Economic Geologists
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<strong>SEG</strong><br />
NEWSLETTER<br />
SOCIETY OF ECONOMIC GEOLOGISTS<br />
APRIL 2003 NUMBER 53<br />
N. M. Vielreicher (<strong>SEG</strong> 1994) † , D. I. Groves (<strong>SEG</strong> 1973 F), I. R. Fletcher, N. J. McNaughton, B. Rasmussen<br />
Centre for Global Metallogeny, School <strong>of</strong> Earth and Geographical Sciences,<br />
The University <strong>of</strong> Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.<br />
INTRODUCTION<br />
Accurate dates for mineralization constrain<br />
genetic models for ore systems<br />
and clarify the geological history <strong>of</strong><br />
their host terranes. The most common<br />
geochronometers used to constrain the<br />
timing <strong>of</strong> ore deposition are U-Pb in U-<br />
bearing minerals, Re-Os in sulfides, and<br />
K-Ar and Ar/Ar in K-bearing minerals.<br />
These studies show that available<br />
geochronometers provide accurate dates<br />
for different mineralization styles.<br />
However, in orogenic gold systems,<br />
indisputably mineralization-related<br />
minerals that can be reliably and precisely<br />
dated are rare, and isotopic overprinting<br />
or resetting are commonplace.<br />
Thus, establishing the timing <strong>of</strong> ore<br />
deposition in orogenic gold systems,<br />
particularly in old terranes, has proven<br />
difficult.<br />
One geochronometer that can be<br />
applied in metamorphic terranes is U-<br />
Pb dating <strong>of</strong> monazite and xenotime.<br />
Ore-related hydrothermal monazite and<br />
xenotime have been identified in gold<br />
deposits worldwide, independent <strong>of</strong> host<br />
rocks, metamorphic grade, and age, but<br />
their use as geochronometers in this<br />
context is rare. This article reviews the<br />
results <strong>of</strong> recent geochronological studies<br />
<strong>of</strong> orogenic gold deposits using this<br />
technique, and shows that robust and<br />
precise dates can routinely be obtained.<br />
† Corresponding author: e-mail,<br />
nvielrei@mail.geol.uwa.edu.au<br />
DATING OROGENIC<br />
GOLD SYSTEMS<br />
The ideal way to constrain the age <strong>of</strong> a<br />
mineralization event is to date indisputably<br />
ore-related minerals that have<br />
remained isotopically undisturbed since<br />
their formation. Many geochronological<br />
studies <strong>of</strong> ore-related minerals in orogenic<br />
gold systems have used the Ar/Ar<br />
isotope system to date alteration or vein<br />
minerals such as micas and amphiboles.<br />
In Archean rocks, the resulting<br />
dates are variously interpreted as formation<br />
or cooling ages, or the result <strong>of</strong><br />
later disturbance (e.g., Witt et al.,<br />
1997). A few studies have used the U-Pb<br />
method to date hydrothermal zircon<br />
(Kerrich and King, 1993), titanite (e.g.,<br />
Lin and Corfu, 2002), and rutile (e.g.,<br />
Clarke et al., 1990) from orogenic gold<br />
systems. More recently, developments in<br />
Re-Os methodology have led to successful<br />
calculation <strong>of</strong> ages for sulfides, particularly<br />
molybdenite (e.g., Suzuki et<br />
al., 1993; Stein et al., 1998). However,<br />
molybdenite is rare in most world-class<br />
to giant gold-only orogenic deposits,<br />
although there are cases where gold<br />
lodes overprint earlier molybdenitebearing<br />
mineralization styles.<br />
The role <strong>of</strong> phosphate minerals<br />
Monazite and xenotime are amenable<br />
to U-Pb dating and are isotopically<br />
quite robust, in that they have high<br />
blocking temperatures (>600°C) for<br />
diffusive Pb loss. Although they are<br />
susceptible to recrystallization, such<br />
effects can be identified using back-scattered<br />
electron images (BSI). These minerals<br />
are volumetrically minor but common<br />
phases in many rock types,<br />
including those formed by hydrothermal<br />
systems. In orogenic gold deposits,<br />
xenotime and monazite are documented<br />
as part <strong>of</strong> the primary ore-mineral<br />
assemblage, either in ore-bearing<br />
veins or intergrown with ore minerals in<br />
alteration zones, and can give direct<br />
dates for gold mineralisation. They can<br />
also occur in various pre- and post-ore<br />
rocks, thus providing indirect age constraints.<br />
In all cases, the success <strong>of</strong> phosphate<br />
dating depends on a good understanding<br />
<strong>of</strong> the paragenesis.<br />
A BRIEF HISTORY OF PHOSPHATE<br />
U-Th-Pb GEOCHRONOLOGY<br />
Dating <strong>of</strong> phosphate minerals (particularly<br />
monazite) is well established within<br />
the array <strong>of</strong> U-Pb geochronological methods<br />
(e.g., Parrish, 1990; Viskupic and<br />
Hodges, 2001). Monazite is a valuable<br />
chronometer for metamorphism (e.g.,<br />
Kamber et al., 1998), magmatism (e.g.,<br />
Harrison et al., 1995), sedimentation<br />
(Evans and Zalasiewicz, 1996), and mineralization<br />
(Wang et al., 1994) because <strong>of</strong><br />
its high Th and U contents, low common<br />
Pb content, and its very rare inheritance<br />
from previous geological events.<br />
Xenotime also forms in sedimentary,<br />
metamorphic, and<br />
igneous environments, to page 10 ...
2 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
<strong>SEG</strong><br />
NEWSLETTER<br />
Nº 53—APRIL 2003<br />
EXECUTIVE EDITOR<br />
Brian G. Hoal<br />
NEWS EDITOR<br />
Alice Bouley<br />
PRODUCTION DIRECTOR<br />
Lisa Laird<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>, Inc.<br />
7811 Shaffer Parkway<br />
Littleton, CO 80127 USA<br />
Tel. +1.720.981.7882<br />
Fax +1.720.981.7874<br />
Email: seg@segweb.org<br />
WEB PAGE:<br />
http://www.segweb.org<br />
TECHNICAL EDITOR FOR<br />
FEATURE ARTICLES<br />
Jeremy P. Richards<br />
University <strong>of</strong> Alberta<br />
Dept. <strong>of</strong> Earth and Atmospheric Sciences<br />
Edmonton, AB T6G 2E3 • Canada<br />
Tel. +1.780.492.3430<br />
Fax +1.780.492.2030<br />
E-mail: jeremy.richards@ualberta.com<br />
Note: Feature articles are<br />
peer reviewed before they are<br />
accepted for publication.<br />
The <strong>SEG</strong> Newsletter is published quarterly in<br />
January, April, July and October by the <strong>Society</strong><br />
<strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>, Littleton, Colorado,<br />
exclusively for members <strong>of</strong> the <strong>Society</strong>.<br />
Opinions expressed herein are those <strong>of</strong> the writers<br />
and do not necessarily represent <strong>of</strong>ficial<br />
positions <strong>of</strong> the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>.<br />
When quoting material from the <strong>SEG</strong> Newsletter<br />
please credit both author and publication.<br />
©2003 The <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>, Inc.<br />
Designed & Produced by Type Communications<br />
Westminster, Colorado<br />
Printed by Johnson Printing<br />
Boulder, Colorado<br />
— FOR CONTRIBUTORS —<br />
The <strong>SEG</strong> Newsletter is published for the benefit<br />
<strong>of</strong> the worldwide membership <strong>of</strong> the<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>. We invite<br />
news items and short articles on topics <strong>of</strong><br />
potential interest to the membership. If you<br />
have questions on submittal <strong>of</strong> material,<br />
please call the <strong>SEG</strong> <strong>of</strong>fice at +1.720.981.7882<br />
or send details by FAX to +1.720.981.7874; by<br />
email to <br />
Format: Manuscripts should be double-spaced;<br />
if possible, please submit paper copy AND a<br />
computer diskette in PC format, using WORD or<br />
WordPerfect. Illustrations will be accepted in<br />
digital format or in camera-ready form at publication<br />
scale. All contributions may be edited<br />
for clarity or brevity.<br />
Advertising: Paid advertising is solicited to<br />
help <strong>of</strong>fset publication and mailing costs; for<br />
rates, contact the Executive Director.<br />
Employment opportunities for economic geologists<br />
will be listed free <strong>of</strong> charge.<br />
DEADLINE FOR NEWSLETTER #54:<br />
May 30, 2003<br />
Contents<br />
FEATURE ARTICLE<br />
1 Hydrothermal Monazite and Xenotime Geochronology:<br />
A New Direction for Precise Dating <strong>of</strong> Orogrenic Gold Mineralization<br />
NEWSLETTER COLUMNS<br />
3 From the Executive Editor<br />
4 Letters to the Editor<br />
4 From the Treasurer: Year-End Summary<br />
5 Presidential Perspective: Political Advocacy –<br />
Why <strong>Economic</strong> <strong>Geologists</strong> Should and Do Get Involved<br />
6 <strong>SEG</strong> Canada Foundation Contributions<br />
6 <strong>SEG</strong> Foundation Contributions: The Hugo Dummett Mineral Discovery Fund<br />
7 <strong>SEG</strong> Foundation: Foundation Reviews 2002<br />
9 <strong>SEG</strong> Foundation Contributions<br />
<strong>SEG</strong> NEWS<br />
17 <strong>SEG</strong> Contributions<br />
18 2002 Thayer Lindsley Lecturer Tour: J. Richard Kyle<br />
19 <strong>SEG</strong>’s Centenarian<br />
20 <strong>SEG</strong> Student Chapter News<br />
ECONOMIC GEOLOGY COMMENTARY<br />
21 The Carbonate-hosted Lisheen Zn-Pb-Ag Deposit,<br />
County Tipperary, Ireland<br />
EXPLORATION REVIEWS<br />
23–Alaska · 24–Western United States · 26–Australasia<br />
MEMBERSHIP<br />
29 <strong>SEG</strong> Membership: Candidates and New Fellows, Members and Student Members<br />
40 Personal Notes & News; Corrections<br />
41 <strong>SEG</strong> Membership Application Form<br />
ANNOUNCEMENTS<br />
3 <strong>SEG</strong> Contact Information<br />
28 Symposium—Andean Metallogenesis: New Concepts, Discoveries and Updates<br />
31 <strong>SEG</strong>-GAC-MAC Joint Spring Meeting 2003<br />
35 <strong>SEG</strong> Workshop W1: Understanding Geophysical Inversions for Mineral Exploration<br />
35 32nd International Geological Congress:<br />
A Symposium on Hydrothermal Mineralization on Sediment-Covered Ridges<br />
35 Australasia/Oceania <strong>SEG</strong> Lotto Winner<br />
36 7th Biennial SGA Meeting<br />
36 On-line Journal Access<br />
36 Tethyan Ores Symposium: Call For Papers and Posters<br />
37 Call for Nominations for <strong>SEG</strong> Traveling Lecturers<br />
37 Call for Nominations – Lindgren Award for 2004<br />
37 Call for Nominations for Penrose and <strong>SEG</strong> Silver Medals and Marsden Award<br />
38 CIM Special Issue: Seafloor VMS Deposits<br />
38 Field Trip to the Srednogorje Zone, Bulgaria<br />
39 Ore Deposits Mapping Course in Nevada<br />
39 UNESCO-<strong>SEG</strong> Metallogeny Course in Quito<br />
39 Giggenbach Session Call for Papers<br />
PUBLICATIONS<br />
34 Publications <strong>of</strong> Interest<br />
42 Publications Order Form<br />
CALENDAR<br />
44 Calendar<br />
ADVERTISERS —<br />
16 Activation Laboratories, Ltd.<br />
8 ALS Chemex<br />
6 Anzman, Joseph R.<br />
30 Asterimages.com<br />
17 Balbach Colorado, Inc.<br />
6 Big Sky Geophysics<br />
10 Coopersmith & Associates<br />
17 Els, B. Gerhard<br />
6 Geocon, Inc.<br />
7 Global Mine Discovery Partnership<br />
19 IMDEX Inc.<br />
8 Intl. Geochemical Consultants<br />
7 Larson, Lawrence T., Ph.D.<br />
15 Learning Curve<br />
7 Mining Activity Update<br />
30 MiningProFiles<br />
9 Nutt, Timothy<br />
8 OREAS<br />
7 Petrographic Consultants Intl.<br />
9 Petrology Worldwide<br />
16 Phelps Dodge<br />
8 Recursos del Caribe S.A.<br />
8 Resource Geosciences de Mexico<br />
3 <strong>SEG</strong> 2004 Conference<br />
6 Sinclair Knight Merz<br />
8 XRAL<br />
28 Zonge Engineering & Research
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 3<br />
FROM THE EXECUTIVE EDITOR<br />
In the January issue <strong>of</strong> the <strong>SEG</strong><br />
Newsletter I reported on the success <strong>of</strong><br />
the April Global Exploration meeting in<br />
Denver and on the record number <strong>of</strong><br />
members in the <strong>Society</strong>. These achievements<br />
are all the more remarkable<br />
because <strong>of</strong> the bear market that<br />
adversely affected our investment portfolio<br />
last year—see the Treasurer’s<br />
report in this issue (p. 4). Fortunately,<br />
the <strong>SEG</strong> Council and the Foundation<br />
Board <strong>of</strong> Trustees continue to provide<br />
strong support for the primary activities<br />
that benefit our members. The challenge<br />
<strong>of</strong> reporting on all these activities<br />
within the confines <strong>of</strong> the <strong>SEG</strong> Newsletter<br />
has been eased by shifting material to<br />
the website and using eNews Updates to<br />
provide timely reports and news<br />
releases. This proliferation <strong>of</strong> material<br />
reflects well on the vitality <strong>of</strong> our <strong>Society</strong><br />
and the energy <strong>of</strong> its members, especially<br />
the numerous volunteers.<br />
Recognition <strong>of</strong> exceptional achievement<br />
in the field <strong>of</strong> economic geology<br />
and in the service <strong>of</strong> the <strong>Society</strong> is provided<br />
annually through a number <strong>of</strong><br />
medals, awards, and lectureships.<br />
We’re looking for nominations for the<br />
Lindgren Award, Penrose Gold Medal,<br />
Silver Medal, and Marsden Award<br />
(announcements on p. 37), and <strong>SEG</strong><br />
Traveling Lecturers (International<br />
Exchange, Thayer Lindsley, and<br />
Regional Vice President announcement<br />
also on p. 37). Please help us to<br />
acknowledge our peers.<br />
Among the many meetings involving<br />
the <strong>SEG</strong> this year, none is more central<br />
to our efforts to generate revenue (and<br />
hence avoid increases in membership<br />
dues) than the <strong>SEG</strong>-GAC-MAC meeting<br />
in Vancouver, Canada, in May (p. 31).<br />
As a joint partner in this meeting, the<br />
<strong>SEG</strong> will be sponsoring one symposium,<br />
one workshop, eight sessions, and five<br />
field trips. This will also be the venue<br />
for the joint MDD/<strong>SEG</strong> luncheon and<br />
the presentation <strong>of</strong> an award, together<br />
with BHP Billiton, in memory <strong>of</strong> Hugo<br />
Dummett. Not only<br />
will this be a key<br />
meeting for the <strong>SEG</strong>;<br />
but the technical<br />
content will be <strong>of</strong><br />
importance to every<br />
economic geologist.<br />
We encourage all<br />
members to register<br />
by April 15, 2003,<br />
to enjoy the discounted<br />
rate.<br />
By the time you receive this<br />
BRIAN G. HOAL<br />
<strong>SEG</strong> Executive Director<br />
and Editor<br />
Newsletter, all members will be able to<br />
subscribe to the on-line journal,<br />
<strong>Economic</strong> Geology, for only US$10 per<br />
year (p. 36). Unlimited access to fulltext<br />
articles, known as Gold-level subscription,<br />
has commenced with volume<br />
98 (1). The more Gold-level subscribers<br />
we get, the more we will be able to do in<br />
terms <strong>of</strong> providing on-line formats other<br />
than the current PDF. So please visit<br />
www.segweb.org and remember to “go<br />
Gold.” 1<br />
Contact <strong>SEG</strong><br />
Our Headquarters address is<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>, Inc.<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> Foundation, Inc.<br />
7811 Shaffer Parkway · Littleton, CO 80127, USA<br />
Tel. +720.981.7882 · Fax +720.981.7874<br />
E-mail: seg@segweb.org · Website: www.segweb.org<br />
— Staff Phone & E-mail List —<br />
EXECUTIVE Tel. Extension E-mail Address<br />
Brian G. Hoal .................... 209 ........... director@segweb.org<br />
John A. Thoms.................. 205 ........... development@segweb.org<br />
George R. Ireland .............. 207 ............. treasurer@segweb.org<br />
Christine Horrigan............. 210 ............. christinehorrigan@segweb.org<br />
ACCOUNTING Tel. Extension E-mail Address<br />
Helen Rice ........................ 203 ........... accounting@segweb.org<br />
MEMBERSHIP Tel. Extension E-mail Address<br />
Sue Courtney.................... 204 ........... membership@segweb.org<br />
Shirley King ...................... 212 ........... shirleyking@segweb.org<br />
PUBLICATIONS Tel. Extension E-mail Address<br />
Journal Subscriptions:<br />
Jean Thoms ...................... 208 ........... subscriptions@segweb.org<br />
Publications Production:<br />
Lisa Laird.......................... 206 ........... publications@segweb.org<br />
Publications Editing:<br />
Alice Bouley...................... 202 ........... editing@segweb.org<br />
Publication Sales:<br />
Sherol Roy ........................... 214 ............. sherolroy@segweb.org<br />
PAID ADVERTISEMENT
4 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
LETTERS TO THE EDITOR<br />
Our Readers Write:<br />
Let’s Award the<br />
Explorationist<br />
Dear Editor:<br />
Through a number <strong>of</strong> awards and grant<br />
programs, the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong><br />
<strong>Geologists</strong> honors the contributions<br />
made by economic geologists.<br />
Currently, these awards primarily recognize<br />
workers within academia and<br />
government-supported institutions. The<br />
research typically addresses ore-forming<br />
processes from the regional to the geochemical<br />
scale. Missing from these<br />
awards is one specifically recognizing<br />
achievement in exploration. I recommend<br />
that <strong>SEG</strong> similarly recognize, on<br />
an annual basis, the contributions<br />
made by exploration geologists in<br />
industry, and particularly those who<br />
contributed directly to the discovery <strong>of</strong><br />
significant mineralization.<br />
Although “academic” research geologists<br />
make important contributions to<br />
our understanding <strong>of</strong> mineral systems,<br />
and in this process, provide the building<br />
blocks for constructing exploration<br />
models, explorationists are the fundamental<br />
driving force behind the sustainability<br />
<strong>of</strong> the pr<strong>of</strong>ession. <strong>Economic</strong> geology<br />
would not exist without discovery.<br />
New deposit types and/or new districts<br />
are still being found, and it is through<br />
the discovery process that workers in<br />
academia and in government geological<br />
surveys can then study such systems<br />
and districts and drive the science forward.<br />
Globally, discoveries are made<br />
annually, and it seems fitting that the<br />
geologic teams and principal leaders<br />
making such discoveries be acknowledged<br />
and complimented. This is especially<br />
true as mineral deposits in many<br />
regions are increasingly difficult to find,<br />
owing to exploration maturity and the<br />
need to search under “cover.” The explorationist<br />
faces new challenges, as new<br />
methods and tools are demanded and<br />
these tools become more sophisticated.<br />
Further, as the prices <strong>of</strong> many metals<br />
are currently depressed and may<br />
remain so for some time, companies are<br />
forced to make critical financial decisions<br />
on the viability <strong>of</strong> regional programs<br />
and specific projects. Given these<br />
considerations, it seems only appropriate<br />
that <strong>SEG</strong> pay tribute to the explorationist<br />
with as much fervor as it pays<br />
tribute to the academic or governmentagency<br />
researcher. I therefore recommend<br />
that <strong>SEG</strong> develop an annual mineral<br />
discoverer award. <strong>SEG</strong> should<br />
consider the benefits that such an<br />
award would bring in attracting and<br />
maintaining support from industry-centered<br />
economic geologists. Recognizing<br />
the explorationist should be a fundamental<br />
role <strong>of</strong> <strong>SEG</strong>.<br />
Jacob Margolis (<strong>SEG</strong> 1982)<br />
District Geologist<br />
AngloGold North America<br />
November 16, 2002<br />
FROM THE TREASURER<br />
Year-End Summary<br />
The <strong>Society</strong> and the Foundation finished<br />
2002 in good financial condition, having<br />
accomplished many <strong>of</strong> the financial<br />
goals that they set out to achieve.<br />
Revenues increased about 3.5% from<br />
2001, primarily owing to the highly successful<br />
Global Exploration Conference,<br />
as well as sales and membership dues.<br />
Contributions were down slightly, as<br />
expected, as many donors had accelerated<br />
gifts for the Conference in the previous<br />
year. A small amount <strong>of</strong> capital<br />
gains rounded out total revenue <strong>of</strong><br />
$1.47 million.<br />
Total operating expenses declined in<br />
2002 to $1.33 million compared to<br />
$1.56 million in 2001. Starting in mid-<br />
2001, management <strong>of</strong> the <strong>Society</strong> recognized<br />
the<br />
<strong>SEG</strong><br />
<strong>SEG</strong> Inc. Foundation Total<br />
Revenues $1,209,806 $122,607 $1,332,413<br />
Contributions 54,610 59,602 114,212<br />
Capital Gains 10,659 10,305 20,964<br />
$1,275,075 $192,514 $1,467,589<br />
Operating Expenses $1,249,982 84,630 1,334,612<br />
Grants 0 196,740 196,740<br />
$1,249,982 $281,370 $1,531,352<br />
Net Surplus (Deficit) $25,093 ($88,856) ($63,763)<br />
difficult<br />
financial<br />
outlook for<br />
the mining<br />
industry and<br />
impacts that<br />
it would<br />
have on<br />
members <strong>of</strong><br />
the <strong>Society</strong>.<br />
An aggressive<br />
costcutting<br />
program<br />
was<br />
instituted,<br />
resulting in a successful<br />
reduction<br />
<strong>of</strong> overhead<br />
expenses.<br />
As <strong>of</strong> December<br />
31, 2002, the current<br />
value <strong>of</strong> the<br />
<strong>Society</strong> investment<br />
portfolio<br />
GEORGE R. IRELAND<br />
<strong>SEG</strong> Treasurer<br />
was approximately $8.7 million. Of this<br />
sum, approximately 56% was invested<br />
in equity-oriented mutual funds, 32%<br />
was invested in fixed income mutual<br />
funds and the balance was being held<br />
in cash. While the value <strong>of</strong> the portfolio<br />
declined last year, the benefits <strong>of</strong> the<br />
diversification were apparent, as the<br />
impact was substantially less than<br />
declines in the stock markets as a<br />
whole.<br />
Looking forward, the <strong>Society</strong> remains<br />
in strong financial condition with a<br />
balanced budget planned for 2003 and<br />
a cautious, conservative investment<br />
pr<strong>of</strong>ile. 1
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 5<br />
PRESIDENTIAL PERSPECTIVE<br />
Political Advocacy –<br />
Why <strong>Economic</strong> <strong>Geologists</strong><br />
Should and Do Get Involved<br />
Members <strong>of</strong> the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong><br />
<strong>Geologists</strong> are and should be involved<br />
in the political processes in the countries<br />
in which they work. We are<br />
directly aware <strong>of</strong> the key economic,<br />
social, cultural, and environmental<br />
issues concerning mineral resource<br />
development, and we can bring a scientific<br />
perspective to debates that <strong>of</strong>ten<br />
place passion over reason.<br />
Furthermore, we <strong>of</strong>ten know better than<br />
most people how significant certain<br />
governmental programs, laws, and regulations<br />
are for our pr<strong>of</strong>ession.<br />
As scientists, we tend to eschew getting<br />
involved in political issues for<br />
many reasons—because it seems that<br />
politicians do not always make scientifically<br />
sound decisions, or because we feel<br />
uncomfortable speaking about issues<br />
that are not entirely technical, or<br />
because we are simply too busy at our<br />
regular jobs. We usually are more comfortable<br />
speaking with other scientists<br />
than directly with policy makers, the<br />
press, or the general public, but even<br />
our efforts with other scientists can have<br />
political ramifications.<br />
A good example <strong>of</strong> economic geologists<br />
getting involved is the report on<br />
“Research Opportunities in the Geology<br />
and Geochemistry <strong>of</strong> Mineral Deposit<br />
Systems,” authored by Larry Cathles,<br />
Murray Hitzman, Steve Kesler, and<br />
Hiroshi Ohmoto as the final report <strong>of</strong> a<br />
recent workshop sponsored by the<br />
National Science Foundation (NSF) and<br />
held at the <strong>SEG</strong> Headquarters. This<br />
report, which is available on the <strong>SEG</strong><br />
website at , is written to inform<br />
and encourage the NSF and other agencies<br />
to fund basic research in economic<br />
geology.<br />
Geologic mapping <strong>of</strong> large areas and<br />
at reconnaissance and regional scales<br />
(1:24,000 and smaller) tends to be the<br />
responsibility <strong>of</strong> government, because<br />
the maps have many uses, including<br />
energy, mineral, and water resource<br />
exploration and development; environmental<br />
protection; and reduction <strong>of</strong><br />
risks from natural hazards. <strong>Economic</strong><br />
geologists have been some <strong>of</strong> the key<br />
proponents <strong>of</strong> geologic mapping by<br />
provincial, state, and federal governments,<br />
and they can <strong>of</strong>ten assist government<br />
geologists by identifying critical<br />
areas for mapping. Some <strong>of</strong> the most<br />
detailed geologic maps <strong>of</strong> ore deposits<br />
are being made by company geologists<br />
and consultants, and government geological<br />
surveys are publishing some <strong>of</strong><br />
these maps, thereby helping to make<br />
them available to the public. Recently,<br />
on behalf <strong>of</strong> <strong>SEG</strong>, I wrote a letter to the<br />
President <strong>of</strong> Colombia in support <strong>of</strong><br />
government funding for that country’s<br />
geological survey.<br />
Many other government programs<br />
directly benefit the pr<strong>of</strong>ession <strong>of</strong> economic<br />
geology, and as economic geologists,<br />
we are well positioned to testify on<br />
behalf <strong>of</strong> these programs. For example,<br />
the National Research Council (NRC,<br />
the operating arm <strong>of</strong> the non-governmental<br />
National Academy <strong>of</strong> Sciences)<br />
periodically provides guidance for U.S.<br />
programs, and <strong>SEG</strong> members have<br />
served on and testified before the NRC<br />
study committees.<br />
Two particularly significant reports<br />
(available at ) for us<br />
include the 1996 report on “Mineral<br />
Resources and <strong>Society</strong>: A Review <strong>of</strong> the<br />
U.S. Geological Survey’s Mineral<br />
Resource Surveys Program Plan,” and<br />
the 2002 report on “Evolutionary and<br />
Revolutionary Technologies for<br />
Mining.” An updated review <strong>of</strong> the U.S.<br />
Geological Survey’s minerals program is<br />
currently underway, which is particularly<br />
timely because large cuts to the<br />
program have been proposed, and a<br />
report <strong>of</strong> the NRC has great potential to<br />
influence funding and related policies.<br />
Other prime examples <strong>of</strong> government<br />
programs with applications to<br />
economic geology include Canada’s<br />
Lithoprobe and the U.S. EarthScope programs.<br />
The former has demonstrated<br />
the applicability <strong>of</strong> government-sponsored<br />
seismic and other geophysical<br />
experiments to understanding the geological<br />
framework in which ore deposits<br />
form. The latter is an initiative to characterize<br />
the threedimensional<br />
architecture <strong>of</strong> the<br />
crust using integrated<br />
seismic<br />
tomography,<br />
JONATHAN G. PRICE<br />
<strong>SEG</strong> President<br />
2003<br />
global positioning system measurements,<br />
in situ stress measurements, and<br />
other geophysical investigations <strong>of</strong> tectonic<br />
activity and volcanic processes.<br />
Maintaining objectivity, a key aspect<br />
<strong>of</strong> pr<strong>of</strong>essional ethics in the fields <strong>of</strong> science,<br />
generally gives us the credibility<br />
needed to have influence on policy decisions.<br />
When scientific uncertainty<br />
allows for multiple interpretations or<br />
opposing policies, it is best to say so,<br />
and we should provide decision makers<br />
with options whenever our scientific<br />
analysis doesn’t give us clear directions.<br />
As scientists, we have the obligation to<br />
be objective, and as economic geologists,<br />
we have the opportunity to get<br />
involved, particularly in the political<br />
issues that affect our work. 1<br />
HUGO DUMMETT<br />
MINERAL DISCOVERY<br />
FUND<br />
Contributions to this fund<br />
are listed on p. 6.<br />
Please visit<br />
www.segweb.org/Dummett<br />
Fund.pdf to learn more<br />
about this fund and<br />
its objectives.
6 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
Contributions<br />
<strong>SEG</strong> Canada Foundation<br />
12/1/02–2/27/03<br />
CAD<br />
BLANN, DAVID, CANADA<br />
BONNER, RICK G., CANADA<br />
BOYD, ROBERT, CANADA<br />
BRUMMER, JOHANNES J.,<br />
CANADA<br />
CAMPBELL, F.R., CANADA<br />
CHEN, YONGQING, CHINA<br />
COLLINS, MICHAEL, CANADA<br />
DEBICKI, EDWARD J., CANADA<br />
DOLEJS, DAVID, CANADA<br />
FRANKLIN, JAMES, CANADA<br />
GAUTHIER, MICHEL, CANADA<br />
GODDARD, C.N., CANADA<br />
GONZALEZ, RALPH A., USA<br />
GRACE, KENNETH, CANADA<br />
HODGSON, C.J., CANADA<br />
IDZISZEK, CHET, CANADA<br />
JEFFERSON, CHARLES W.,<br />
CANADA<br />
LEECH, GEOFFREY B., CANADA<br />
LESHER, C.M., CANADA<br />
LIVERTON, TIMOTHY, CANADA<br />
MACMURRAY, BRENDA A.,<br />
CANADA<br />
MACTAVISH, ALLAN, CANADA<br />
MARSDEN, HENRY, CANADA<br />
MERSERREAU, TERRY G.,<br />
CANADA<br />
MOYD, LOUIS, CANADA<br />
MUMIN, HAMID, CANADA<br />
PECK, DAVE, CANADA<br />
POP, NICOLAE, CANADA<br />
RAY, GERALD E., CANADA<br />
RAYA, GERALD E., CANADA<br />
REBAGLIATI, MARK, CANADA<br />
REES, MATTHEW J., CANADA<br />
RILEY, GEORGE C., CANADA<br />
ROBBINS, BRUCE, CANADA<br />
ROBERTS, GWILYM, CANADA<br />
ROBERTSON, D.S., CANADA<br />
SHEARER, JOHAN T., CANADA<br />
STEWART, PETER W., CANADA<br />
SUAREZ LLERENA, JAIME C.,<br />
PERU<br />
TYRWHITT, DAVID S.,<br />
AUSTRALIA<br />
WALFORD, PHILLIP C.,<br />
CANADA<br />
YALAN, JESUS, PERU<br />
Contributions<br />
<strong>SEG</strong> Foundation<br />
The Hugo Dummett Mineral Discovery Fund<br />
(From inception to February 28, 2003)<br />
BHP BILLITON, AUSTRALIA<br />
RIO TINTO, ENGLAND<br />
BALLANTYNE, GEOFF, USA<br />
DOW, JOHN S., AUSTRALIA<br />
HATTORI, KEIKO H. AND<br />
HEDENQUIST, JEFFREY,<br />
CANADA<br />
HUNTER DICKINSON, INC.,<br />
CANADA<br />
NEWMONT MINING CORP., USA<br />
TAHERA CORP., CANADA<br />
C.F. MINERAL RESEARCH,<br />
CANADA<br />
DRAKE, KIMBERLY F., USA<br />
KOUTZ, FLEETWOOD R., USA<br />
MCDOUGALL, JAMES J.,<br />
CANADA<br />
MEYER CREST LTD., USA<br />
MINTER, W.E.L., SOUTH AFRICA<br />
NELSON, ROGER E., USA<br />
NIELSEN, RICHARD L., USA<br />
OAKLEY, CHESTER, USA<br />
PATTON, THOMAS C., USA<br />
RICHARDS, JEREMY, CANADA<br />
SHAVER, KENNETH C., USA<br />
STAUDE, JOHN-MARK, CANADA<br />
THOMPSON, JOHN, CANADA<br />
WOOD, D.G., AUSTRALIA<br />
YOUNG, RICHARD H., USA<br />
JOSEPH R. ANZMAN<br />
Exploration Geophysicist<br />
P.O. Box 370526<br />
Denver, Colorado 80237<br />
303-337-<strong>45</strong>59<br />
telephone/fax<br />
• consulting<br />
• interpretation<br />
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• domestic & foreign<br />
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APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 7<br />
FOUNDATION<br />
Foundation Reviews 2002<br />
The Foundation’s financial figures for 2002<br />
are available. Last year <strong>SEG</strong>F contributed<br />
$281,370 to the <strong>SEG</strong> to help finance programs,<br />
activities, and <strong>Society</strong> operating<br />
expenses. This amounts to a contribution to<br />
<strong>SEG</strong> <strong>of</strong> $76 on behalf <strong>of</strong> every member.<br />
Seventy percent <strong>of</strong> these funds went to support<br />
programs such as Student Research<br />
Grants ($66,000), Student Membership Fees<br />
($31,500), and Student Chapter Support<br />
($9,800). Student programs receive a large<br />
part <strong>of</strong> our support, but other popular programs<br />
funded by <strong>SEG</strong>F are the <strong>SEG</strong> Newsletter<br />
($25,000), Regional VP activities, and lecture<br />
or speaker travel support ($43,500). Foundation<br />
contributed $84,600 to support operating<br />
expenses <strong>of</strong> the <strong>Society</strong>. Besides administration<br />
expenses, this amount includes<br />
portfolio management fees and taxes.<br />
Student Research Grants continue to be<br />
one <strong>of</strong> the <strong>Society</strong>’s most popular progrms.<br />
Students apply for grants, prepare a research<br />
expense budget, and justify scientific basis<br />
for their request. The grant each student<br />
receives is theirs to spend, as required, to<br />
help achieve his or her research goals. The<br />
student controls expenditure <strong>of</strong> the funds<br />
and this provides flexibility that is rare in<br />
these days <strong>of</strong> limited research budgets and<br />
carefully controlled large grants at universities.<br />
Amounts <strong>of</strong> individual research grants<br />
are not large, but the funds can and do make<br />
an important impact on a research project.<br />
Your Foundation’s support for students is an<br />
investment in the future <strong>of</strong> our pr<strong>of</strong>ession as<br />
students are potential leaders <strong>of</strong> future mineral<br />
resource development. The Foundation<br />
is proud to support this activity.<br />
The Foundation will actively solicit<br />
donations to the Hugo Dummett Discovery<br />
Fund this year. Funds received will be used<br />
to support research and educational activities<br />
whose objectives are the improved integration<br />
<strong>of</strong> economic, social and cultural<br />
issues with the science <strong>of</strong> economic geology.<br />
Use <strong>of</strong> the funds in this manner is consistent<br />
with wishes <strong>of</strong> the Dummett family,<br />
and with the dedicated interests and objectives<br />
<strong>of</strong> the late Hugo Dummett. We hope<br />
the fund will help develop leaders in the<br />
application <strong>of</strong> technology to the wise,<br />
acceptable and sustainable development<br />
<strong>of</strong> the world’s natural<br />
resources.<br />
<strong>Final</strong>ly, it is very<br />
important that I<br />
acknowledge the generosity<br />
<strong>of</strong> hundreds <strong>of</strong><br />
<strong>SEG</strong> members<br />
throughout the world.<br />
These members<br />
understand that<br />
RICHARD L. NIELSEN<br />
<strong>SEG</strong> Foundation<br />
President<br />
financial support for the Foundation is an<br />
investment in the future <strong>of</strong> our pr<strong>of</strong>ession.<br />
Further, this support continues to make<br />
membership in the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong><br />
<strong>Geologists</strong> a great bargain. Gifts to the <strong>SEG</strong><br />
Foundation were received in 2002 from<br />
about 300 individual members and<br />
amounted to $59,602. Gifts to the <strong>SEG</strong><br />
Canada Foundation were about $10,000<br />
CDN, and research grants <strong>of</strong> $13,000 CDN<br />
were awarded to Canadian students.<br />
Increasingly, financial support to the<br />
Foundation is being received from outside<br />
the United States and this reflects increased<br />
global support for economic geology by the<br />
<strong>Society</strong>. 1<br />
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John R. Wilson<br />
Michael J. Evans<br />
Ore Discovery and Exploration Services for the Mineral Industry<br />
Lawrence T. Larson, Ph.D.<br />
Registered Pr<strong>of</strong>essional Geologist<br />
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Tel/Fax (775-849-0587) LTLarson@Netscape.net<br />
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8 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
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APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 9<br />
BENAVIDES, ALBERTO, PERU<br />
SEAVOY, RONALD, USA<br />
ADAMS, SAMUEL S., USA<br />
ALLARD, GILLES, USA<br />
APAZA CH., ELISEO, PERU<br />
ARPS, CHARLES, NETHERLANDS<br />
BABCOCK, JR., RUSSELL C., USA<br />
BAILLY, PAUL A., USA<br />
BARTON, JR., PAUL B., USA<br />
BEALE, TIMOTHY, PERU<br />
BEDELL, JR., RICHARD L., USA<br />
BEDOYA CRUZ, RAUL, PERU<br />
BELTHER, JONES, BRAZIL<br />
BETTLES, KEITH, USA<br />
BLAKESTAD, ROBERT B., USA<br />
BONHAM, HAROLD F., USA<br />
BOOKSTROM, ARTHUR H., USA<br />
BROUGHTON, DAVID, USA<br />
BRYANT, DONALD G., USA<br />
BURT, DONALD M., USA<br />
CALKIN, WM. S., USA<br />
CAPPA, JAMES A., USA<br />
CECCHI, ALESSANDRO, ITALY<br />
CHAKU, SURENDER, AUSTRALIA<br />
CHEN, YONGQING, CHINA<br />
CHEVILLON, C. VICTOR, USA<br />
COOK, DOUGLAS R., USA<br />
COOPER, CHRIS, SCOTLAND<br />
COOPERSMITH, HOWARD, USA<br />
COVENEY, RAYMOND, USA<br />
CUADROS MEZA, PERCY D., PERU<br />
DAPPLES, EDWARD C., USA<br />
DELLA LIBERA, MICHELE, ITALY<br />
Contributions<br />
<strong>SEG</strong> Foundation<br />
12/1/02–2/27/03<br />
DIETRICH, RICHARD V., USA<br />
DOE, BRUCE R., USA<br />
DROBECK, PETER, USA<br />
DURNING, WILLIAM P., USA<br />
EHRHARDT, LUTZ, GERMANY<br />
ENRIQUEZ M., ERME, MEXICO<br />
ERICKSON, JR., A.J., USA<br />
ESQUIVIAS F., JOSE A., MEXICO<br />
FONTBOTE, LLUIS, SWITZER-<br />
LAND<br />
FOSTER, R.P., GREAT BRITAIN<br />
FOURNIER, ROBERT, USA<br />
GALEY, JR., JOHN T., USA<br />
GARAY, ENRIQUE, PERU<br />
GERDEMANN, PAUL E., USA<br />
GILLERMAN, VIRGINIA S., USA<br />
GRAF, JOSEPH L., GERMANY<br />
GRAHAM, NICHOLAS, ZIMBABWE<br />
GUERRERO, TOMAS, PERU<br />
GUILBERT, JOHN M., USA<br />
HAMBURGER, RICHARD, USA<br />
HAMMER, DONALD F., USA<br />
HAMMOND, JOHN M., AUSTRALIA<br />
HANNAH, JUDITH, USA<br />
HARDY, DAVID G., USA<br />
HARLAN, BRUCE, USA<br />
HASKINS, ROGER A., USA<br />
HAUCK, STEVEN A., USA<br />
HEIDRICK, TOM L., USA<br />
HEINRICHS, JR., WALTER E., USA<br />
HELKE, ADOLF, USA<br />
HENDERSON, III, FREDERICK B.,<br />
USA<br />
HISHIDA, HAJIME, JAPAN<br />
HITZMAN, MURRAY W., USA<br />
HOLLAND, JOHN S., USA<br />
HOPPER, DAVID, CHILE<br />
JANECKY, DAVID R., USA<br />
JONES, RICHARD D., USA<br />
KESLER, STEPHEN E., USA<br />
KIM, YOU-DONG, KOREA<br />
KOSKI, RANDOLPH A., USA<br />
KRAL, VICTOR E., USA<br />
KYLE, RICHARD J., USA<br />
LACKEY, LARRY L., USA<br />
LARGE, DUNCAN, GERMANY<br />
LEONARD, BEJAMIN F., USA<br />
LESPINASSE, MARC, FRANCE<br />
LINDQVIST, WILLIAM F., USA<br />
LIPTEN, ERIC, PERU<br />
LODDER, CHRIS, PERU<br />
LOGSDON, MARK, USA<br />
LONGO, ANTHONY A., USA<br />
LORGE, DAVID L., USA<br />
LUCAS, OSCAR, PERU<br />
MATSUHISA, YUKIHIRO, JAPAN<br />
MAYNARD, JAMES B., USA<br />
MELDRUM, SIMON, P<br />
METZ, ROBERT A., USA<br />
MILLHOLLAND, MADELYN, USA<br />
MUESSIG, SIEGFRIED, USA<br />
NAKAMURA, KIYOSHI, JAPAN<br />
NAKASHIMA, KAZUO, JAPAN<br />
NEWELL, ROGER A., USA<br />
NORONHA, FERNANDO M.,<br />
PORTUGAL<br />
OSSANDON, GUILLERMO, CHILE<br />
OVERSTREET, WILLIAM, USA<br />
PAAR, WERNER H., AUSTRIA<br />
PANSZE, ARTHUR, USA<br />
PARKER, HARRY M., USA<br />
PARRY, JOHN R., USA<br />
PAVERD, AUBREY, AUSTRALIA<br />
PETERSEN, ERICH U., NORWAY<br />
PETERSEN, MARK, USA<br />
PINEO, III, CHARLES C., USA<br />
POLOVINA, JOSEPH S., USA<br />
POOLE, FORREST G., AUSTRALIA<br />
POP, NICOLAE, CANADA<br />
POTUCEK, TONY L., USA<br />
REED, MARK, USA<br />
REIDEL, STEVEN P., USA<br />
REYNOLDS, ROBERT R., USA<br />
ROBERTSON, JACQUES F., USA<br />
RODRIGUEZ PEVIDA, LUIS S.,<br />
SPAIN<br />
ROWLEY, PETER, USA<br />
RUPPEL, EDWARD T., USA<br />
RUSSELL, ROBERT T., USA<br />
SCHASSBERGER, HERMAN T.,<br />
USA<br />
SCHMIDT, DWIGHT, AUSTRALIA<br />
SEEDORFF, ERIC, USA<br />
SELL, JAMES D., USA<br />
SHAWE, DANIEL R., USA<br />
SHIMIZU, TORU, JAPAN<br />
SHINOHARA, HIROSHI, JAPAN<br />
SILVER, LEON T., USA<br />
SIMS, PAUL, USA<br />
SKINNER, BRIAN J., USA<br />
SMITH, CLAY T., USA<br />
SMITH, SHEA, USA<br />
SNYDER, KENNETH, USA<br />
STEBBINS, ROBERT H., USA<br />
STEED, GEOFFREY M., GREAT<br />
BRITAIN<br />
SUAREZ LLERENA, JAIME C.,<br />
PERU<br />
SWARTHOUT, ANDREW, USA<br />
SWEENEY, PETER H., USA<br />
SZUMIGALA, DAVID J., USA<br />
TAGUCHI, SACHIHIRO, JAPAN<br />
TARANIK, JAMES, GREAT BRITAIN<br />
THAMM, ALBERT G., AUSTRALIA<br />
THERIAULT, BRION, USA<br />
TYRWHITT, DAVID S., AUSTRALIA<br />
VALDIVIA, JOSE, PERU<br />
VARELA-GARCIA, JUAN C., CHILE<br />
VELIZ M., F. JAVIER, PERU<br />
VILLA-IGLESIAS, LUIS, SPAIN<br />
WHITE, WILLIS H., USA<br />
WHITEHEAD, MARK LYNN, SOUTH<br />
AFRICA<br />
WILSON, ROBERT, USA<br />
WIRE, JEREMY, USA<br />
YALAN, JESUS, PERU<br />
ZAHONEY, STEPHEN, USA<br />
ZUFFARDI, PIERO, ITALY<br />
ZUKER, J., USA<br />
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TM<br />
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10 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 1<br />
Hydrothermal Monazite and Xenotime Geochronology (Continued)<br />
commonly associated with zircon, with<br />
which it is isostructural. It is arguably<br />
the best phosphate mineral for U–Pb<br />
geochronology because it has low initial<br />
Pb contents and typically contains<br />
>1,000 ppm U. Furthermore, it appears<br />
to tolerate quite severe self-radiation<br />
from incorporated U and Th (Fletcher et<br />
al., 2000) and remains closed to U- and<br />
Pb-mobility because, like monazite, it<br />
does not become metamict (Aleinik<strong>of</strong>f<br />
and Grauch, 1990; Nasdala et al., 1999;<br />
Vallini et al., 2002). Despite this suitability,<br />
most previous uses <strong>of</strong> xenotime<br />
have been as a thermochronometer,<br />
and its significance as a geochronometer<br />
has only recently been exploited.<br />
Most published geochronological studies<br />
<strong>of</strong> xenotime and monazite have<br />
involved thermal ionization mass spectrometry<br />
(TIMS; e.g., Parrish, 1990),<br />
which ultimately provides the most precise<br />
U-Pb measurements. However,<br />
TIMS analysis cannot distinguish age<br />
heterogeneity within single grains without<br />
employing physical micro-splitting<br />
procedures.<br />
The increasing need for analyses <strong>of</strong><br />
very fine grains, or complex intergrowths,<br />
highlights the importance <strong>of</strong><br />
in situ techniques. The applicability <strong>of</strong><br />
the electron microprobe (EMP) chemical<br />
Th-U-total Pb isochron method (CHIME)<br />
has been demonstrated by several workers<br />
(e.g., Montel et al., 1996) on U- and<br />
Coopersmith &<br />
Associates<br />
Consultants in <strong>Economic</strong> Geology<br />
Howard G. Coopersmith<br />
1205 Steeplechase Court<br />
P.O. Box 1916<br />
Fort Collins, CO 80522 USA<br />
PAID ADVERTISEMENT<br />
ph: 970-217-1008<br />
fax: 970-221-5480<br />
email: diamonds@frii.net<br />
Th-rich monazite and, to a lesser extent,<br />
on xenotime. Analysis is nondestructive,<br />
quick and relatively inexpensive,<br />
and grains <strong>of</strong> 5 µm can be dated.<br />
Unfortunately, it is rather imprecise<br />
(errors <strong>of</strong> ≥ 30–50 m.y. in Archean<br />
rocks), and is not applicable over the<br />
entire geologic timescale, or to samples<br />
with low Th and U. The presence <strong>of</strong> initial<br />
Pb cannot be determined and a<br />
breakdown <strong>of</strong> closed system behavior<br />
due to U-Th-Pb element mobility cannot<br />
be distinguished from real geological<br />
age variability. The proton microprobe<br />
(PIXE; e.g., Bruhn et al., 1999) has lower<br />
detection limits, but is restricted to relatively<br />
large mineral grains, and neither<br />
EMP nor PIXE can measure Pb isotope<br />
compositions. Laser-ablation inductively<br />
coupled plasma mass spectrometry<br />
(LA-ICP-MS) is developing rapidly as<br />
a precise dating technique, yielding<br />
ages with ≤ 3% errors for<br />
Neoproterozoic and older samples<br />
(Horn et al., 2000). However, the minimum<br />
analytical spot size is ~50 mm.<br />
Geochronological studies <strong>of</strong> phosphates<br />
using SIMS (e.g., Kamber et al.,<br />
1998; McNaughton et al., 1999;<br />
Petersson et al., 2001) show that it is the<br />
only technique than can currently provide<br />
precise dates with high spatial resolution.<br />
This is essential because<br />
hydrothermal xenotime and, to a lesser<br />
extent, monazite grains are generally<br />
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 11<br />
et al., 2003). Such overgrowths <strong>of</strong> a few<br />
microns or less have not yet been<br />
recorded in ore-related xenotime.<br />
All geochronological samples studied<br />
at the University <strong>of</strong> Western Australia<br />
are routinely examined with an SEM to<br />
characterize growth zoning, irregularities,<br />
or dissolution features before analysis.<br />
Importantly, in all studies <strong>of</strong> orogenic<br />
gold deposits, the data collected from<br />
hydrothermal monazite and xenotime<br />
define coherent and concordant populations<br />
with little evidence for Pb loss (e.g.,<br />
Nguyen, 1997; Brown et al., 2002), and<br />
207 Pb/ 206 Pb dates for both minerals from<br />
the same deposit are indistinguishable.<br />
This concordancy provides a strong validation<br />
<strong>of</strong> the results.<br />
IDENTIFICATION OF<br />
HYDROTHERMAL PHOSPHATES<br />
Xenotime and monazite display a variety<br />
<strong>of</strong> habits, which are not necessarily<br />
unique to their origin. Diagenetic xenotime<br />
typically forms pyramidal or irregular<br />
syntaxial overgrowths on detrital<br />
zircon that locally extend to fill small<br />
pore spaces (e.g., Vallini et al., 2002).<br />
Metamorphic and hydrothermal xenotime<br />
are also commonly associated with<br />
zircon, as inclusions and irregular and<br />
discontinuous overgrowths (Fig. 1A and<br />
B). Hydrothermal xenotime also occurs<br />
in fractures in intensely altered zircon<br />
(Fig. 1C), or as discrete grains associated<br />
with ore-related minerals (Fig. 1D-F).<br />
Rarely, metamorphic xenotime forms<br />
exsolutions in recrystallized monazite<br />
(Petersson et al., 2001).<br />
Metamorphic and hydrothermal<br />
monazite are also typically associated<br />
with zircon, and metamorphic monazite,<br />
like xenotime, can occur as discrete<br />
grains that either define (Fig. 2A)<br />
or crosscut the penetrative fabric (Fig.<br />
2B; Dawson et al., 2003). Hydrothermal<br />
monazite can form as a vein mineral<br />
and may display an intimate relationship<br />
with ore minerals (Fig. 3).<br />
In cases where multiple generations<br />
<strong>of</strong> phosphate minerals are present in a<br />
sample, differences in chemical composition<br />
can <strong>of</strong>ten be used as a more precise<br />
indicator <strong>of</strong> origin than crystal morphology.<br />
For example, most<br />
hydrothermal minerals are depleted in<br />
U relative to magmatic grains<br />
(McNaughton et al., 1999). Although<br />
this leads to less precise SHRIMP dates<br />
<strong>of</strong> some hydrothermal minerals, the U<br />
contents <strong>of</strong> hydrothermal xenotime, in<br />
particular, are still sufficient for precise<br />
FIGURE 1. Back-scattered electron microscope images <strong>of</strong> hydrothermal xenotime.<br />
(A) Xenotime on detrital zircon (Witwatersrand Basin, South Africa; image by N. Kositcin);<br />
(B) xenotime in and around altered magmatic zircon (Golden Mile, Western Australia);<br />
(C) xenotime with ore-related arsenopyrite and zircon (Fazenda Brasileiro gold deposit,<br />
Brazil; image by K. Pires); (D) xenotime in gold-bearing brecciated and altered dolerite<br />
(Kalgoorlie, Western Australia); (E) xenotime intergrown with chalcopyrite (Muflura,<br />
Zambian Copper Belt; image by G. Dawson); (F) xenotime in proximal gold-related alteration<br />
zone in conglomerate (Damang, Ghana; image by J-P. Pigois).<br />
FIGURE 2. Back-scattered electron microscope images <strong>of</strong> metamorphic monazite and<br />
xenotime from Mt Barren Group pelites, Western Australia (images by G. Dawson).<br />
(A) Monazite oriented parallel to regional foliation; (B) xenotime overgrowth on zircon<br />
that cross-cuts the regional foliation.<br />
to page 12 ...
12 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 11<br />
Hydrothermal Monazite and Xenotime Geochronology (Continued)<br />
FIGURE 3. Back-scattered electron microscope images <strong>of</strong> hydrothermal monazite.<br />
(A) Monazite with minute gold inclusion in altered and mineralized dolerite (Kalgoorlie,<br />
Western Australia); (B) monazite in gold bearing, brecciated and altered dolerite<br />
(Kalgoorlie, Western Australia); (C) monazite in gold-bearing quartz-pyrite vein (Pine<br />
Creek, Australia; image by K. Şener); (D) monazite associated with pyrite (Muflura,<br />
Zambian Copper Belt; image by G. Dawson).<br />
SHRIMP geochronology (McNaughton<br />
et al., 1999). A detailed study by<br />
Kositcin et al. (2003) illustrates that, by<br />
using EMP, xenotime composition can<br />
be used to indicate its mode <strong>of</strong> formation<br />
(Fig. 4). Hydrothermal xenotime<br />
has distinctly lower U contents than<br />
igneous xenotime, and the relative<br />
MREE-HREE abundance, normalized<br />
HREE slope, and presence or absence <strong>of</strong><br />
a negative Eu anomaly in xenotime<br />
from the Witwatersrand Basin provide,<br />
in combination, excellent chemical discriminators<br />
<strong>of</strong> xenotime origin. Kositcin<br />
et al. (2003) also stress combining geochemical<br />
classifications with detailed<br />
petrography and age data to produce a<br />
definitive interpretation.<br />
OCCURRENCE OF<br />
HYDROTHERMAL PHOSPHATES<br />
Hydrothermal phosphate minerals form<br />
in many hydrothermal environments,<br />
including orogenic gold deposits where<br />
they occur in pre- and post-ore rocks, ore<br />
veins, and in alteration zones. Brown et<br />
al. (2002) described hydrothermal xenotime<br />
and monazite in ore samples from<br />
the Cleo gold deposit in the northeastern<br />
Yilgarn craton, Western Australia,<br />
and vein monazite and xenotime were<br />
also identified in ore samples from a<br />
selection <strong>of</strong> nearby deposits (B. Salier,<br />
unpub. data). In fact, monazite and<br />
xenotime are identified in ore veins and<br />
intergrown with ore-related alteration<br />
minerals in all deposits in the eastern<br />
Yilgarn craton where samples have<br />
been examined in detail. For example,<br />
in the Golden Mile, monazite and xenotime<br />
in mineralized and intensely<br />
altered Golden Mile Dolerite are spatially<br />
associated with apatite, rutile,<br />
pyrite, chalcopyrite, sphalerite, tennantite-tetrahedrite,<br />
telluride minerals, and<br />
gold (Figs. 1D and 3A, B).<br />
An interesting case is provided by the<br />
High Rock Island gold deposit in the<br />
Island Lake greenstone belt in<br />
Manitoba, where the main quartz vein<br />
contains hydrothermal monazite (Lin<br />
and Corfu, 2002). The timing <strong>of</strong> quartz<br />
vein formation relative to gold deposition<br />
is equivocal, because the main vein<br />
is mineralized only where it is cut by a<br />
later fault. The U-Pb age <strong>of</strong> the monazite<br />
is significantly older than that <strong>of</strong><br />
hydrothermal titanite. The titanite is<br />
interpreted to be related to the gold<br />
event, based on a positive correlation<br />
between its Pb isotope composition and<br />
that <strong>of</strong> gold-related galena (Lin and<br />
Corfu, 2002). Hence, the age <strong>of</strong> the vein<br />
monazite is probably the age <strong>of</strong> original<br />
vein formation, with the implication<br />
that gold deposition was a separate, distinctly<br />
younger event. This is a convincing<br />
example where monazite has not<br />
been reset by a later, overprinting<br />
hydrothermal event.<br />
In the Proterozoic Pine Creek orogen,<br />
Northern Territory, Australia,<br />
hydrothermal monazite and xenotime<br />
are associated with gold at several<br />
deposits (Compston and Matthai, 1994;<br />
Şener et al., in press). At the Goodall<br />
gold deposit, monazite occurs in goldbearing<br />
quartz-pyrite-arsenopyrite veins<br />
as inclusions and along fractures in sulfides<br />
(Fig. 3B), whereas hydrothermal<br />
xenotime occurs in mineralized and<br />
hydrothermally altered turbidites.<br />
Hydrothermal phosphate minerals<br />
also occur in a variety <strong>of</strong> other ore settings,<br />
including the Cu-Au deposits in<br />
the Carajás belt, Brazil (Tallarico et al.,<br />
in press; C. Grainger, unpub. data), as<br />
well as Bayan Obo Fe-REE-Nb deposit in<br />
U (ppm)<br />
Gd N<br />
Igneous<br />
Hydrothermal<br />
Igneous<br />
Hydrothermal<br />
U/Th<br />
Gd/Yb N<br />
FIGURE 4. Geochemical discrimination<br />
plots (after Kositcin et al., 2003) illustrating<br />
the distinct variation in U-Th-REE composition<br />
between igneous and hydrothermal<br />
xenotime in the Witwatersrand basin.<br />
Subscript N denotes values are C1 chrondrite<br />
normalized.
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 13<br />
Mongolia (Wang et al., 1994), and<br />
deposits in the Zambian Copper Belt<br />
(e.g., Fig. 3D; G. Dawson, unpub. data).<br />
EXAMPLES OF HYDROTHERMAL<br />
PHOSPHATE MINERALS<br />
AS CHRONOMETERS IN<br />
OROGENIC GOLD DEPOSITS<br />
Yilgarn craton, Western Australia<br />
The main gold event in the eastern<br />
Yilgarn craton has been described as<br />
occurring between ca. 2.650 and 2.625<br />
Ga (Groves et al., 2000). However, due<br />
to the general lack <strong>of</strong> direct dating, the<br />
exact age <strong>of</strong> gold mineralization remains<br />
controversial; for example, interpretations<br />
by Yeats et al. (1999) are in conflict<br />
with those <strong>of</strong> Vielreicher et al. (2001).<br />
At the Cleo gold deposit, in the northeast<br />
Yilgarn, hydrothermal xenotime<br />
and monazite occur in altered wall rock,<br />
adjacent to ore veins in the Western<br />
Lodes (Brown et al., 2002). These structurally<br />
late, multistage, and brecciated<br />
veins typically contain native gold, electrum,<br />
pyrite, arsenopyrite, tennantite,<br />
and telluride minerals, and formed at<br />
about 300°C. Monazite (with inclusions<br />
2680<br />
2660<br />
2640<br />
2620 2600 2580<br />
Laverton Region<br />
Granny Smith granodiorite: pre-gold<br />
Mt Morgans rhyolitic dike: pre-syn gold<br />
rhyolitic dike: pre-syn gold<br />
Mt Weld<br />
Sunrise / Cleo<br />
Ar/Ar fuchsite<br />
Ar/Ar phlogopite<br />
Kambalda Region<br />
K-Ar carbonatite<br />
Paringa Basalt: pre-gold<br />
rhyodacitic dike: pre-gold<br />
Sunrise shear zone: pre-gold<br />
vein molybdenite: pre-gold<br />
monazite: syn-gold<br />
xenotime: syn-gold<br />
kersantite: pre-gold<br />
quartz-albite dike: pre-gold<br />
* maximum age for sedimentation<br />
Re/Os molybdenite<br />
U/Pb zircon<br />
U/Pb monazite<br />
Kambalda granodiorite: pre-gold<br />
Merougil Sequence: pre-gold*<br />
quartz-albite dike: pre-gold<br />
rutile: syn-gold<br />
monazite: syn-gold<br />
<strong>of</strong> altaite) and xenotime occur as free<br />
grains or are included in ore-related<br />
pyrite. Brown et al. (2002) concluded<br />
that the two phosphate minerals were<br />
deposited during gold mineralization,<br />
and that their age provides a direct date<br />
for gold mineralization. The monazite<br />
and xenotime at Cleo have relatively<br />
low U contents (Brown et al., 2002),<br />
consistent with a hydrothermal origin.<br />
In situ SHRIMP analyses <strong>of</strong> monazite<br />
grains yield concordant analyses with a<br />
weighted mean 207 Pb/ 206 Pb age <strong>of</strong> 2658<br />
± 27 Ma (large error due to low U;<br />
Brown et al., 2002). The monazite age is<br />
indistinguishable from that obtained<br />
from in situ SHRIMP analyses <strong>of</strong> coexisting<br />
hydrothermal xenotime (2654 ± 8<br />
Ma; Brown et al., 2002).<br />
Dates from the phosphate minerals<br />
in Western Lodes at Cleo are consistent<br />
with available maximum age constraints,<br />
including a SHRIMP U-Pb in<br />
zircon age <strong>of</strong> a rhyodacitic dike that<br />
predates the Western Lodes, an Ar/Ar<br />
plateau age <strong>of</strong> fuchsite from the Sunrise<br />
shear zone which is cut by the Western<br />
Lodes, and a Re-Os molybdenite age from<br />
early quartz-chalcopyrite-molybdenite<br />
veins that pre-date gold in the Western<br />
Lodes (Brown et al., 2002; Fig. 5A). However,<br />
as for most gold deposits<br />
carbonatite<br />
post-gold<br />
2064+/-40<br />
lamprophyre<br />
post-gold<br />
2080+/-4<br />
U/Pb xenotime<br />
U/Pb rutile<br />
Ma<br />
2680 2660 2640 2620 2600 2580 Ma<br />
FIGURE 5. Comparison <strong>of</strong> phosphate 207 Pb/ 206 Pb<br />
SHRIMP ages for gold mineralization with other available<br />
timing constraints in (A) the Laverton region and<br />
(B) the Kambalda region in the eastern Yilgarn craton,<br />
Western Australia (data from Brown et al., 2002;<br />
Nyugen, 1997, and references therein).<br />
A<br />
B<br />
in the Yilgarn craton, the minimum<br />
age <strong>of</strong> mineralization<br />
at Cleo is poorly constrained.<br />
In the Kambalda region,<br />
hydrothermal monazite is<br />
described in gold-bearing,<br />
quartz-pyrite veins in mafic<br />
rocks containing dioritic xenoliths<br />
at Revenge. The veins are<br />
interpreted to be the result <strong>of</strong><br />
fault-valve action with brittle<br />
shear failure in, and extension<br />
failure adjacent to, a conjugate<br />
set <strong>of</strong> shear zones<br />
(Nguyen, 1997). Gold-related<br />
alteration and mineralization<br />
is similar to that observed in<br />
the neighbouring Victory-<br />
Defiance deposit, and is interpreted<br />
to have formed at<br />
about 400°C. Hydrothermal<br />
monazite from high-grade<br />
quartz veins is typically undeformed,<br />
unzoned, and clear,<br />
with multiple randomly oriented<br />
inclusions (pyrite,<br />
quartz, feldspar, and chalcopyrite).<br />
Rare older monazite<br />
is distinct in its dark coloration<br />
and is variably zoned<br />
and deformed. SHRIMP analyses<br />
<strong>of</strong> hydrothermal monazite<br />
206 238<br />
Pb / U<br />
0.58<br />
0.54<br />
0.50<br />
0.46<br />
Hydrothermal Monazite<br />
Revenge Gold Deposit<br />
Western Australia<br />
2500<br />
2600<br />
2700<br />
10 11 12 13 14<br />
207 235<br />
Pb /<br />
2750<br />
Weighted mean = 2631 ± 9 Ma (2 σ)<br />
n = 10; MSWD = 0.6<br />
FIGURE 6. Concordia plot showing ion<br />
microprobe U-Pb data (with 1 σ errors) for<br />
hydrothermal monazite from a gold-bearing<br />
quartz-pyrite vein at the Revenge gold<br />
deposit, Western Australia (data selected<br />
from Nguyen, 1997).<br />
yield a weighted mean 207 Pb/ 206 Pb age<br />
<strong>of</strong> 2631 ± 9 Ma (95% confidence level;<br />
Fig. 6), which is within error <strong>of</strong> the TIMS<br />
age <strong>of</strong> hydrothermal rutile from the<br />
nearby Victory gold deposit (Clarke<br />
et al., 1990), and is younger than the<br />
youngest dated pre-ore rock in the<br />
region (Figure 5B).<br />
Prior to the hydrothermal phosphate<br />
dates from Cleo and Revenge, estimates<br />
for the age <strong>of</strong> gold mineralization in the<br />
Yilgarn were not sufficiently accurate or<br />
precise to allow regional comparison <strong>of</strong><br />
the timing <strong>of</strong> gold mineralization.<br />
Diachronous orogenic gold mineralization<br />
over approximately 40–60 m.y. has<br />
been proposed by Yeats et al. (1999).<br />
The new phosphate age data support<br />
the notion that the main stage <strong>of</strong> orogenic<br />
gold mineralization was<br />
diachronous, but over a much shorter<br />
time period (
14 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 13<br />
Hydrothermal Monazite and Xenotime Geochronology (Continued)<br />
depositional age (1863 ± 7 Ma) <strong>of</strong> the<br />
host graywacke. Older detrital zircons<br />
were also recorded. Another group <strong>of</strong><br />
concordant zircon analyses was interpreted<br />
to be <strong>of</strong> hydrothermal grains,<br />
because their mean 207 Pb/ 206 Pb age <strong>of</strong><br />
1817 ± 16 Ma is similar as that<br />
obtained from monazite and xenotime<br />
grains (1810 ± 10 Ma). Interestingly, the<br />
monazite analysed by Compston and<br />
Matthai (1994) has a wide range <strong>of</strong><br />
both U concentrations (350 ppm to over<br />
2,500 ppm) and individual ages, which<br />
include older (~1900 Ma) and younger<br />
(1831–1624 Ma) analyses (see discussion<br />
in Şener et al., in press). Despite<br />
this variability, and in the absence <strong>of</strong><br />
petrographic control, all phosphate<br />
grains were interpreted by the authors<br />
to belong to the same generation and to<br />
be related to gold mineralization. The<br />
similarity <strong>of</strong> the dates <strong>of</strong> the interpreted<br />
hydrothermal zircon, monazite, and<br />
xenotime with that <strong>of</strong> the Cullen<br />
Batholith (1835 Ma to 1800 Ma; Stuart-<br />
Smith et al., 1993) was used to support<br />
the genetic relationship between gold<br />
mineralization and felsic magmatism.<br />
More recent dating <strong>of</strong> hydrothermal<br />
monazite (Şener et al., in press) does not<br />
support the results obtained by<br />
Compston and Matthai (1994).<br />
Monazite associated with pyrite and<br />
gold in a quartz vein (Fig. 3B) from the<br />
Goodall gold deposit was analysed in<br />
situ. The Goodall monazite grains are<br />
generally low in U (110–730 ppm), and<br />
the mean 207 Pb/ 206 Pb age <strong>of</strong> ca. 1.75<br />
Ga, despite a large uncertainty (±40 Ma<br />
due to the low U contents), indicates<br />
that gold mineralization postdates the<br />
Cullen batholith. In the light <strong>of</strong> these<br />
recent results, Şener et al. (in press) suggest<br />
that the phosphate grains analysed<br />
by Compston and Matthai (1994) could<br />
have included older contact-metamorphic<br />
grains that were incorporated into<br />
the vein during its formation. Contactmetamorphic<br />
monazite and xenotime<br />
from this area have been analyzed by<br />
SHRIMP and have similar mean<br />
207Pb/ 206 Pb ages (1833–1814 Ma;<br />
Rasmussen et al., 2001) to that<br />
obtained by Compston and Matthai<br />
(1994).<br />
Ghana<br />
Gold in Ghana is produced from either<br />
paleoplacer (e.g., Tarkwa) or orogenic<br />
gold deposits, including the giant<br />
Obuasi deposit (e.g., Oberthür et al.,<br />
1994; Allibone et al., 2002). Initially, it<br />
was suggested that the paleoplacer deposits<br />
were produced from weathering<br />
and erosion <strong>of</strong> the lode gold deposits<br />
(e.g., Kesse, 1985). However, detailed<br />
structural and geochronological studies<br />
negate this (e.g., Allibone et al., 2002).<br />
At the Damang gold deposit, epigenetic,<br />
orogenic-style gold mineralization<br />
clearly overprints low-grade paleoplacer<br />
hematite-magnetite gold occurrences in<br />
Tarkwaian-age conglomerates (Pigois et<br />
al., in press). Hydrothermal xenotime<br />
(Fig. 1E) intergrown with hydrothermal<br />
biotite and Fe carbonate in alteration<br />
halos around auriferous quartz veins in<br />
both conglomerate and basalt has been<br />
dated using SHRIMP. The xenotime date<br />
(2063 ± 9 Ma; Pigois et al., in press) provides<br />
the first precise age constraint for<br />
orogenic gold in Tarkwaian rocks.<br />
IMPLICATIONS FOR EXPLORATION<br />
Monazite and xenotime have been<br />
shown to provide robust, precise geochronometers<br />
applicable to the dating<br />
<strong>of</strong> orogenic gold deposits. Understanding<br />
the temporal framework for ore-systems<br />
contributes significantly to genetic and<br />
exploration models, and provides a<br />
sound basis for comparative studies<br />
between different ore systems. A precise<br />
age for any mineralization event also<br />
provides a means for direct correlation<br />
with the local and regional geological<br />
and tectonic history. It can form a basis<br />
for identification <strong>of</strong> critical associations<br />
that can be used in exploration programs<br />
at all scales, and the prospectivity<br />
<strong>of</strong> terranes, rock sequences, and<br />
structures <strong>of</strong> different ages can be better<br />
assessed. For example, a consequence <strong>of</strong><br />
the lack <strong>of</strong> temporal relationship<br />
between gold mineralization and felsic<br />
magmatism in the Pine Creek orogen<br />
(Şener et al., in press) is that exploration<br />
should not be restricted to contact<br />
aureoles <strong>of</strong> granites such as the<br />
Cullen batholith. In other cases, confirmation<br />
<strong>of</strong> a temporal relationship<br />
between mineralization and a particular<br />
suite <strong>of</strong> granitoids might provide a<br />
critical exploration indicator.<br />
Chemical classification <strong>of</strong> phosphate<br />
minerals can also allow correlation <strong>of</strong><br />
xenotime <strong>of</strong> different ages with different<br />
events within the same area. As such,<br />
there is the potential for unravelling,<br />
both temporally and genetically, complex<br />
multistage deposits.<br />
CONCLUSION<br />
Hydrothermal monazite and xenotime<br />
are common accessory minerals in<br />
orogenic gold deposits formed under a<br />
range <strong>of</strong> temperatures and pressures,<br />
and are commonly intimately associated<br />
with ore or ore-related alteration<br />
minerals. In many places monazite and<br />
xenotime coexist, thus allowing for a<br />
multimineral approach to dating <strong>of</strong><br />
mineralization. Such an approach can<br />
confirm the isotopic robustness <strong>of</strong> either<br />
phase, and provide extra confidence in<br />
the final calculated date. Phosphate<br />
dating complements existing<br />
geochronometers and adds an important<br />
and common mineral group to the<br />
list <strong>of</strong> datable minerals currently used<br />
to constrain the timing <strong>of</strong> ore formation<br />
in a variety <strong>of</strong> settings.<br />
ACKNOWLEDGMENTS<br />
The authors thank S.M. Brown, G.C.<br />
Dawson, G.L. England, C. Grainger, N.<br />
Kositcin, J-P. Pigois, K.C.J. Pires, B.P.<br />
Salier, A.K. Şener, F.H.B. Tallarico, and<br />
D.A. Vallini for access to results prior to<br />
publication. Staff <strong>of</strong> the CMM at UWA,<br />
Marion Marshall, AMIRA and ARC support<br />
is acknowledged. The manuscript<br />
benefited from detailed and constructive<br />
comments by J.K. Mortensen, J.<br />
Richards, R. Vielreicher, N. White, and<br />
an anonymous reviewer.<br />
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to page<br />
B., 2001, Dating<br />
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Hydrothermal Monazite and Xenotime Geochronology (Continued)<br />
low-grade metamorphic events by SHRIMP<br />
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WEEGE, RANDALL J., USA<br />
WOODCOCK, JOHN, CANADA<br />
WOODTLI, ROBERT,<br />
SWITZERLAND<br />
YUI, SHUNZO, JAPAN<br />
<strong>SEG</strong> NEWS<br />
B. Gerhard Els<br />
Placer sedimentologist<br />
➢ Sedimentological syntheses<br />
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P.O. Box 20962<br />
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2522 Telephone and fax:<br />
South Africa +27 18 294<strong>45</strong>33<br />
PAID ADVERTISEMENT<br />
PAID ADVERTISEMENT
18 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
<strong>SEG</strong> NEWS<br />
2002 Thayer Lindsley Lecturer Tour<br />
I appreciate the opportunity that the<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> provided for<br />
me to travel to 12 sites in the United States,<br />
Canada, and Mexico to make research presentations<br />
as the 2002 Thayer Lindsley<br />
Lecturer. In view <strong>of</strong> the <strong>Society</strong>’s emphasis<br />
on supporting student chapters, presentations<br />
were designed to be <strong>of</strong> particular<br />
interest to university audiences, although<br />
presentations were also made to pr<strong>of</strong>essional<br />
groups at mine and other mineral<br />
industry sites.<br />
I made 17 presentations, roughly<br />
divided between “The <strong>Economic</strong> Geology <strong>of</strong><br />
Microbes: Relation between Mineral<br />
Resources and Bacterial Processes” and<br />
“The Giant Pliocene Porphyry-skarn<br />
Copper-gold Deposits, Ertsberg District,<br />
Papua, Indonesia: Exploration, Production,<br />
and Research in a Challenging<br />
Environment.” A third talk on “The Rise<br />
and Fall <strong>of</strong> an Industrial Minerals Giant: A<br />
Century <strong>of</strong> Fire and Brimstone” was not<br />
presented on the tour.<br />
The tour was intended to be in the<br />
spring and was initiated by an Ertsberg district<br />
lecture to the Grupo Mexico geology<br />
staff and the field trip participants at<br />
Cananea in conjunction with the porphyry<br />
copper field course following the Global<br />
Exploration Meeting. Thanks to Ramón<br />
Ayala and staff for their hospitality and to<br />
Bill Chávez and Spence Titley for <strong>of</strong>fering<br />
this popular field course once again. The<br />
other invitations to speak were delayed<br />
until the fall when they were organized<br />
into a series <strong>of</strong> week-long tours in the<br />
United States and Canada, separated by<br />
periods in Austin to allow me to handle the<br />
obligations <strong>of</strong> my day job.<br />
The “microbes and ores” talk focused on<br />
the role <strong>of</strong> bacterial processes in the development<br />
<strong>of</strong> mineral resources in sedimentary<br />
basins, particularly as related to sulfur supply<br />
for metallic and industrial minerals.<br />
The role <strong>of</strong> microbes in mineral precipitation<br />
is a popular topic, but the development<br />
<strong>of</strong> commercial-scale orebodies requires<br />
assessment <strong>of</strong> additional issues beyond laboratory<br />
or short-term studies <strong>of</strong> modern<br />
microbial systems. The multimedia presentation<br />
built on mineralization systems in<br />
young sedimentary basins where diverse<br />
bacterial effects can be convincingly established,<br />
progressively moving into older and<br />
more economically significant ore systems.<br />
The presentation addressed the enigma <strong>of</strong><br />
the low-temperature restrictions for effective<br />
microbial production vs. other lines <strong>of</strong> evidence<br />
for higher temperatures for the oreforming<br />
fluids.<br />
The Ertsberg talk presented an overview<br />
<strong>of</strong> the physical and social issues related to<br />
exploration for and development <strong>of</strong> one <strong>of</strong><br />
the world’s great ore concentrations, as an<br />
example <strong>of</strong> the challenges with which the<br />
mining industry deals. The review commenced<br />
with the 1936 expedition led by J.<br />
J. Dozy and the discovery <strong>of</strong> the Ertsberg<br />
skarn deposit, progressed to the commitment<br />
<strong>of</strong> Freeport in the late 1960s to<br />
develop this remote district, and the discovery<br />
and fast-track development <strong>of</strong> the<br />
remarkable Grasberg Cu-Au orebody starting<br />
in 1988. Freeport-McMoRan has provided<br />
an exceptional opportunity for<br />
University <strong>of</strong> Texas pr<strong>of</strong>essors, research scientists,<br />
and graduate students to investigate<br />
diverse geologic aspects <strong>of</strong> this little<br />
known region. Among research aspects <strong>of</strong><br />
the presentation, a popular segment<br />
included a quicktime movie <strong>of</strong> a high resolution<br />
X-ray computed tomography study<br />
<strong>of</strong> the 3-D distribution <strong>of</strong> Au grains in<br />
Grasberg ore (now available on-line at<br />
).<br />
The first autumn tour was to Tennessee<br />
where I visited with long-time associates at<br />
the University <strong>of</strong> Tennessee at Knoxville at<br />
the invitation <strong>of</strong> Kula Misra. Then to<br />
Cookeville to address an undergraduate<br />
group with mineral resources interests, at<br />
the invitation <strong>of</strong> Wayne Leimer at<br />
Tennessee Tech, followed by a discussion<br />
about graduate schools and employment<br />
opportunities in the resource industries. In<br />
between, Steve Bruton and Pasmnico generously<br />
provided a personalized tour <strong>of</strong> the<br />
Gordonsville mine, the keystone <strong>of</strong> the central<br />
Tennessee zinc district, where I began<br />
my career focus on mineral resources in<br />
sedimentary basins.<br />
The next tour was to eastern Canada,<br />
starting with a talk at Université Laval in<br />
Quebec City at the invitation <strong>of</strong> the newly<br />
formed <strong>SEG</strong> student chapter, where I was<br />
generously hosted by Patrick Mercier-<br />
Langevin and Valérie Bécu. This visit also<br />
provided the opportunity to learn about<br />
recent exploration and research activities<br />
in the eastern Shield provided by the students,<br />
Georges Beaudoin and Benoît Dubé.<br />
Moving westward, I next visited Carleton<br />
University in Ottawa at the invitation <strong>of</strong><br />
George Dix, then on to the University <strong>of</strong><br />
Toronto at the invitation <strong>of</strong> Yannick<br />
Beaudoin and Andrew Conly <strong>of</strong> the <strong>SEG</strong><br />
student chapter. This stop provided a<br />
chance to visit with Ed Spooner and Steve<br />
Scott about their latest research activities,<br />
as well as the opportunity for a lively<br />
discussion with<br />
Grant Ferris and his<br />
research group on<br />
diverse microbial<br />
issues in geological<br />
processes. The last<br />
stop was at the<br />
University <strong>of</strong><br />
Western Ontario at<br />
the invitation <strong>of</strong><br />
Erika Greiner and<br />
the <strong>SEG</strong> student<br />
chapter where I<br />
J. RICHARD KYLE<br />
<strong>SEG</strong> 1983 F<br />
Jackson School <strong>of</strong><br />
Geosciences,<br />
The University <strong>of</strong><br />
Texas at Austin<br />
presented both talks back to back. It was<br />
good to see Bob Hodder and Norm Duke on<br />
my first visit to London in two decades.<br />
The next trip vector was northwesterly,<br />
starting at Oregon State at the invitation <strong>of</strong><br />
John Dilles and Mark Reed. Then on to<br />
Vancouver at the request <strong>of</strong> Dick Tosdal at<br />
the Mineral Deposits Research Unit <strong>of</strong> the<br />
University <strong>of</strong> British Columbia. Dick<br />
arranged the Ertsberg talk for a downtown<br />
venue to accommodate the exploration<br />
community, followed by the microbes and<br />
ores talk at the university. Then across the<br />
mountains to Edmonton for both talks at<br />
the University <strong>of</strong> Alberta hosted by Jeremy<br />
Richards and Sarah Gleeson. This<br />
extended visit allowed opportunity for discussions<br />
with Jeremy on Grasberg – Porgera<br />
issues and with Sarah on sedimentary<br />
basin ore genesis.<br />
With my travel budget ebbing away, my<br />
last trip was to New Mexico Tech and the<br />
University <strong>of</strong> Utah, at the invitation <strong>of</strong> my<br />
international field trip cohorts, Bill Chávez<br />
and Erich Petersen, respectively. Both<br />
locales requested by both talks, the least I<br />
could do in appreciation for many past<br />
favors provided by Bill and Erich for my<br />
students and me. <strong>SEG</strong> chapter students and<br />
faculty once again provided exceptional<br />
hospitality and the opportunity to learn<br />
about current research.<br />
The Thayer Lindsley lecture tour went<br />
by quickly, affording me a chance to visit a<br />
lot <strong>of</strong> friends I had not seen recently and to<br />
learn about exciting research being done in<br />
mineral resources geology at many universities.<br />
It also provided the opportunity to<br />
promote <strong>SEG</strong> to general student groups and<br />
to other non-members, including providing<br />
membership information and the <strong>SEG</strong><br />
Newsletter. Thanks to everyone, and especially<br />
the <strong>SEG</strong> student chapters, who provided<br />
exceptional hospitality during the<br />
tour. Thanks to <strong>SEG</strong> for the honor <strong>of</strong> making<br />
these presentations on applied ore<br />
deposits geology research in memory <strong>of</strong><br />
Thayer Lindsley. 1
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 19<br />
<strong>SEG</strong>’s Centenarian<br />
Editor’s note: On September 14, 2002, <strong>SEG</strong>’s eldest member, Adolf Helke,<br />
celebrated his 100 th birthday. We asked Dr. Helke to write up a short biography<br />
with the highlights <strong>of</strong> his career so that we could share them with Newsletter readers.<br />
Below is the text he sent along for inclusion.<br />
I was born on September 14, 1902, in<br />
the village <strong>of</strong> Hochweitzschen in<br />
Saxony, Germany. I studied at the<br />
School <strong>of</strong> Mines (Bergakademie)<br />
Freiberg. From the outset I was more<br />
interested in mineralogy and economic<br />
geology than in problems <strong>of</strong> mining<br />
engineering. For my 1930 diploma I<br />
submitted a thesis on a fluviative gold<br />
placer underground in Karst caves in<br />
the Taurus Mountains near Ulukisla,<br />
southern Turkey.<br />
Beginning in 1930, I studied the<br />
epithermal gold deposits near Stanija,<br />
in the Apuseni Mountains <strong>of</strong> Rumania,<br />
and defended my doctoral dissertation<br />
on this subject on March 12, 1932, at<br />
the School <strong>of</strong> Mines in Freiberg. Later, I<br />
extended the scope <strong>of</strong> my interest to all<br />
ore deposits <strong>of</strong> the Carpathian arc ranging<br />
through Slovakia and Romania.<br />
The results <strong>of</strong> this work are published in<br />
a book entitled “Die jungvulkanischen<br />
Gold-Silbererzlagerstätten des<br />
Karpathenbogens, unter besonderer<br />
Berücksichtigung der Genesis und<br />
Paragenesis des gediegenen Goldes” –<br />
Archiv für Lagerstättenforschung, Heft<br />
66. (herausgegeben von der Preuß.<br />
Geolog. Landesanstalt, Berlin 1938)<br />
In 1937 and 1938, I worked for the<br />
Geological Survey (Maden Tetkik ve<br />
Arama Enstitüsü) in Ankara. On their<br />
behalf I studied the chromite deposits<br />
near Guleman. In order to include all<br />
the different types <strong>of</strong> chromite deposits,<br />
I called the Guleman district “Die osttürkische<br />
Chromitporvinz.” I also studied<br />
the well-known copper deposit,<br />
Ergani Maden, in the valley <strong>of</strong> the<br />
Tigris, as well as better known ore<br />
deposits in the eastern part <strong>of</strong> Turkey.<br />
During the academic year 1938-<br />
1939, I had a postdoctoral fellowship<br />
at the Johns Hopkins University in<br />
Baltimore, Maryland. Following this, I<br />
undertook a trip to visit all active ore<br />
deposits in the western United States,<br />
from the Canadian to the Mexican<br />
borders.<br />
Unsettled by<br />
the outbreak <strong>of</strong><br />
hostilities in<br />
Europe, I returned<br />
to my home country<br />
early in 1941<br />
via Japan and<br />
Siberia. I returned<br />
to the School <strong>of</strong><br />
ADOLF HELKE<br />
<strong>SEG</strong> 1939 SF<br />
Mines in Freiberg. However, in the late<br />
summer <strong>of</strong> 1941, I was drafted into the<br />
army as a military geologist<br />
(Wehrgeologe). In this capacity I saw<br />
four years <strong>of</strong> war and two years as a<br />
prisoner <strong>of</strong> war.<br />
In 1949 I again went to Turkey,<br />
where I taught mineralogy and geology<br />
at the Mining College (Teknik Okul) in<br />
Zonguldak. In 1955 I received an<br />
appointment as instructor in mineralogy<br />
and petrography at the University<br />
<strong>of</strong> Mainz, Germany. In 1962, I was<br />
appointed to the rank <strong>of</strong> pr<strong>of</strong>essor. I<br />
continued in this function until I<br />
reached the age <strong>of</strong> 92. 1<br />
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PAID ADVERTISEMENT
20 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
<strong>SEG</strong> STUDENT CHAPTER NEWS<br />
<strong>SEG</strong> NEWS<br />
<br />
LAURENTIAN UNIVERSITY<br />
<br />
SECONDARY TEACHER<br />
WORKSHOP A SUCCESS<br />
The Student Chapter <strong>of</strong> <strong>SEG</strong> and the Laurentian<br />
University Department <strong>of</strong> Earth Sciences (LU-DES)<br />
contacted the Rainbow district school board about<br />
the possibility <strong>of</strong> running a geoscience education<br />
workshop for interested secondary school teachers.<br />
The workshop was held on the afternoon <strong>of</strong> January<br />
9, with teachers from 12 secondary school geography<br />
departments and two administrators in attendance.<br />
Laurentian earth science department staff,<br />
Ontario Geological Survey representatives, and student<br />
chapter members gave presentations. Many<br />
teachers made positive comments and expressed<br />
interest in having further interaction between the<br />
high schools and the university. In fact, the administrators<br />
spread the word to other school departments,<br />
and now teachers in other disciplines are<br />
pursuing opportunities for various university<br />
departments to hold similar workshops.<br />
For complete text, go to the website:<br />
http://www.segweb.org/SCReport-LUWorkshop.pdf<br />
<br />
UNIVERSITY OF TORONTO<br />
<br />
The chapter held a diamond workshop with<br />
Pr<strong>of</strong>essors Daniel Schulze (University <strong>of</strong> Toronto)<br />
and Herb Helmstaedt (Queen’s University) giving<br />
hands-on opportunity for petrographic examination<br />
<strong>of</strong> various host rocks and diamonds. The collection<br />
included samples from well known diamond districts.<br />
Fifteen industry participants and three students<br />
(a free-for-students workshop was presented<br />
earlier in January) attended. The workshop complemented<br />
a lecture-based course given at the<br />
Prospectors and Developers Conference (PDAC) the<br />
following day.<br />
Participants <strong>of</strong> the 2003 chapter short course on diamond exploration.
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 21<br />
<strong>Economic</strong> Geology — An Invited Commentary on Journal Papers<br />
Donald F. Sangster (<strong>SEG</strong> 1973 F)<br />
The Carbonate-hosted Lisheen Zn-Pb-Ag Deposit,<br />
County Tipperary, Ireland<br />
(M. W. Hitzman (<strong>SEG</strong> 1978 F), P. B. Redmond (<strong>SEG</strong> 1997 S), and D. W. Beaty (<strong>SEG</strong> 1986 F)<br />
The Lower Carboniferous carbonate<br />
rocks <strong>of</strong> Ireland host one <strong>of</strong> the world’s<br />
major base metal districts, and this<br />
paper, by Hitzman et al. (<strong>Economic</strong><br />
Geology, v. 97, 2002), is the first comprehensive<br />
description <strong>of</strong> Lisheen, the second-largest<br />
<strong>of</strong> the Irish Zn-Pb deposits<br />
(after Navan). The paper presents new<br />
information and data on the structural<br />
controls <strong>of</strong> mineralization and<br />
hydrothermal alteration, type, and distribution<br />
<strong>of</strong> hydrothermal dolomite, sulfide<br />
petrography and paragenesis,<br />
metal zonation, constraints on age <strong>of</strong><br />
mineralization, and the space-time evolution<br />
<strong>of</strong> the Lisheen mineralizing system.<br />
The authors assert that the Irish<br />
orefield will be important to readers <strong>of</strong><br />
<strong>Economic</strong> Geology because “...<strong>of</strong> the<br />
influence that studies <strong>of</strong> Irish-type<br />
deposits have had on the development<br />
<strong>of</strong> genetic models for sediment-hosted<br />
deposits worldwide...” (Hitzman et al.,<br />
2002, p. 1627–1628).<br />
Although the paper is based mainly<br />
on information derived from drill core<br />
obtained prior to the start <strong>of</strong> underground<br />
operations in 1997, the work is<br />
particularly significant because it presents<br />
important information with<br />
respect to three features: (1) the nature<br />
<strong>of</strong> the process(es) responsible for an<br />
increase in pre-mineralization permeability<br />
<strong>of</strong> host rocks; (2) the spatial and<br />
genetic relationship between structure<br />
and mineralization; and (3) a detailed<br />
description <strong>of</strong> the “black matrix breccia”<br />
(and its postulated origin) which so<br />
closely accompanies mineralization at<br />
Lisheen.<br />
Addressing the first <strong>of</strong> these features,<br />
the authors consider the issue <strong>of</strong><br />
regional dolomitization. In southcentral<br />
Ireland, a Lower Carboniferous<br />
mudbank complex (the Waulsortian<br />
Limestone) has been completely<br />
dolomitized on a regional scale, and<br />
Lisheen lies within the westernmost<br />
margin <strong>of</strong> this zone <strong>of</strong> dolomitization.<br />
With the use <strong>of</strong> an electronic field<br />
permeameter, Hitzman et al. (2002)<br />
present quantitative data illustrating<br />
that the pre-ore regional dolomite possesses<br />
permeability (mean = 0.22 millidarcies)<br />
10 times that <strong>of</strong> undolomitized<br />
Waulsortian limestone (mean = 0.2 millidarcies).<br />
With the use <strong>of</strong> bore-hole<br />
pumps, larger-scale measurements<br />
reflecting fracture permeability show<br />
regional dolomite to be up to 10 2 times<br />
more permeable than the limestone,<br />
although the authors admit much <strong>of</strong><br />
the fracture permeability might be the<br />
result <strong>of</strong> post-ore jointing and fracture<br />
enlargement. Nevertheless, the data are<br />
the first (to this reviewer’s knowledge)<br />
actual permeability measurements <strong>of</strong><br />
regional dolomite in the area. The<br />
authors regard the higher permeability<br />
<strong>of</strong> the dolomitized Waulsortian to be an<br />
important feature that permitted the<br />
ingress <strong>of</strong> mineralizing fluids.<br />
The second feature, the relationship<br />
between faulting and mineralization, is<br />
well illustrated by Hitzman et al. (2002)<br />
and, in this reviewer’s opinion, is the<br />
main strength <strong>of</strong> the paper. The Lisheen<br />
area is dominated by four major eastwest<br />
normal faults, all <strong>of</strong> which are<br />
downfaulted to the north, and which<br />
have displacements <strong>of</strong> up to 220 m.<br />
Zones between these major faults are<br />
broken by normal east-west and northsouth<br />
faults with significantly less displacement.<br />
The spatial relationships<br />
between these faults and several mineralization<br />
parameters are well illustrated<br />
by several diagrams. For example, the<br />
thickest and highest grades <strong>of</strong> Zn-Pb<br />
mineralization and most <strong>of</strong> the<br />
hydrothermal alteration occur in the<br />
hanging wall <strong>of</strong> the major faults.<br />
Sulfide thickness, together with iron,<br />
zinc, and lead grades, all increase<br />
toward one or another <strong>of</strong> the major and<br />
minor faults. Moreover, mineralization<br />
associated with normal faulting is not<br />
restricted to the immediate Lisheen<br />
area. A large normal fault controls<br />
location <strong>of</strong> the G orebody at Galmoy,<br />
6 km northeast <strong>of</strong> Lisheen, and similar<br />
normal faults occur 20 km farther to<br />
the northeast at the subeconomic<br />
Derrykearn deposit. In the opposite<br />
direction, 10 km southwest <strong>of</strong> Lisheen,<br />
another normal fault system is associated<br />
with hydrothermal dolomitization<br />
similar to that at Lisheen. These observations,<br />
taken together, indicate that<br />
the Lisheen fault system is part <strong>of</strong> a<br />
larger northeast-trending system ~40<br />
km in length. The authors suggest the<br />
faulting was controlled by reactivation<br />
<strong>of</strong> northeast-trending Caledonian basement<br />
structures. Evidence is presented to<br />
support the concept that the faulting<br />
was synsedimentary in nature, beginning<br />
in the late Courceyan and continuing<br />
into the Chadian, and that most <strong>of</strong><br />
the displacement took place prior to<br />
mineralization.<br />
The third mineralization parameter<br />
is wall-rock alteration as exemplified by<br />
the “black matrix breccia” which is<br />
probably the most distinctive feature <strong>of</strong><br />
the Lisheen deposit. The significance <strong>of</strong><br />
the black matrix breccia is that most <strong>of</strong><br />
the ore sulfides are in direct contact<br />
with it, usually within the boundaries <strong>of</strong><br />
the essentially concordant breccia bodies.<br />
In the discussion <strong>of</strong> genesis, the<br />
authors contend that hydrothermal fluids<br />
produced both the “dolomitematrix”<br />
breccia and sulfides. The black<br />
matrix breccia is suggested to have<br />
formed by wall-rock replacement and<br />
precipitation in open spaces <strong>of</strong> black<br />
dolomite crystals, perhaps triggered by<br />
movements along the Lisheen fault system<br />
and solution collapse.<br />
Alternatively, a debris flow origin for<br />
similar dolomite breccias at the<br />
Silvermines deposit (~30 km west-northwest<br />
<strong>of</strong> Lisheen) was suggested by<br />
Mullane and Kinnaird (1998).<br />
The complexity <strong>of</strong> the various breccias<br />
present in the Irish Pb-Zn deposits<br />
was highlighted recently by Lee and<br />
Wilkinson (2002)<br />
to page<br />
who, on the basis <strong>of</strong> 22 ...<br />
<strong>Economic</strong> Geology Commentary
22 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 21<br />
<strong>Economic</strong> Geology Commentary (Continued)<br />
<strong>Economic</strong> Geology Commentary<br />
observations made primarily on the<br />
subeconomic, and, most importantly,<br />
relatively undolomitized Cooleen zone<br />
(near Silvermines), have recognized five<br />
main breccia types. Their type I polymictic<br />
and roughly concordant breccia is<br />
“...interpreted to have formed through<br />
episodic, fault-controlled synsedimentary<br />
slumping to create debris flows during<br />
formation <strong>of</strong> the Waulsortian mudbanks...”<br />
(Lee and Wilkinson, 2002, p.<br />
659). Their type III breccia is described<br />
as comparable to the black matrix breccia<br />
at Lisheen and is regarded by these<br />
authors as being originally a type I breccia<br />
that has been overprinted and<br />
altered by regional dolomitization and<br />
hydrothermal processes. The conclusions<br />
<strong>of</strong> Lee and Wilkinson (2002) are<br />
challenged by Reed and Wallace (2003)<br />
but are stoutly defended by Wilkinson<br />
and Lee (2003). Obviously there is no<br />
consensus at this time.<br />
Whether the Lisheen BMB is <strong>of</strong><br />
hydrothermal (Hitzman et al., 2003) or<br />
synsedimentary origin (Lee and<br />
Wilkinson, 2002) does not alter the fact<br />
that these bodies are closely associated<br />
with sulfides and, therefore, will continue<br />
to <strong>of</strong>fer exploration targets many<br />
times the size <strong>of</strong> the associated orebodies.<br />
However, if future detailed studies <strong>of</strong><br />
the Lisheen black matrix breccia confirm<br />
the synsedimentary origin <strong>of</strong> these<br />
breccias, the significance <strong>of</strong> the regional<br />
dolomitization and the resulting<br />
increase in permeability to facilitate the<br />
flow <strong>of</strong> hydrothermal fluids will be<br />
reduced. Hydrothermal fluids, instead,<br />
will be seen as favoring the highly permeable<br />
debris flows and forming sulfide<br />
bodies by open-space filling and<br />
replacement <strong>of</strong> these bodies.<br />
Hitzman et al. (2002) conclude that<br />
formation <strong>of</strong> the Lisheen orebody<br />
required the following: (1) the presence<br />
<strong>of</strong> suitable host rocks; (2) an effective<br />
plumbing system; and (3) metalliferous<br />
NOTE:<br />
hydrothermal fluids. The first <strong>of</strong> these,<br />
the regional dolomitization, occurred<br />
no earlier than the Chadian and<br />
resulted in a significant increase in<br />
porosity and permeability. Regional<br />
dolomitization is considered to have<br />
controlled the size and geometry <strong>of</strong> the<br />
Lisheen deposit. The second, synsedimentary<br />
normal faulting during late<br />
Courceyan to Chadian provided the<br />
necessary channels for ingress <strong>of</strong><br />
hydrothermal fluids. Although the<br />
nature <strong>of</strong> the hydrothermal fluids is not<br />
fully clear, they appear to have been<br />
somewhat acidic, and caused initial formation<br />
<strong>of</strong> the Lisheen breccias followed<br />
by sulfide precipitation. Mineralization<br />
is estimated to have occurred “...at least<br />
10 m.y. after deposition <strong>of</strong> the<br />
Waulsortian complex host rocks”<br />
(Hitzman et al., 2002, p. 1653).<br />
One final note deserves attention:<br />
Hitzman et al. (2003) allude to the difficulty<br />
in correlating radiometric dates<br />
and stratigraphic ages in the<br />
Carboniferous time scale, and three different<br />
time scales proposed by George et<br />
al. (1976), Haq and van Eysinga (1998),<br />
and Okulitch (1999), vary by up to 10<br />
m.y. in the absolute positioning <strong>of</strong> the<br />
various stratigraphic boundaries. These<br />
uncertainties have led to some confusion<br />
in the literature over the timing <strong>of</strong><br />
mineralization in the Irish Zn-Pb<br />
deposits (e.g., Lee and Wilkinson, 2002;<br />
Boyce et al., 2003). It is suggested that<br />
improved absolute age definition <strong>of</strong> this<br />
part <strong>of</strong> the Carboniferous time scale<br />
would help resolve some <strong>of</strong> the outstanding<br />
controversies regarding these<br />
important base metal deposits.<br />
REFERENCES<br />
Boyce, A.J., Little, C.T.S., and Russell, M.J.,<br />
2003, A new fossil vent biota in the<br />
Ballynoe barite deposit, Silvermines,<br />
Ireland: Evidence for intracratonic sea-floor<br />
hydrothermal activity ~352 Ma: <strong>Economic</strong><br />
Geology, v. 98, in press.<br />
George, T.N., Johnson, G.A.L., Mitchell, M.,<br />
Prentice, J.E., Ramsbottom, W.H.C.,<br />
Sevastopulo, G.D., and Wilson, R.B., 1976,<br />
A correlation <strong>of</strong> Dinantian rocks in the<br />
British Isles: Geological <strong>Society</strong> <strong>of</strong> London<br />
Special Reports 7, 87 p.<br />
Haq, B.U. and van Eysinga, F.W.B., 1998,<br />
Geological time scale—fifth edition:<br />
Amsterdam, Elsevier Science.<br />
Hitzman, M.W., Redmond, P.B., and Beaty,<br />
D.W., 2002, The carbonate-hosted Lisheen<br />
Zn-Pb-Ag deposit, County Tipperary,<br />
Ireland: <strong>Economic</strong> Geology, v. 97, p.<br />
1627–1655.<br />
Lee, M.J. and Wilkinson, J.J., 2002,<br />
Cementation, hydrothermal alteration,<br />
and Zn-Pb mineralization <strong>of</strong> carbonate<br />
breccias in the Irish Midlands: Textural evidence<br />
from the Cooleen zone, near<br />
Silvermines, County Tipperary: <strong>Economic</strong><br />
Geology, v.97, p. 653–662.<br />
Mullane, M.M. and Kinnaird, J.A., 1998,<br />
Synsedimentary mineralization at the<br />
Ballynoe barite deposit, near Silvermines,<br />
Co. Tipperary, Ireland: Transactions <strong>of</strong> the<br />
Institute <strong>of</strong> Mining and Metallurgy, v.107,<br />
p. B48–61.<br />
Okulitch, A.V., 1999, Geological time scale,<br />
1999: Geological Survey <strong>of</strong> Canada Open<br />
File 3040, National Earth Sciences Series,<br />
Geological Atlas.<br />
Reed, C. and Wallace, M., 2003,<br />
Cementation, hydrothermal alteration,<br />
and Zn-Pb mineralization <strong>of</strong> carbonate<br />
breccias in the Irish Midlands: textural evidence<br />
from the Cooleen zone, near<br />
Silvermines, County Tipperary—a discussion:<br />
<strong>Economic</strong> Geology, v. 98, 191–193.<br />
Wilkinson, J.J. and Lee, M.J., 2003,<br />
Cementation, hydrothermal alteration,<br />
and Zn-Pb mineralization <strong>of</strong> carbonate<br />
breccias in the Irish Midlands: textural evidence<br />
from the Cooleen zone, near<br />
Silvermines, County Tipperary—a reply;<br />
<strong>Economic</strong> Geology, v. 98, 194–198. 1<br />
Commentary that appears in this column is<br />
solicited by the technical editor.<br />
Dr. Sangster retired from the Geological<br />
Survey <strong>of</strong> Canada in 1997; he is a past<br />
President <strong>of</strong> <strong>SEG</strong>.<br />
All <strong>SEG</strong> members take note <strong>of</strong> their membership<br />
numbers on the mailing label <strong>of</strong> the Newsletter<br />
for access to the <strong>SEG</strong> on-line <strong>of</strong>ferings!
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 23<br />
EXPLORATION REVIEWS<br />
ALASKA<br />
Regional Correspondent: Curtis J. Freeman<br />
(<strong>SEG</strong> 1996)<br />
Avalon Development Corp.<br />
P.O. Box 80268<br />
Fairbanks, AK 99708<br />
Tel. +907.<strong>45</strong>7.5159 Fax +907.<strong>45</strong>5.8069<br />
E-mail: avalon@alaska.net<br />
Website: www.avalonalaska.com<br />
Despite the drop in gold prices since<br />
they peaked a month ago, exploration<br />
activities in Alaska are picking up.<br />
Contracts for drilling rigs, helicopters<br />
and experienced geologists are being<br />
finalized at a rate not seen here in half<br />
a decade. In addition, Alaska’s new<br />
political administration is aggressively<br />
encouraging infrastructure development<br />
and making regulatory improvements<br />
to help Alaska’s mineral industry<br />
grow. Alaska’s total mineral industry<br />
value topped the $1 billion level for the<br />
sixth straight year in 2002. Production<br />
value was $968.2 million, development<br />
value was $33.5 million and exploration<br />
value was $25.0 million, bringing<br />
the year-end mineral value to<br />
$1,026,700,000. With gold and platinum<br />
prices now at 7 and 20 year highs<br />
and with silver and nickel prices up significantly,<br />
the industry is looking to<br />
2003 as a turn-around year.<br />
WESTERN ALASKA<br />
Teck Cominco American announced<br />
fourth quarter and year-end 2002<br />
results from its Red Dog mine. In the<br />
fourth quarter, the mine produced<br />
157,300 tonnes (t) <strong>of</strong> zinc in concentrate<br />
and for the year the mine produced<br />
578,400 t <strong>of</strong> zinc in concentrate. Zinc<br />
ore grade and mill recoveries increased<br />
significantly to 21.6% and 84.5% from<br />
19.8% and 78.9%, respectively, in the<br />
year previous quarter. The mine posted<br />
a $10 million operating loss for the<br />
quarter and a $28 million operating<br />
loss for the year, thanks in large part to<br />
continued low zinc prices which averaged<br />
$0.35 per pound.<br />
The eagerly awaited decision finally<br />
came and in the end surprised nobody.<br />
NovaGold Resources announced that<br />
Placer Dome has elected to increase its<br />
interest in the 27.8-oz Donlin Creek<br />
gold project by 40% (to 70%). In order<br />
to acquire this additional interest<br />
Placer Dome must expend $30 million<br />
on project development, complete a feasibility<br />
study and make a decision to<br />
construct a mine that produces at least<br />
600,000 oz <strong>of</strong> gold per year, all this by<br />
November 13, 2007. NovaGold would<br />
not be required to contribute additional<br />
funding until after the fist $30 million is<br />
spent and may elect to have Placer<br />
Dome arrange financings for Nova<br />
Gold costs related to mine construction.<br />
The companies are on-track to complete<br />
a revised resource estimate based on all<br />
<strong>of</strong> the drilling completed in the last year<br />
and to develop plans to address the project’s<br />
power and access needs.<br />
TNR Resources reported on final<br />
drilling results from its Rock Creek gold<br />
project under option from NovaGold<br />
Resources in the Nome district. Drill<br />
highlights include hole 101 with 34 m<br />
grading 1.61 gpt gold, including 2 m at<br />
17.09 gpt gold, hole 102 with 61 m<br />
grading 1.50 gpt gold, including 4 m at<br />
5.12 gpt gold, hole 105 with 88 m grading<br />
1.27 gpt gold, hole 115 with 8 m<br />
grading 3.55 gpt gold and 12 m grading<br />
4.03 gpt gold, and hole 116 with 116.3<br />
m grading 1.73 gpt gold, including 16<br />
m grading 3.05 gpt gold and a separate<br />
interval <strong>of</strong> 28 m grading 4.60 gpt gold.<br />
The companies are planning to complete<br />
a comprehensive independent preliminary<br />
economic assessment study<br />
and to calculate updated gold resources<br />
on the project by June <strong>of</strong> 2003.<br />
EASTERN INTERIOR<br />
Kinross Gold reported a successful year<br />
<strong>of</strong> exploration at its Fort Knox mine in<br />
the Fairbanks district in 2002. The company<br />
indicated that it recovered<br />
410,520 oz <strong>of</strong> gold at a cash cost <strong>of</strong><br />
$232/oz and added 623,000 oz to new<br />
reserves as a consequence <strong>of</strong> renewed<br />
exploration drilling and revised engineering/mining<br />
techniques. In 2002<br />
the operation mined 19.1 tons <strong>of</strong> material<br />
using a staff <strong>of</strong> 388 people, an<br />
activity that is expected to rise in 2003<br />
to 33.5 Mt mined with a staff <strong>of</strong> 425<br />
people. Projected production for 2003<br />
from the combined Fort Knox and True<br />
North open pits is 408,000 oz Au.<br />
Exploration spending by the company<br />
also is expected to increase in 2003 to<br />
$3.5 million.<br />
Teryl Resources (20%) and Kinross<br />
Gold (80%) announced preliminary<br />
results from the 2002 drilling and<br />
trenching program on their Gil project<br />
in the Fairbanks district. Although<br />
additional results are still pending, a<br />
new zone <strong>of</strong> mineralization was discovered<br />
at the Sourdough Ridge prospect<br />
where drilling intercepted 15 ft grading<br />
0.49 oz Au/t (16.80 g Au/t) including a<br />
5-ft section grading 1.34 oz Au/t (<strong>45</strong>.94<br />
g Au/t). This new zone is associated<br />
with anomalous arsenic and bismuth<br />
hosted at the contact between overlying<br />
but barren calc-silicate altered metamorphic<br />
rocks in thrust-contact with<br />
underlying sericite-altered muscovite<br />
schist.<br />
Rimfire Minerals and AngloGold<br />
USA Exploration announced results<br />
from exploration on Rimfire’s ER-Ogo-<br />
Fire and Eagle properties in the<br />
Goodpaster district. A gold auger soil<br />
anomaly measuring 1,500 × 300 m was<br />
outlined at ER-Ogo-Fire. Gold is associated<br />
with elevated arsenic, bismuth and<br />
antimony and the anomaly remains<br />
open to the north. An orientation soil<br />
auger survey was conducted on the<br />
Eagle property, targeting the intrusivegneiss<br />
contact in two small areas east <strong>of</strong><br />
a grid sampled in 1999. The new soil<br />
sampling adds over a kilometer to the<br />
soil anomaly defined in 1999. The<br />
auger sampling technique has proven<br />
to be effective in penetrating the loess<br />
cover to obtain a better quality sample.<br />
Loess, or wind-blown silt, is unevenly<br />
distributed over the Eagle property and<br />
its existence masks the geochemical<br />
response <strong>of</strong> bedrock mineralization.<br />
Continental Ridge Resources Inc.<br />
announced that AngloGold USA<br />
Exploration completed a three-hole,<br />
1,088-m diamond-drilling program to<br />
test the Hook prospect on its Gobi property<br />
in the Goodpaster district. The<br />
Hook target is a 100-m-wide zone <strong>of</strong><br />
gold mineralization hosted by a newly<br />
mapped granodiorite intrusion near its<br />
contact with surrounding gneissic metamorphic<br />
rocks. Multiple sericite-altered<br />
quartz-veined zones were intersected in<br />
hole AGGP-1. The best assay results<br />
returned 3 m grading 1.05 g Au/tonne<br />
including 0.5 m grading 5.26 g Au/t.<br />
The company indicated that additional<br />
drilling is anticipated for the Gobi property<br />
in 2003.<br />
Alaska newcomer Geologix<br />
Exploration acquired an interest in the<br />
Macomb gold project<br />
from Teck Cominco to page 24 ...<br />
EXPLORATION REVIEWS
24 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 23<br />
Exploration Reviews (Continued)<br />
EXPLORATION REVIEWS<br />
Limited. Geologix has the option to<br />
acquire a 100% interest in the project<br />
by expending $2 million by the end <strong>of</strong><br />
2007. Teck Cominco may re-acquire a<br />
65% interest in the project under certain<br />
conditions. The MaComb property covers<br />
a Cretaceous monzonite stock which<br />
is similar in geological age to the intrusive<br />
rocks at the Pogo deposit, 60 miles<br />
to the north. Previous exploration<br />
returned values <strong>of</strong> 17.6 gpt gold and<br />
39.2 gpt gold from quartz veins and one<br />
float sample <strong>of</strong> granitic host rock<br />
(quartz/sericite altered) with quartz<br />
stockwork which assayed 20.5 gpt gold.<br />
These samples were found within a 1.6<br />
× 6 km soil anomaly, and abundant<br />
fresh visible gold could be panned at<br />
some sites. The company is planning to<br />
conduct drilling on the north end <strong>of</strong> the<br />
soil anomalies and additional surface<br />
prospecting on the property. Welcome<br />
to Alaska, Geologix Exploration!<br />
ALASKA RANGE<br />
Nevada Star Resources announced<br />
results from surface mapping and geophysical<br />
programs over its Dunite Hill<br />
prospect on its MAN project in the central<br />
Alaska Range. The results indicated<br />
a coincidence magnetic and gravity<br />
high zone consisting <strong>of</strong> a probable<br />
magmatic feeder system on the northwestern<br />
end <strong>of</strong> the project and tabular<br />
sills extending to the southeast in the<br />
Dunite Hill area. Two survey lines <strong>of</strong><br />
magnetotellurics geophysics indicated<br />
the tabular bodies in the Dunite Hill<br />
area are highly conductive, suggesting<br />
the presence <strong>of</strong> sulfide mineralization<br />
similar to that seen in some surface outcrops<br />
on the project. Additional work is<br />
planned for the project for 2003.<br />
NORTHERN ALASKA<br />
Silverado Mines reported that underground<br />
development work is continuing<br />
at its Nolan Creek placer mine in the<br />
southern Brooks Range. By the end <strong>of</strong><br />
January the company had advance<br />
approximately 426 ft upstream and 500<br />
ft downstream along the Nolan Deep<br />
channel. This work and other development<br />
work has resulted in a stockpile <strong>of</strong><br />
approximately 7,000 cubic yards <strong>of</strong><br />
gold-bearing gravel that will be treated<br />
in the summer <strong>of</strong> 2003. The company<br />
plans to continue drifting along the<br />
Nolan Deep channel until warmer<br />
spring weather forces seasonal closure<br />
<strong>of</strong> the underground and conversion <strong>of</strong><br />
the operations to mining <strong>of</strong> stockpiled<br />
gravels. The company expects to mine<br />
about 1,500 ft <strong>of</strong> channel this winter<br />
season and complete surface drilling on<br />
the property in late spring.<br />
SOUTHEAST<br />
Hecla Mining (29.73%) and Kennecott<br />
Mining (70.27%) announced revised ore<br />
reserves on its Greens Creek mine on<br />
Admiralty Island. The year-end 2002<br />
proven and probable reserves stood at<br />
7,049,944 t grading 0.13 oz Au/t, 14.9<br />
oz Ag/t, 4.2% Pb and 11.4% Zn. This<br />
equates to about 903,000 oz <strong>of</strong> contained<br />
gold and over 105 Moz <strong>of</strong> contained<br />
silver. The mine also contains<br />
2,725,637 t <strong>of</strong> material classified as<br />
“other resources,” grading 0.13 oz Au/t,<br />
17.0 oz Ag/5, 4.9% Pb and 11.3% Zn.<br />
OTHER<br />
The Fraser Institute, one <strong>of</strong> Canada’s<br />
leading think-tanks, released its<br />
2002–2003 study <strong>of</strong> mineral potential<br />
and investment attractiveness in 47<br />
jurisdictions around the globe. Unlike<br />
in previous studies, Alaska took a beating<br />
in this year’s results, placing 21 st in<br />
policy potential, 11 th in mineral potential<br />
and 12 th in overall mineral investment<br />
attractiveness. Not surprisingly,<br />
Alaska’s poorest showing was in regulatory<br />
issues, land status uncertainty and<br />
infrastructure to support mineral exploration<br />
and development. While it is<br />
clear that some <strong>of</strong> Alaska’s perceived<br />
problems do not exist in reality, it is<br />
equally clear that the perception <strong>of</strong><br />
those participating in the survey is in<br />
fact reality. Anyone interested in this<br />
report should log onto the Fraser<br />
Institute’s website: .<br />
WESTERN<br />
UNITED STATES<br />
Regional Correspondent: Roger C. Steininger<br />
(<strong>SEG</strong> 1978)<br />
Consulting Geologist, 3401 San Mateo Ave.<br />
Reno, NV 89509<br />
Tel. +775.323.7775 Fax +775.323.1134<br />
E-mail: audoctor@aol.com<br />
The annual update meeting <strong>of</strong> the<br />
Ralph J. Roberts Center for Research in<br />
<strong>Economic</strong> Geology at the Mackay<br />
School <strong>of</strong> Mines was held in Reno,<br />
Nevada, on February 7. Progress<br />
reports for several graduate research<br />
projects were presented, including studies<br />
at the Tyrone, Goldstrike, True<br />
North, Getchell, and Deep Post mines.<br />
Also available from the Center are several<br />
theses on geological aspects <strong>of</strong> several<br />
northern Nevada gold mines and<br />
select mines in South America. For more<br />
information contact Tommy Thompson<br />
at Mackay (tommyt@mines.unr.edu).<br />
ARIZONA<br />
Goldcorp has made an investment in<br />
American Bonanza Gold Mining<br />
Corp., sufficient for American Bonanza<br />
to continue the underground development<br />
<strong>of</strong> the Copperstone deposit (La<br />
Paz County). Copperstone has a geological<br />
resource <strong>of</strong> 2.0 million tons (Mt)<br />
with an average grade <strong>of</strong> 0.58 opt Au.<br />
CALIFORNIA<br />
Vista Gold is purchasing the Long<br />
Valley gold deposit in Mono County. A<br />
diligence study <strong>of</strong> the deposit identified<br />
a geological resource, at a 0.01 opt Au<br />
cut-<strong>of</strong>f, <strong>of</strong> about 47.5 Mt <strong>of</strong> oxidized<br />
material with an average grade <strong>of</strong> 0.18<br />
opt Au, and a sulfide-bearing resource<br />
<strong>of</strong> 53.5 Mt with an average grade <strong>of</strong><br />
about 0.017 opt Au. The deposit is still<br />
open in several directions and additional<br />
exploration opportunities exist<br />
on the property.<br />
IDAHO<br />
New Jersey Mining Company reports<br />
that two recently completed drill holes<br />
at the Silver Strand mine (Shoshone<br />
County) have intersected a zone <strong>of</strong><br />
high-grade mineralization that is about<br />
5 ft thick, and contains 0.31 opt Au and<br />
14.75 opt Ag and 0.46 opt Au and 9.22<br />
opt Ag, with associated pyrite, arsenopyrite,<br />
tetrahedrite, and galena. The<br />
Silver Strand mine is along a gold-silver<br />
vein hosted in the Revett Formation.<br />
The new drilling results are sufficiently<br />
encouraging for Silver Standard to initiate<br />
permitting for a seasonal mining<br />
operation. Ore would be hauled to the<br />
New Jersey mill for processing.<br />
Twin Mining Corporation is moving<br />
forward with the evaluation <strong>of</strong> the<br />
Atlanta Gold project (Boise County).
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 25<br />
Metallurgical drilling in the Monarch<br />
and Idaho deposits was completed and<br />
testing is underway to determine the<br />
heap leach characteristics <strong>of</strong> the<br />
deposits.<br />
MONTANA<br />
Apollo Gold initiated an expansion <strong>of</strong><br />
the Montana Tunnels mine in Jefferson<br />
County. A new layback has started that<br />
will allow production to continue for<br />
another four years. Studies are also<br />
underway to determine if yet another<br />
layback is warranted to access deeper<br />
mineralization, or if an underground<br />
development is more economic. As part<br />
<strong>of</strong> the re-engineering, the new reserve is<br />
about 19 Mt with an average grade <strong>of</strong><br />
0.015 opt Au, plus recoverable silver,<br />
zinc, and lead.<br />
Sterling Mining Company <strong>of</strong> Idaho<br />
(not to be confused with Sterling Mining<br />
Company <strong>of</strong> Montana, so the press<br />
release states) has leased the JE Silver-<br />
Copper project, about 10 miles southeast<br />
<strong>of</strong> the Troy deposit and three miles<br />
northwest <strong>of</strong> the Rock Creek deposit<br />
(Lincoln County). This is a Revett<br />
Formation-type Ag-Cu deposit, similar<br />
to the others in the area. Let’s hope the<br />
environmental situation is better at JE<br />
than the other deposits nearby.<br />
NEVADA<br />
The march <strong>of</strong> Canadian junior mining<br />
companies into Nevada has resumed. I<br />
was having a meal in one <strong>of</strong> the<br />
favorite gathering spots for exploration<br />
groups during the last “gold rush” and<br />
it looked like the “good old days.”<br />
<strong>Geologists</strong> who were discussing plans,<br />
properties, etc., occupied several tables.<br />
Every time an elevated voice said something<br />
about grade, location, or ownership<br />
people at several tables became<br />
silent and heads turned. Also signaling<br />
renewed activity in the Great Basin is<br />
the deluge <strong>of</strong>—well, at least a few—<br />
properties that are being acquired.<br />
Atna Resources’ announcement <strong>of</strong> the<br />
Clover prospect acquisition in the<br />
Midas district is an example. Past<br />
drilling at Clover intersected gold-bearing<br />
intervals from a few feet to about 30<br />
ft wide, with grades <strong>of</strong> several-tenths <strong>of</strong><br />
an ounce <strong>of</strong> gold per ton <strong>of</strong> rock. We<br />
now have bumper stickers available for<br />
those interested that reads, “Please,<br />
God, let there be one more gold boom,<br />
and this time I will not waste it.” The<br />
price <strong>of</strong> this item is tied to the price <strong>of</strong><br />
gold.<br />
Nevada Pacific announced that<br />
Placer Dome has entered into an<br />
agreement to explore their Battle<br />
Mountain gold project (BMX) in the<br />
Battle Mountains (Lander County). The<br />
property consists <strong>of</strong> 24 square miles <strong>of</strong><br />
mineral rights within a triangle formed<br />
by the Marigold, Surprise, and<br />
Fortitude mines. The claims contain<br />
numerous gold-silver-copper targets.<br />
Placer Dome will pay Nevada Pacific<br />
cash and fund an aggressive exploration<br />
program.<br />
And I quote, “The Pinon project is<br />
located in proximity to the…Round<br />
Mountain Mine.” So declares a recent<br />
news release from Rare Earth Metals<br />
Corp. The Pinon project (Nye County)<br />
contains the Longstreet gold deposit,<br />
which is at least 30 miles east <strong>of</strong> Round<br />
Mountain. Times must be getting better.<br />
News releases that start relating<br />
how close a prospect is to producing<br />
mines, or on a specific trend, are sure<br />
signs that gold exploration activities are<br />
on an upswing.<br />
Royal Standard Minerals will proceed<br />
with development <strong>of</strong> a decline for<br />
bulk sampling, and possibly the start <strong>of</strong><br />
production, <strong>of</strong> the Gold Wedge deposit<br />
in the Manhattan mining district, Nye<br />
County. Gold Wedge contains a<br />
resource <strong>of</strong> slightly more than 1 Mt <strong>of</strong><br />
rock that contains about 0.50 opt Au, at<br />
a cut-<strong>of</strong>f <strong>of</strong> 0.15 opt Au. Gold mineralization<br />
is along the Reliance fault and<br />
ring faults <strong>of</strong> the Manhattan caldera.<br />
Much <strong>of</strong> the mineralization is in Lower<br />
Paleozoic sedimentary rocks, in a geological<br />
setting similar to the nearby<br />
deposits mined by Echo Bay, et al.<br />
Vista Gold completed seven reverse<br />
circulation holes totaling 7,020 ft at<br />
Maverick Springs, White Pine County.<br />
These holes outlined additional mineralization<br />
in an area <strong>of</strong> about 2,200 ×<br />
1,200 ft, and at least 500 ft from the<br />
Maverick Springs gold-silver deposit.<br />
Mineralization in the new zone is<br />
between 300 to 695 ft below the surface,<br />
and varies in thickness from 100 to 375<br />
ft. Grades encountered were in the<br />
range <strong>of</strong> 0.008 and 0.026 opt Au and<br />
0.52 and 3.85 opt Ag.<br />
Metallic Ventures recently completed<br />
28 reverse circulation drill holes<br />
at the Gemfields property in Esmeralda<br />
County. The program was designed to<br />
“confirm and enhance the understanding”<br />
<strong>of</strong> the 500,000 oz gold resource.<br />
The two best intervals were 163 ft <strong>of</strong><br />
0.163 opt Au and 268 feet <strong>of</strong> 0.118 opt<br />
Au, starting at about 300 ft down the<br />
hole. The other holes contained significant<br />
intervals <strong>of</strong> 0.0X opt Au.<br />
Following on this success, they are planning<br />
at least two more drilling programs<br />
in the district. A substantial<br />
drilling program is planned for<br />
McMahon Ridge to follow up on last<br />
year’s drilling, where two <strong>of</strong> the best<br />
holes contained about 25 ft <strong>of</strong> 0.958 opt<br />
Au and 13 ft <strong>of</strong> 0.922 opt Au. Drilling<br />
is also planned in the Tom Keane mine<br />
area, about five miles east <strong>of</strong> the<br />
Goldfield Main district.<br />
Metallic Ventures also plans to drill<br />
the Converse project (Humboldt<br />
County) during 2003. The deposit contains<br />
an indicated and inferred geological<br />
resource <strong>of</strong> about 2.7 Moz. The<br />
planned program will focus on infill<br />
drilling in the resource area. An<br />
announcement was also made that<br />
they will continue exploring the<br />
Esmeralda project in the Aurora mining<br />
district (Mineral County).<br />
Underground and surface drilling is<br />
planned along the Prospectus and<br />
Martinez veins.<br />
Mill City International has entered<br />
into an agreement to earn into<br />
Anaconda Gold Corporation’s option<br />
<strong>of</strong> the Horse Mountain and North Star<br />
gold projects. Horse Mountain is in the<br />
northern part <strong>of</strong> the Carlin trend, and<br />
North Star is north <strong>of</strong> the Ken Snyder<br />
mine (both in Elko County). The price<br />
<strong>of</strong> gold must be getting better; the deals<br />
are becoming more complex again.<br />
Apollo Gold announced the results<br />
<strong>of</strong> the 2002 exploration program at<br />
Florida Canyon mine, and the nearby<br />
Standard property (both in Humboldt<br />
County). Drilling at Florida Canyon<br />
expanded the reserves by about the<br />
same amount <strong>of</strong> gold as was produced<br />
in 2002. The new reserve is about 20<br />
Mt with an average grade <strong>of</strong> 0.017 opt<br />
Au. Additional drilling is planned for<br />
2003, with the intent <strong>of</strong> further expanding<br />
the reserve base. At the Standard<br />
property 89,000 ft <strong>of</strong> drilling defined<br />
several gold deposits and developed a<br />
reserve <strong>of</strong> 17.2 Mt, with an average<br />
grade <strong>of</strong> 0.017 opt Au. Additional<br />
drilling in 2003 is also planned at<br />
Standard, and subject to permitting, the<br />
first production is anticipated for the<br />
fourth quarter <strong>of</strong> 2004.<br />
Newmont Mining Corp. had a successful<br />
year in northern Nevada with<br />
the replacement <strong>of</strong> depleted reserves for<br />
the first time since 1996. Combined<br />
proven and probable<br />
reserves at the end <strong>of</strong> to page 26 ...<br />
EXPLORATION REVIEWS
26 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 25<br />
Exploration Reviews (Continued)<br />
EXPLORATION REVIEWS<br />
2002 for the mines in northern Nevada<br />
are 506 Mt with an average grade <strong>of</strong><br />
0.061 opt Au.<br />
Queenstake Resources is purchasing<br />
the Jerritt Canyon property from<br />
AngloGold and Meridian Gold.<br />
Proven and probable reserves are estimated<br />
to be about 2.5 Mt with and<br />
average grade <strong>of</strong> 0.236 opt Au, with an<br />
additional resource <strong>of</strong> 4.9 Mt with an<br />
average grade <strong>of</strong> 0.261 opt Au. Of<br />
course, exploration potential abounds.<br />
WASHINGTON<br />
Crown Resources continued to explore<br />
the possibility <strong>of</strong> developing a gold<br />
reserve that could be mined underground<br />
at the Buckhorn Mountain<br />
property (formerly known as Crown<br />
Jewell). Several drill holes have intersected<br />
grades in excess <strong>of</strong> 1 opt Au over<br />
several feet, within broader zones <strong>of</strong><br />
greater than 0.1 opt Au.<br />
AUSTRALASIA<br />
Regional Correspondent: Neil Phillips<br />
(<strong>SEG</strong> 1985)<br />
CSIRO, C/- PO Box 3, Central Park, Victoria<br />
Australia 31<strong>45</strong><br />
E-mail: neil.phillips@csiro.au<br />
and Kim Ely<br />
CSIRO, C/- PO Box 3, Central Park, Victoria<br />
Australia 31<strong>45</strong><br />
With contributions from<br />
T. Baker (<strong>SEG</strong> 1994 F), Australia<br />
A. Williamson (Department <strong>of</strong> Mining, Papua<br />
New Guinea), PNG<br />
P. Grieve, New Zealand<br />
AUSTRALIA<br />
Australian mineral exploration expenditure<br />
for 2002 was US$338 million,<br />
remaining at slightly above 17% <strong>of</strong> the<br />
global total, which itself fell last year.<br />
As absolute exploration expenditure in<br />
Australia has decreased from the peak<br />
in 1997, the commodity focus has<br />
changed very little. Over half the effort<br />
is still directed toward gold, base metals<br />
were subordinate, and coal increased<br />
from a low base. Mineral sands have<br />
been an increasing exploration interest<br />
within the Murray Basin <strong>of</strong> South<br />
Australia, Victoria, and New South<br />
Wales. By far the greatest overall interest<br />
has been in the Archean Yilgarn<br />
craton (10% <strong>of</strong> global total). There is<br />
continued interest in some emerging<br />
areas, including the Musgrave province,<br />
for nickel and copper; the Gawler<br />
province, for copper-gold; and the<br />
Tanami province and parts <strong>of</strong> the<br />
Kimberley areas, for gold.<br />
WESTERN AUSTRALIA<br />
In the Yilgarn craton several gold<br />
explorers have had promising results<br />
from drilling in previously underexplored<br />
areas. Independence Gold’s<br />
Tropicana project, east <strong>of</strong> Laverton, has<br />
returned significant mineralization from<br />
wide-spaced drilling. Two hits 2 km apart<br />
returned 9 m @ 1.04 g/t and 4 m @ 1.34<br />
g/t. Cullen Resources has announced<br />
results from drilling in the Mt Eureka<br />
greenstone belt, which lies 100 km east<br />
<strong>of</strong> the gold-rich Yandal belt. Aircore<br />
drilling <strong>of</strong> the Southern zone prospect<br />
has outlined extensive anomalous gold<br />
(>100 ppb) in weathered bedrock<br />
extending over 1,000 × 400 m with a<br />
northeast trend. First pass RC drilling <strong>of</strong><br />
Southern has returned significant results<br />
including 8 m @ 4.28 g/t Au and 38 m<br />
@ 1.08 g/t Au. Eureka Northwest is a<br />
new discovery made by Cullen when<br />
testing a base-<strong>of</strong>-hardpan gold geochemical<br />
anomaly. Three RC holes were<br />
drilled to follow up previous RAB and<br />
aircore drilling. Hole MERC 55 returned<br />
an intersection <strong>of</strong> 10 m @ 2.52 g/t Au.<br />
In the Murchison province, Giralia<br />
Resources have announced encouraging<br />
results from drilling at their Snake<br />
Well gold project. Intersections at the<br />
Rabbit Well Calisi prospect <strong>of</strong> 4 m @<br />
10.6 g/t Au and 49 m @ 0.55 g/t Au<br />
along strike from previous drill intercepts<br />
define supergene and primary<br />
resource potential associated with zones<br />
<strong>of</strong> quartz veining. Also in the<br />
Murchison province, the Mt Gibson<br />
gold mine, which has been closed since<br />
1999, may be recommissioned by<br />
Oroya Mining, subject to a successful<br />
bankable feasibility study. The mineral<br />
resource at Mt Gibson stands at 0.75<br />
Moz Au, and following a drilling program<br />
designed to convert resources into<br />
reserves, it is predicted that the mine<br />
could be producing again by late 2003.<br />
Following 10 years <strong>of</strong> legal dispute,<br />
the High Court decided on the tenement<br />
ownership <strong>of</strong> the unexplored<br />
Bronzewing South lease, on the southern<br />
border <strong>of</strong> Newmont’s 4-Moz<br />
Bronzewing deposit. AuDAX Resources<br />
has commenced exploration in a JV<br />
agreement with Newmont. Rapid definition<br />
<strong>of</strong> RC targets is expected to be generated<br />
via an initial RAB/aircore programme<br />
<strong>of</strong> 600 holes covering a<br />
corridor south <strong>of</strong> the Bronzewing mine.<br />
Significant results have also been<br />
received by AuDAX from the first RC<br />
drilling program at the nearby Yandal<br />
West prospect, 200 m along strike from<br />
the Dragon deposit.<br />
Pilbara Mines have reported a<br />
resource at the Jaguar base metals<br />
deposit <strong>of</strong> 1.4 Mt @ 3.7% Cu, 13.2% Zn,<br />
0.9% Pb, 140 g/t Ag and 0.18 g/t Au for<br />
184,000 t <strong>of</strong> contained zinc, 51,800 t <strong>of</strong><br />
copper and 6.3 Moz <strong>of</strong> silver. With JV<br />
partners Inmet Mining, Pilbara are<br />
undertaking further studies with a view<br />
toward development <strong>of</strong> the deposit,<br />
located 260 km north <strong>of</strong> Kalgoorlie.<br />
Junior nickel sulfide producer,<br />
Mincor Resources, has had recent<br />
exploration success in the Kambalda<br />
district, including an intersection <strong>of</strong> 2.5<br />
m @ 6.70% Ni from 422.23 m in massive<br />
and matrix style sulfide mineralization.<br />
In the southwest Yilgarn at<br />
Western Areas’ Forrestonia project,<br />
diamond drilling is in progress at the<br />
Daybreak prospect, testing for possible<br />
extensions to the deposit below a horizontal<br />
fault at 400 m depth. Recently<br />
announced results include 9.3 m @<br />
3.5% Ni and 8.8 m @ 2.2% Ni. LionOre<br />
received board approval to develop the<br />
Maggie Hays nickel deposit, which will<br />
be integrated with the nearby Emily<br />
Ann operation, resulting in a combined<br />
production <strong>of</strong> 10,000 to 12,000 tonnes<br />
(t) <strong>of</strong> payable nickel per annum. Total<br />
Indicated Resource at Maggie Hays is<br />
10.8 Mt at 1.5% Ni. Following the<br />
increase <strong>of</strong> LionOre’s interest in the surrounding<br />
Lake Johnson area tenements<br />
to 100%, the exploration program for<br />
further nickel sulfide deposits will be<br />
expanded. LionOre shared more success<br />
when Dr. Mark Bennet was recently<br />
named Prospector <strong>of</strong> the Year for his<br />
role in the discovery <strong>of</strong> Emily Ann and<br />
the Thunderbox gold deposit.<br />
BHP Billiton is expanding its iron<br />
ore mining operations near Newman in<br />
the Pilbara region, with construction<br />
work continuing on plant and railway<br />
infrastructure for the Mining Area C<br />
project, scheduled to commission in late<br />
2003. The deposit has an estimated<br />
resource <strong>of</strong> 890 Mt, with reserves currently<br />
standing at 189 Mt.
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 27<br />
A prefeasibility study <strong>of</strong> Gunson<br />
Resources’ Coburn mineral sand project<br />
has concluded that the Amy zone<br />
deposit, with a resource <strong>of</strong> 516 Mt averaging<br />
1.4% heavy minerals, will support<br />
a pr<strong>of</strong>itable, long-term mining<br />
operation. Gunson Resources is also<br />
actively exploring in the Musgrave<br />
Ranges, reporting the intersection <strong>of</strong> a<br />
kimberlitic pipe in the first hole drilled<br />
at the Shell Lakes nickel/diamonds project<br />
in a program supported by De<br />
Beers Australia Exploration.<br />
Rio Tinto is commencing a feasibility<br />
study on its Argyle diamond mine to<br />
determine the potential <strong>of</strong> the mine’s<br />
future as an underground operation.<br />
Current mining operations are planned<br />
to finish in 2007, but underground<br />
development could extend the mine’s<br />
life as far as 2020.<br />
AKD Limited reported the recovery<br />
<strong>of</strong> diamond indicator minerals from a<br />
sampling program at the northern<br />
Kimberley region King George project<br />
and will be carrying out follow-up sampling.<br />
Other diamond exploration<br />
activities are occurring in the Seppelt<br />
Range, and the South West Diamond JV<br />
in the southern Yilgarn region.<br />
Pending the outcome <strong>of</strong> a feasibility<br />
study, Platinum Australia is set to<br />
open Australia’s first platinum-palladium<br />
mine. The Panton Sill deposit in<br />
the Kimberley region includes resources<br />
<strong>of</strong> 10.6 Mt @ 5.8 g/t PGE + Au in the<br />
Top Reef, and an additional 5.7 Mt @<br />
3.4 g/t PGE + Au in the Middle Reef system.<br />
Commencement <strong>of</strong> construction<br />
later this year could see first production<br />
from the new mine in early 2004. The<br />
first reconnaissance RC drilling program<br />
completed by West Musgrave<br />
Mining at its Cavenagh Range project<br />
has confirmed the presence <strong>of</strong> broad<br />
zones <strong>of</strong> copper/PGE mineralization at<br />
several prospects.<br />
SOUTH AUSTRALIA<br />
In the Gawler craton, the latest round <strong>of</strong><br />
grade control drilling at Dominion<br />
Mining’s new Challenger gold mine<br />
has confirmed the high-grade nature <strong>of</strong><br />
the M1 shoot, with results including 5<br />
m @ 224 g/t Au and 8 m @ 20.3 g/t Au.<br />
Deeper drilling for the Challenger<br />
Underground feasibility study commenced<br />
during the quarter, with results<br />
from the M1 shoot indicating its continuity<br />
at depth. Intersections include 9<br />
m @ 18.85 g/t Au and 5 m @ 27.1 g/t<br />
Au. Encouraging results have also been<br />
reported from regional RAB drilling in<br />
the Challenger corridor.<br />
Adelaide Resources are following up<br />
on promising diamond drilling results<br />
at their Barns gold project with drilling<br />
<strong>of</strong> the untested northern sector <strong>of</strong> the<br />
calcrete geochemical anomaly. Further<br />
diamond results from Barns include<br />
intersections <strong>of</strong> 24 m @ 2.19 g/t Au and<br />
11m @ 2.84 g/t Au.<br />
Minotaur have continued drilling at<br />
the Prominent Hill copper-gold<br />
prospect, testing for extensions <strong>of</strong><br />
known mineralization. Mineralized<br />
intervals were intersected in 5 <strong>of</strong> 7<br />
holes, drilled up to a kilometer from<br />
existing mineralization, including 16 m<br />
@ 1.39% Cu, 0.10g/t Au and 6 g/t Ag<br />
from 321 m.<br />
VICTORIA<br />
AGD Mining’s recent results at the<br />
Augusta gold-antimony deposit at<br />
Costerfield support plans for an open<br />
cut mine with a 75,000-tonne annual<br />
production. Results include 0.15 m @<br />
86.8 g/t Au and 1.3% Sb from 13.65 m<br />
and 0.42 m @ 31.2 g/t Au and 19.9%<br />
Sb. The total resource estimate for the<br />
project stands at 290,000 t grading 12<br />
g/t Au and 6.2% Sb. A regional aircore<br />
drilling program in the Costerfield corridor<br />
has produced four additional exploration<br />
targets.<br />
Ballarat Goldfields has undergone<br />
restructure and refinancing, and<br />
intends to focus on its objective <strong>of</strong> establishing<br />
a mining operation on its<br />
Ballarat tenements, where an inferred<br />
resource <strong>of</strong> around 1 million ounces has<br />
been previously calculated. Alliance<br />
Energy is set to revive the Maldon gold<br />
field (2 Moz historic production) after<br />
securing the investment support <strong>of</strong><br />
Abbotsleigh. Alliance is focussing on<br />
several deposits within trucking distance<br />
<strong>of</strong> Roxbury Mining Contractor’s<br />
Porcupine Flat treatment plant.<br />
Bendigo Mining is undertaking<br />
exploration development and bulk<br />
sampling work toward development <strong>of</strong><br />
the New Bendigo gold mine. Recent<br />
bulk sampling results returning 3 to 22<br />
g/t have met or exceeded the company’s<br />
expectations, and a decision to<br />
mine the 700,000 oz resource is scheduled<br />
to be made in late 2003.<br />
The historic Ararat gold field in western<br />
Victoria was a significant source <strong>of</strong><br />
alluvial gold; however, major primary<br />
deposits have never been discovered in<br />
the district. Range River Gold has been<br />
drilling structural targets within its<br />
Ararat project, from which 600,000 oz<br />
was recovered from alluvial deposits<br />
across the tenement area. Results from<br />
the RAB drilling program indicated<br />
widespread gold mineralization within<br />
volcanogenic and schist rock types considered<br />
equivalent to the host rocks at<br />
the nearby Stawell gold mine.<br />
NEW SOUTH WALES<br />
Newcrest is continuing to receive<br />
encouraging intersections from near its<br />
new Ridgeway copper-gold mine,<br />
including 72 m @ 1.78 g/t Au and<br />
0.87% Cu. Drilling at the advanced<br />
Cadia East/Cadia Far East project has<br />
returned results including 408 m @<br />
0.70g/t Au and 0.29%Cu.<br />
Consolidated Broken Hill drilling<br />
results from the Western Mineralisation<br />
zone <strong>of</strong> the Rasp mine silver-lead-zinc<br />
project confirm significant high-grade<br />
zones and enhance the economic potential<br />
<strong>of</strong> the project. Intersections include<br />
5.3 m @ 18.5% Zn, 13.6% Pb and 60 g/t<br />
Ag from 312.4 m and 13.7 m @ 11.7%<br />
Zn, 6.6% Pb and 35 g/t Ag from 304 m.<br />
QUEENSLAND<br />
Buka Minerals has reported encouraging<br />
copper grades from the Lady Annie<br />
project near the Lady Loretta lead-zinc<br />
deposit, Mount Isa inlier. Twenty-nine<br />
holes were drilled and results included<br />
35 m @ 3.3% Cu and 19 m @ 5.5% Cu.<br />
Elsewhere in the Mount Isa district,<br />
Universal Resources announced significant<br />
copper-gold intersections at the<br />
Lady Clayre prospect, including 40 m @<br />
1.13% Cu and 0.32 g/t Au, and 12 m @<br />
6.13% Cu and 4.47 g/t Au.<br />
Further drilling by Strategic<br />
Minerals at their Woolgar epithermal<br />
gold project, in north Queensland has<br />
confirmed a 300-m strike length <strong>of</strong> the<br />
Explorer Main Vein structure, still open<br />
to the southeast. Recent drilling results<br />
include 2 m @ 52.2 g/t Au and 12m @ 8<br />
g/t Au. Further high-grade intersections<br />
have also been reported at Newcrest’s<br />
Cracow gold project, including 12.15 m<br />
@ 13 g/t Au from 561m.<br />
MIM Holdings has announced substantial<br />
increases to their resources,<br />
which is expected to have considerable<br />
impact on expansion and mine life <strong>of</strong><br />
the Mt Isa copper and lead-zinc-silver<br />
and Ernest Henry copper-gold operations.<br />
The resources include a new 290<br />
Mt open pit resource at Mt Isa, and an<br />
underground resource at Ernest Henry<br />
<strong>of</strong> 5 Mt.<br />
NORTHERN TERRITORY<br />
Elkedra Diamonds has recovered 48<br />
chromite diamond<br />
indicators and to page 28 ...<br />
EXPLORATION REVIEWS
28 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 27<br />
Exploration Reviews (Continued)<br />
EXPLORATION REVIEWS<br />
another microdiamond from its Wanda<br />
prospect, 300 km northeast <strong>of</strong> Alice<br />
Springs. Many <strong>of</strong> the indicators and<br />
microdiamonds were found near the<br />
headwaters <strong>of</strong> river and stream<br />
drainages suggesting a proximal<br />
source. Rio Tinto has announced its<br />
intention to close the Merlin diamond<br />
mine, after failing to find a buyer for<br />
the small scale operation. Decommissioning<br />
and rehabilitation are scheduled<br />
to be completed during 2003.<br />
In the Tennant Creek gold field,<br />
Giants Reef Mining has begun mining<br />
the open pit at its Chariot project and<br />
expects to pour the first gold by July. The<br />
development comprises a small open cut<br />
and underground mine, processing a<br />
total <strong>of</strong> 434,000 tonnes grading 14.5 g/t<br />
for a contained 203,000 oz <strong>of</strong> gold.<br />
NEW ZEALAND<br />
Heritage Gold plans to drill at Waihi<br />
North and Karangahake, near<br />
Newmont’s Martha mine within the<br />
Waihi gold mining district (historic production<br />
<strong>of</strong> 9 Moz <strong>of</strong> gold and 47 Moz <strong>of</strong><br />
silver). Newmont completed 30,000 m<br />
<strong>of</strong> core drilling on the high-grade<br />
Favona deposit at Waihi and plans an<br />
exploration drive. GRD Macraes continues<br />
drilling on the Sams Creek<br />
intrusion-related gold prospect.<br />
PNG<br />
Exploration and mining received a<br />
boost following the adoption <strong>of</strong> new<br />
incentives. Below is a summary <strong>of</strong> fiscal<br />
terms for mining.<br />
Income Tax 30%<br />
Dividend<br />
withholding tax 10%<br />
Depreciation<br />
Royalty 2%<br />
Exploration<br />
expenditure<br />
deductions 200%<br />
25% declining<br />
balance pool<br />
Additional pr<strong>of</strong>its tax<br />
Ring fencing<br />
Mining levy<br />
Capital gains tax<br />
State equity<br />
Fiscal stability<br />
abolished<br />
relaxed<br />
none<br />
none<br />
under review<br />
optional<br />
Highlands Pacific is gathering technical<br />
information aiming for a 2004<br />
start-up <strong>of</strong> the 1 Moz Kainantu Au<br />
deposit. At Frieda there is diamond<br />
drilling <strong>of</strong> Cu-Au porphyry targets. Field<br />
work is planned to re-commence soon<br />
at Wafi Cu-Au, testing for extensions to<br />
the existing resource, <strong>of</strong> 100 Mt at 1.3%<br />
Cu and 0.6 g/t Au for a contained 1.3<br />
Mt <strong>of</strong> copper metal and 1.9 m oz <strong>of</strong><br />
gold. At Hidden Valley Au there is<br />
assessment <strong>of</strong> components <strong>of</strong> the latest<br />
feasibility study. 1<br />
<strong>SEG</strong>-Sponsored Symposium<br />
GEOPHYSICAL SERVICES<br />
“ANDEAN METALLOGENESIS:<br />
NEW CONCEPTS, DISCOVERIES<br />
and UPDATES”<br />
October 6 - 10, 2003 - Concepción, Chile<br />
The symposium will focus on the geology and case histories <strong>of</strong> the principal<br />
new base and precious metal discoveries in the Central and Southern Andes.<br />
It will also include updates on the geology <strong>of</strong> many other deposits as well as<br />
regional review contributions by keynote speakers. The conference is a<br />
must-attend event for all geoscientists engaged in exploration and ore<br />
research in the Andes.<br />
The Technical Program will include presentations covering deposits in<br />
Chile, Peru and Ecuador. Comparative metallogenic studies and future<br />
exploration trends will also be covered.<br />
The symposium will be held in conjunction with the 10th Chilean Geological<br />
Congress.<br />
-10th Chilean Geological Congress:<br />
PAID ADVERTISEMENT<br />
Contacts:<br />
-Symposium on Andean Metallogenesis: JOSE PERELLO<br />
jperello@aminerals.cl<br />
COMITE ORGANIZADOR<br />
DEPARTAMENTO CIENCIAS DE LA TIERRA<br />
UNIVERSIDAD DE CONCEPCIO N<br />
CASILLA 160-C, CONCEPCION, CHILE<br />
Tel/Fax : (56) (41) 246075<br />
E-mail : cgeologico@udec.cl<br />
web page : www.udec.cl/cgeologico<br />
• Geophysical Consulting, Survey Design,<br />
Data Interpretation<br />
• Subsurface Structural Mapping<br />
• Ground Water Delineation<br />
• Minerals Exploration<br />
• Rentals<br />
• Equipment Sales<br />
• Physical Properties Lab<br />
Electromagnetic<br />
(EM) Techniques,<br />
Induced Polarization<br />
(IP) Techniques, Gravity,<br />
Magnetics, Shallow Seismic,<br />
& Downhole Techniques<br />
ZONGE<br />
ENGINEERING & RESEARCH ORGANIZATION<br />
1-800-523-9913 or 520-327-5501<br />
Fax 520-325-1588, seg@zonge.com, www.zonge.com<br />
Offices World Wide<br />
USA: -Tucson, Arizona -Sparks, Nevada -Anchorage & Fairbanks, Alaska<br />
PAID ADVERTISEMENT
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 29<br />
<strong>SEG</strong> MEMBERSHIP NEWS<br />
CANDIDATES FOR 1 FELLOWSHIP<br />
To All <strong>SEG</strong> Fellows:<br />
Pursuant to the <strong>Society</strong>’s Bylaws, names <strong>of</strong> the following candidates, who have been recommended for Fellowship by the<br />
Admissions Committee, are submitted for your consideration. Each applicant’s name and current position are followed by the<br />
names <strong>of</strong> their <strong>SEG</strong> sponsors. If you have any comments, favorable or unfavorable, on any candidate, you should send them,<br />
in writing before May 31, 2003. If no objections are received by that date, these candidates will be presented to Council for<br />
approval.<br />
Address Comments To:<br />
Chair, <strong>SEG</strong> Admissions Committee<br />
SOCIETY OF ECONOMIC GEOLOGISTS • 7811 Shaffer Parkway • Littleton, CO 80127 • USA<br />
Bell, Peter D., Newmont Mining Corporation, Denver, CO: Dale<br />
R. Finn, E. Kennth Paul, Jr.;<br />
Benn, Keith B., University <strong>of</strong> Ottawa, Ottawa, ON, Canada:<br />
Keiko H. Hattori, C. Michael Lesher;<br />
Hart, Craig J. R., Yukon Geology Program, Whitehorse, YT,<br />
Canada: Richard J. Goldfarb, David I. Groves;<br />
Li, Chusi, Indiana University, Bloomington, IN: Edward M.<br />
Ripley, C. Michael Lesher;<br />
Moody, Timothy C., Rio Tinto Mining and Exploration, Lima,<br />
Perú: Richard H. Sillitoe, César E. Vidal;<br />
Moscosa, Martin, Minera Peñoles de Perú S. A., Arequipa, Perú:<br />
William T. Parry, Erich U. Petersen;<br />
Rowins, Stephen M., University <strong>of</strong> British Columbia, Vancouver,<br />
BC, Canada: Alastair J. Sinclair, Ronald M. Britten;<br />
Wormald, Peter J., Geologic Consultant, Salta, Argentina:<br />
Francisco I. de Azevedo, Jr., Jeffrey W. Hedenquist.<br />
THE SOCIETY ALSO WELCOMES THE ABOVE CANDIDATES AS NEW MEMBERS<br />
The <strong>Society</strong> Welcomes<br />
The Following<br />
NEW1FELLOWS:<br />
Fernando J. A. S. Barriga, University <strong>of</strong><br />
Lisbon, Lisbon, Portugal; Richard L.<br />
Bedell, Jr., GeoCorp, Reno, NV; David R.<br />
Burrows, Inco Technical Services Ltd.,<br />
Mississauga, ON, Canada; Alberto<br />
Caballero, Minera Anaconda Perú S. A.,<br />
Lima, Perú; Miguel Cardozo, Consulting<br />
Geologist, Lima, Perú; Victor S. Carlotto,<br />
Consulting Geologist, Cusco, Perú; Raul R.<br />
Fernandez, Instituto de Recursos<br />
Minerales, La Plata, Argentina; Tomas M.<br />
Guerrero, B. O. Consulting, Lima, Perú;<br />
Dieter A. Krewedl, Coeur d’Alene Mines<br />
Corporation, Coeur d’Alene, ID; Jose E.<br />
Machare, Minera Barrick S. A., Lima,<br />
Perú; Peter J. MacLean, Consulting<br />
Geologist, Durango, Mexico; K. Brock<br />
Riedell, BHP Billiton World Exploration,<br />
Vancouver, BC, Canada.<br />
The <strong>Society</strong> Welcomes<br />
The Following<br />
NEW1MEMBERS:<br />
Akio Abe, S. C. M. Atacama Kozan, Tierra<br />
Amarilla, Chile; Neil D. Adshead, Placer<br />
Dome, Inc., Vancouver, BC, Canada;<br />
Frederik P. Badenhorst, Anglo Gold,<br />
Karibib, Namibia; Mark J. Balog,<br />
Comaplex Minerals Corporation, Calgary,<br />
AB, Canada; David M. Barbour, Altius<br />
Resources, Inc., Portugal Cove, NF,<br />
Canada; Graham C. Begg, WMC<br />
Resources Ltd., Coolbinia, WA, Australia;<br />
John A. Bradford, Aurora Platinum<br />
Corporation, Vancouver, BC, Canada;<br />
Roland W. Butler, Altius Minerals, St.<br />
John’s, NF, Canada; Nicholas J. Callan,<br />
Geological Consultant, Santiago, Chile;<br />
Cesar Casquet, Universidad Complutense,<br />
Madrid, Spain; Michael P. Dempsey,<br />
Encana Oil and Gas, Golden, CO; Jean-<br />
Philippe Desrochers, Compania Minera<br />
Quebrada Blanca, Iquique, Chile;<br />
Kieran Downes, Kieran Downes and<br />
Associates Ltd., Nanaimo, BC, Canada;<br />
Michel Dubois, Universite Paul Sabatier,<br />
Toulouse, France; Robert A. Duncan,<br />
Expatriate Resources Ltd., Vancouver, BC,<br />
Canada; David S. Dunn, Consulting<br />
Geologist, Gibsons, BC, Canada; David L.<br />
Eddy, Bureau <strong>of</strong> Land Management,<br />
Phoenix, AZ; Matthew C. Farmer,<br />
Tiberon Minerals, Chiang Mai, Thailand;<br />
Robert J. Fleck, U. S. Geological Survey,<br />
Menlo Park, CA; George Gorzynski,<br />
Geological Consultant, North Vancouver,<br />
BC, Canada; Garret W. Graaskamp,<br />
American Ground Water Trust, Concord,<br />
NH; Herwart Helmstaedt, Queen’s<br />
University, Kingston, ON, Canada; Steven<br />
R. Hunns, University <strong>of</strong> Tubingen,<br />
Reutlingen, Germany; Gawen R. T.<br />
Jenkin, The University <strong>of</strong> Leicester,<br />
Leicester, Great Britain; Felix Kaminsky,<br />
KM Diamond Exploration Ltd., West<br />
Vancouver, BC, Canada; Niilo K.<br />
Karkkainen, Geological Survey <strong>of</strong><br />
Finland, Espoo, Finland; Edward M.<br />
Lyons, Geological Consultant, Victoria,<br />
BC, Canada; Boyd E. MacKean,<br />
Geological Consultant, Denman Island,<br />
BC, Canada; Paul R. Mattinen,<br />
Geological Consultant, Reno, NV; Paul J.<br />
McGuigan, Cambria Geological Ltd.,<br />
Vancouver, BC, Canada; Henry M.<br />
Meixner, Geological Consultant,<br />
Vancouver, BC, Canada; John C.<br />
Menzies, CMI Capital Limited,<br />
Vancouver, BC, Canada; Vladislav E.<br />
Minaev, The Academy <strong>of</strong> Sciences,<br />
Institute <strong>of</strong> Geology, Dushanbe,<br />
Tajikistan; Sisir K. Mondal, Jadavpur<br />
University, Calcutta, India; Jonathan<br />
Naden, British Geological Survey,<br />
Keyworth, Great Britain; Henry E.<br />
Newgebauer, Jalna Resources, Vancouver,<br />
BC, Canada; Stawomir Oszczepalski,<br />
Polish Geological Institute, Warsaw,<br />
Poland; Craig A. Parry, Rio Tinto Mining<br />
and Exploration, Ant<strong>of</strong>agasta, Chile;<br />
William S. Peters, Southern Geoscience<br />
Consultants, Ardross, WA, Australia;<br />
Nigel D. Phillips, Kennecott Exploration,<br />
Oro Valley, AZ; Nevan T. Pillay,<br />
Anglovaal Zambia Ltd., Kitwe, Zambia;<br />
Terence M. Porter, Porter Geoconsultancy<br />
Pty. Ltd., Linden Park, S. A., Australia;<br />
David T. Rohrs, Unocal Corporation,<br />
Santa Rosa, CA; Herbert Roesener, Anglo<br />
Gold, Karibib, Namibia; Kiko R. Sanchez<br />
B., Cia. Minera Oro Candente, Lima, Perú;<br />
Fenton Scott, Markland Resources,<br />
Toronto, ON, Canada; Michael P.<br />
Sheehan, Ivanhoe Mines, Arvada, CO;<br />
Arthur E. Smith, Jr., Houston, TX; Roric<br />
G. Smith, Anglogold Australia, Marmion,<br />
WA, Australia; W. Roger Smith, Midland,<br />
TX; Dirk J. Tempelman-Kluit,<br />
Vancouver, BC,<br />
to page<br />
Canada; Kazuyasu<br />
30 ...
30 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 29<br />
Candidates for <strong>SEG</strong> Fellowship (Continued)<br />
Tsuda, Mitsubishi Materials Natural<br />
Resources, Tokyo, Japan; Frank W. van<br />
der Stijl, Anglo American Int., Gaddede,<br />
Sweden; Peter J. Vanstone, Tantalum<br />
Mining Corporation <strong>of</strong> Canada Limited,<br />
Lac du Bonnet, MB, Canada; Mary-<br />
Carmen Vera, Wemindji Exploration,<br />
Inc., Wemindji, James Bay, QC, Canada;<br />
Vaughan Williams, Aurum Exploration<br />
Ltd., Navan, County Meath, Ireland; Peng<br />
Zhang, WMC Xinjiang Mineral Industry<br />
Service Company Ltd., Kunming, Yunnan,<br />
China; Mark R. Zwaschka, JBR<br />
Environmental Consultants, Spearfish, SD.<br />
The <strong>Society</strong> Welcomes<br />
The Following<br />
STUDENT1MEMBERS:<br />
Robert D. Aird, Imperial College, London,<br />
Great Britain; Murray M. Allan,<br />
University <strong>of</strong> Leeds, Leeds, Great Britain;<br />
Jason D. Babcock, The University <strong>of</strong> Utah,<br />
Salt Lake City, UT; Darcy E. L. Baker, The<br />
University <strong>of</strong> Newcastle, Newcastle, NSW,<br />
Australia; Robert C. Baylis, Imperial<br />
College, London, Great Britain; Jeffrey D.<br />
Boyce, The University <strong>of</strong> British Columbia,<br />
Vancouver, BC, Canada; Deborah L.<br />
Bryan, The University <strong>of</strong> Arizona, Tucson,<br />
AZ; Neil R. Burns, Queen’s University,<br />
Kingston, ON, Canada; Murtala I.<br />
Chindo, Imperial College, London, Great<br />
Britain; Carmen Conde, Instituto<br />
Geologico y Minero de Espana,<br />
Salamanca, Spain; Benjamin M.<br />
Costanza, Salem State College,<br />
Marblehead, MA; Jose J. Diaz,<br />
Northeastern Illinois University, Hickory<br />
Hills, IL; Carina J. Fearnley, Imperial<br />
College, London, Great Britain; Simon<br />
Gagne, Dalhousie University, Halifax, NS,<br />
Canada; Neven A. Georgiev, S<strong>of</strong>ia<br />
University St. Kliment Ohridski, S<strong>of</strong>ia,<br />
Bulgaria; Mark K. Goldie, Queen’s<br />
University, Kingston, ON, Canada;<br />
Tafadzwa E. S. Gomwe, Université du<br />
Québec à Chicoutimi, Chicoutimi, QC,<br />
Canada; Jesse C. Grady, University <strong>of</strong><br />
Nevada-Las Vegas, Las Vegas, NV;<br />
Melissa J. Gregory, Monash University,<br />
Melbourne, VIC, Australia; Paul<br />
Grevenitz, University <strong>of</strong> Wollongong, East<br />
Corrimal, NSW, Australia; M. D. R.<br />
Hassan, The University <strong>of</strong> Texas at<br />
Austin, Austin, TX; John G. Hinchey,<br />
Carleton University, Ottawa, ON, Canada;<br />
Alana M. Hinchey, Carleton University,<br />
Ottawa, ON, Canada; Alex James,<br />
Imperial College, London, Great Britain;<br />
Ajit Kumar, Queen’s University, Kingston,<br />
ON, Canada; Anna V. Lazarova, S<strong>of</strong>ia<br />
University St. Kliment Ohridski, S<strong>of</strong>ia,<br />
Bulgaria; Nathalie S. Lefebvre, The<br />
University <strong>of</strong> British Columbia,<br />
Vancouver, BC, Canada; Graham D.<br />
Lindsay, Imperial College, London, Great<br />
Britain; Petrus Llyambo, Imperial<br />
College, London, Great Britain; Catherine<br />
P. May, Imperial College, London, Great<br />
Britain; Jessica M. McPherson, University<br />
<strong>of</strong> Manitoba, Matlock, MB, Canada;<br />
Krista L. Monsen, Miami University,<br />
Liberty, IN; Alison S. Mote, The University<br />
<strong>of</strong> Texas at Austin, Austin, TX; Samuel A.<br />
Ndur, New Mexico Institute <strong>of</strong> Mining<br />
and Technology, Socorro, NM; Paulines<br />
C. Nwokolo, University <strong>of</strong> Nigeria,<br />
Nsukka, Enugu, Nigeria; Howard J.<br />
Ormonroyd, Imperial College, London,<br />
Great Britain; Carlos J. Paulino Rosa,<br />
University <strong>of</strong> Tasmania, Hobart, TAS,<br />
Australia; Luis A. Rivera, University <strong>of</strong><br />
Texas, Austin, TX; Tyler W. Ruks,<br />
Laurentian University, Sudbury, ON,<br />
Canada; Jamil A. Sader, The University <strong>of</strong><br />
Texas at Dallas, Dallas, TX; Alessandro<br />
Sandrin, Luleå University <strong>of</strong> Technology,<br />
Luleå, Sweden; Yvette S. Shiu,<br />
Northeastern Illinois University, Chicago,<br />
IL; Annette M. Smith, Illinois State<br />
University, Normal, IL; Xie-Yan Song, The<br />
University <strong>of</strong> Hong Kong, Hong Kong; E.<br />
John Stanner, Imperial College, London,<br />
Great Britain; William J. A. Stavast, The<br />
University <strong>of</strong> Arizona, Tucson, AZ; Fiona<br />
J. Stevens, University <strong>of</strong> The<br />
Witwatersrand, Johannesburg, South<br />
Africa; Barry St<strong>of</strong>fell, Imperial College,<br />
London, Great Britain; Sabina Strmic,<br />
University <strong>of</strong> Zagreb, Zagreb, Croatia;<br />
Xiwen Sun, The University <strong>of</strong> Utah, Salt<br />
Lake City, UT; Catherine Thiuierge, Ecole<br />
Polytechnique de Montreal, Longueuil,<br />
QC, Canada; Richard H. Tomlinson,<br />
Imperial College, London, Great Britain;<br />
Jessica Tr<strong>of</strong>imovs, Monash University,<br />
Melbourne, VIC, Australia; Johann<br />
Tuduri, Universite d’Orleans, Orleans,<br />
France; Raymond N. Umeh, Imperial<br />
College, London, Great Britain; Simon E.<br />
Van Der Wielen, The University <strong>of</strong><br />
Western Australia, Highbury, WA,<br />
Australia; Yan Wang, The University <strong>of</strong><br />
Hong Kong, Hong Kong; Zachary J.<br />
Wenz, University <strong>of</strong> Alaska Fairbanks,<br />
Fairbanks, AK; Kenneth Williamson,<br />
INRS-ETE, Quebec, QC, Canada; James C.<br />
Withall, Imperial College, London, Great<br />
Britain; Guangping Xu, Massachusetts<br />
Institute <strong>of</strong> Technology, Cambridge, MA;<br />
Rui Zhang, Queen’s University, Kingston,<br />
ON, Canada; Kuidong Zhao, Nanjing<br />
University, Nanjing, Jiangsu Province,<br />
China.1<br />
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APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 31<br />
<strong>SEG</strong>-GAC-MAC Joint Spring Meeting 2003<br />
Vancouver, British Columbia, May 25–28, 2003<br />
<strong>SEG</strong> Program Chair: Steve Rowins (<strong>SEG</strong> 1998 M), E-mail: srowins@eos.ubc.ca<br />
“Vancouver 2003 – On the Edge: Earth Science at North America’s Western Margin”<br />
The <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> (<strong>SEG</strong>), the Geological Association <strong>of</strong> Canada (GAC) and the Mineralogical Association <strong>of</strong><br />
Canada (MAC) invite you to live On the Edge for a few days this spring in Vancouver, British Columbia. The technical program<br />
will cover all major aspects <strong>of</strong> the earth sciences and emphasize the construction and evolution <strong>of</strong> the North American<br />
Cordillera and its geological resources. Six Symposia (SYMP) and 26 Special Sessions (SS) are planned, with many <strong>of</strong> the sessions<br />
<strong>of</strong> direct interest to the exploration and mining communities. Nine General Sessions (GS), 11 field trips, two Workshops (WS),<br />
and six Short Courses (SC), will round out the program. The parts <strong>of</strong> the technical program <strong>of</strong> special interest to <strong>SEG</strong> members<br />
are described below. Full details <strong>of</strong> the conference are available on the Vancouver 2003 website (www.vancouver2003.com). I<br />
look forward to seeing you all in Vancouver!<br />
SYMP2.<br />
SUSTAINABLE DEVELOPMENT IN<br />
THE MINERAL RESOURCES SECTOR:<br />
AN OXYMORON OR GOLDEN<br />
OPPORTUNITY?<br />
Jeremy Richards<br />
(Jeremy.Richards@UAlberta.CA)<br />
Sustainability is the buzzword <strong>of</strong> the<br />
nascent millennium, but has widely different<br />
meanings depending on the perspective<br />
<strong>of</strong> the user. The apparent<br />
incompatibility <strong>of</strong> this term with mining<br />
is resolved when defined within the<br />
context <strong>of</strong> the Brundtland Report, which<br />
allows the needs <strong>of</strong> the present generation<br />
to be met (sustained) but not at the<br />
expense <strong>of</strong> future generations. The challenge,<br />
therefore, is to design and implement<br />
resource development strategies<br />
that impact minimally or positively on<br />
affected environments and communities,<br />
both in the short and long terms.<br />
This symposium will highlight examples<br />
<strong>of</strong> sound development practice,<br />
examine cases <strong>of</strong> past bad practice and<br />
its consequences, and explore new<br />
approaches and concepts that can help<br />
shape future development strategies.<br />
PLEASE NOTE:<br />
SYMPOSIA AND SPECIAL SESSIONS<br />
SYMP3.<br />
METALS IN THE ENVIRONMENT<br />
John Jambor (jLjambor@aol.com)<br />
SS4.<br />
ENVIRONMENTAL STUDIES<br />
OF MINE WASTES<br />
Leslie Smith (Lsmith@eos.ubc.ca)<br />
SS6.<br />
WEST COAST OFFSHORE OIL<br />
AND GAS DEVELOPMENT:<br />
ISSUES, PERSPECTIVES AND<br />
RESPONSIBILITIES<br />
Christopher Barnes<br />
(cbarnes@uvic.ca) and Michael J.<br />
Whiticar (whiticar@uvic.ca)<br />
SS7.<br />
BEAUFORT-MACKENZIE REGION:<br />
NIGER OF THE NORTH? UNLOCK-<br />
ING THE RESOURCE POTENTIAL<br />
OF THE NORTHERN EDGE OF THE<br />
CANADIAN CORDILLERA<br />
Larry S. Lane (Llane@nrcan.gc.ca)<br />
and Dennis H. Johnston<br />
(Dennis.Johnston@devoncanada.com)<br />
The joint luncheon between the <strong>SEG</strong> and the<br />
Geological Association <strong>of</strong> Canada’s Mineral Deposits<br />
Division (GAC-MDD)<br />
is on<br />
Wednesday, May 28, 2003.<br />
The cost is $<strong>45</strong>CDN.<br />
Further details on the conference website.<br />
Joint <strong>SEG</strong> Council –<br />
Foundation Strategic<br />
Planning Meeting<br />
on Saturday, May 24th.<br />
SS8.<br />
REACTIVATION TECTONICS IN<br />
THE CORDILLERAN FOOTHILLS:<br />
GLIMPSES OF THE PAST,<br />
$IGNIFICANCE FOR THE FUTURE<br />
Larry S. Lane (Llane@nrcan.gc.ca)<br />
and Glen S. Stockmal<br />
(gstockma@nrcan.gc.ca)<br />
SS9.<br />
MASSIVE SULPHIDES ON THE EDGE:<br />
THE FORMATION OF VMS AND<br />
SEDEX DEPOSITS WITHIN EVOLV-<br />
ING CONTINENTAL MARGINS<br />
Steve Piercey (spiercey@nickel.<br />
laurentian.ca) and Jim Mortensen<br />
(jmortensen@eos.ubc.ca)<br />
Continental margin arc, back-arc, and<br />
rift geodynamic environments host<br />
some <strong>of</strong> the world’s largest volcanogenic<br />
massive sulphide (VMS) and<br />
sedimentary exhalative (SEDEX) Zn-Pb-<br />
Cu deposits (e.g., Brunswick #12, Neves<br />
Corvo). The session is aimed at addressing<br />
recent ideas regarding the setting<br />
and origin <strong>of</strong> base-metal deposits within<br />
evolving continental margin settings.<br />
The session is open to all aspects <strong>of</strong> continent-margin<br />
massive sulphide<br />
deposits, including, but not necessarily<br />
limited to: regional tectonics and structural<br />
controls on deposit localization;<br />
petrology <strong>of</strong> associated<br />
volcanic,<br />
32 to page ...
32 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 31<br />
<strong>SEG</strong>-GAC-MAC Joint Spring Meeting 2003 (Continued)<br />
ANNOUNCEMENTS<br />
plutonic rocks and sedimentary rocks;<br />
new deposit and camp descriptions;<br />
regional semi-conformable to depositscale<br />
hydrothermal alteration; metal<br />
and fluid source tracing; timing <strong>of</strong> massive<br />
sulphide events; and models for ore<br />
deposition and genesis. Attendees interested<br />
in this session also will be<br />
attracted to field trips A1 and A2.<br />
SS10.<br />
TECTONIC CONTROLS ON PALEO-<br />
PROTEROZOIC MINERALIZATION<br />
Chris Beaumont-Smith<br />
(cbeaumont@gov.mb.ca),<br />
Alan Bailes (abailes@gov.mb.ca) and<br />
Alan Galley (agalley@NRCan.gc.ca)<br />
The Paleoproterozoic is one <strong>of</strong> the most<br />
prolific periods <strong>of</strong> early Earth history for<br />
production <strong>of</strong> base metal and gold mineralization.<br />
This session will present<br />
studies by researchers and explorationists<br />
on the setting and control <strong>of</strong> deposits<br />
formed during this important period<br />
including lode gold, volcanogenic massive<br />
Cu-Zn-Au sulphide, Olympic Damtype<br />
Cu-Au mineralization, and cratonmargin<br />
nickel and PGE mineralization.<br />
All aspects <strong>of</strong> these deposits will be considered<br />
including mine-scale studies,<br />
research into geological controls <strong>of</strong><br />
mineralization in individual mining<br />
areas, and studies emphasizing regionalscale<br />
tectonic-metallogenic controls.<br />
Attendees interested in this session also<br />
will be attracted to short course SC2 and<br />
field trips A1, A2, B1, and B2.<br />
SS11.<br />
GEM MATERIALS AND<br />
MINERALOGY<br />
Lee A. Groat (lgroat@eos.ubc.ca)<br />
SS12.<br />
APPLICATIONS OF GEOPHYSICAL<br />
INVERSION FOR MINERAL<br />
EXPLORATION: CURRENT STATUS<br />
AND VISION FOR THE FUTURE<br />
Douglas Oldenburg<br />
(doldenburg@eos.ubc.ca) and<br />
John McGaughey (johnm@<br />
mirageoscience.com)<br />
The last decade has seen large-scale<br />
advances in our ability to generate 3D<br />
physical property images <strong>of</strong> the Earth<br />
by inverting data from different geophysical<br />
surveys. With advanced visualization<br />
tools, these inversions allow new<br />
understanding about the geology at<br />
both regional and deposit scales. Today,<br />
geophysical inversions are carried out<br />
routinely by many companies and the<br />
inversions have been effective in finding<br />
mineral deposits and in reducing exploration<br />
costs. This session focuses on case<br />
histories that illuminate the impact that<br />
inversions have had on mineral exploration<br />
programs and also present a<br />
vision for future capabilities. Attendees<br />
interested in this session also will be<br />
attracted to the <strong>SEG</strong> workshop (WS1)<br />
Understanding Geophysical Inversions for<br />
Mineral Exploration.<br />
SS13.<br />
CANADIAN DIAMOND DEPOSITS:<br />
HISTORY AND TECHNIQUES<br />
OF THEIR DISCOVERY –<br />
A TRIBUTE TO HUGO DUMMETT<br />
Felix Kaminsky<br />
(felixvkaminsky@cs.com)<br />
and Donald K. Mustard<br />
(amustard@attcanada.net)<br />
The past decade has seen Canada move<br />
into the select ranks <strong>of</strong> diamond producing<br />
nations. This session consists <strong>of</strong><br />
contributions on all aspects <strong>of</strong> diamond<br />
exploration especially the research techniques<br />
employed in their discovery. The<br />
session is focused on the Canadian diamond<br />
scene, but contributions on diamond<br />
deposits from other geographical<br />
regions are considered. The session is a<br />
tribute to the late <strong>SEG</strong> president Hugo<br />
Dummett, a pioneer in diamond exploration<br />
and mine development in Canada.<br />
Attendees interested in this session also<br />
will be attracted to the <strong>SEG</strong> workshop<br />
(WS1) Understanding Geophysical<br />
Inversions for Mineral Exploration.<br />
SS14.<br />
NEW PERSPECTIVES ON THE<br />
EVOLUTION OF THE PLATINUM<br />
GROUP ELEMENTS IN MAGMAS<br />
AND ORE DEPOSITS<br />
James Scoates (jscoates@eos.ubc.ca)<br />
and David Peck<br />
(dpeck@angloamerican.ca)<br />
This special session brings together specialists<br />
in the mineralogy and geochemistry<br />
<strong>of</strong> platinum group elements (PGE)<br />
and geologists who study the field and<br />
structural aspects <strong>of</strong> PGE mineralization<br />
to address advances in our understanding<br />
<strong>of</strong> PGE evolution in magmas and<br />
ore deposits. Some <strong>of</strong> the areas <strong>of</strong><br />
progress in recent years include:<br />
increasingly sensitive analytical techniques<br />
for PGE, the recognition <strong>of</strong><br />
dynamic processes as important for PGE<br />
mineralization, and the development <strong>of</strong><br />
sophisticated physical and chemical<br />
models for PGE variations in basaltic to<br />
komatiitic magmas. Contributions<br />
related to these and other aspects <strong>of</strong><br />
magmatic PGE evolution and mineralization<br />
are considered. Attendees interested<br />
in this session also will be<br />
attracted to short course SC2 and field<br />
trip B2.<br />
SS15.<br />
ORE-FORMING PROCESSES IN THE<br />
PORPHYRY COPPER (GOLD) AND<br />
EPITHERMAL GOLD ENVIRONMENTS:<br />
WHAT DO WE REALLY KNOW?<br />
Stephen Rowins (srowins@eos.ubc.ca)<br />
and Anthony Williams-Jones<br />
(willyj@eps.mcgill.ca)<br />
It has become increasingly apparent<br />
that both high- and low-sulphidation<br />
epithermal gold deposits are, in many<br />
cases, genetically related to large porphyry<br />
copper-gold systems. These<br />
genetic linkages, however, are incompletely<br />
understood - a point underscored<br />
by the recent flood <strong>of</strong> analytical, experimental,<br />
theoretical, and field studies<br />
which call into question many <strong>of</strong> the<br />
assumptions commonly held regarding<br />
ore-forming processes in the porphyryepithermal<br />
environment. This special<br />
session highlights analytical, theoretical,<br />
experimental and field investigations<br />
<strong>of</strong> the mobility, transport, deposition,<br />
and source <strong>of</strong> metals in the<br />
porphyry-epithermal environment.<br />
Attendees interested in this session also<br />
will be attracted to short courses SC1<br />
and SC2 and field trips A2 and B1.<br />
SS16.<br />
CUTTING EDGE EXPLORATION<br />
TECHNIQUES FOR CONCEALED<br />
ORE DEPOSITS<br />
Ron Britten<br />
(rbritten@firstpointminerals.com)<br />
and Dick Tosdal (rtosdal@eos.ubc.ca)<br />
The discovery <strong>of</strong> new mineral deposits is<br />
becoming more challenging as near<br />
surface deposits are depleted. This<br />
session highlights exploration techniques<br />
that encompass various disciplines<br />
including geology, geochemistry,<br />
geophysics, and computer-aided visualization,<br />
which aid in the search for
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 33<br />
concealed deposits at all stages <strong>of</strong><br />
exploration from the grassroots to the<br />
established mining camp environment.<br />
Techniques that integrate various disciplines<br />
in a fashion that permits easy<br />
use in exploration are <strong>of</strong> particular<br />
interest. A discussion <strong>of</strong> the practical<br />
application <strong>of</strong> the method, case histories<br />
and where applicable, costs<br />
involved, is included. Attendees interested<br />
in this session also will be<br />
attracted to the <strong>SEG</strong> workshop (WK1)<br />
Understanding Geophysical Inversions for<br />
Mineral Exploration, short course SC2,<br />
and field trip A2.<br />
SS20.<br />
THE APPLICATION OF FLUID<br />
AND MELT INCLUSIONS TO<br />
UNDERSTANDING<br />
GEOLOGICAL PROCESSES<br />
Iain Samson (ims@uwindsor.ca) and<br />
Alan J. Anderson (aanderso@stfx.ca)<br />
SS21.<br />
NEW ANALYTICAL DEVELOPMENTS<br />
IN ISOTOPE GEOCHEMISTRY<br />
Dominique Weis (dweis@eos.ubc.ca)<br />
and James Mortensen<br />
(jmortensen@eos.ubc.ca)<br />
This session will focus on papers and<br />
discussions <strong>of</strong> recent advances in isotopic<br />
ratio analyses by multi-collector<br />
inductively coupled plasma mass spectrometry<br />
(MC-ICP-MS) and high precision<br />
thermo-ionization mass spectrometry<br />
(TIMS). Applications cover the field<br />
<strong>of</strong> earth sciences, oceanography, environmental<br />
studies and geobiology.<br />
Topics that can be addressed (but are<br />
not limited to) include: new or<br />
improved methods <strong>of</strong> isotopic analysis<br />
using multicollector ICP-MS, (negative<br />
ion) TIMS; comparative studies <strong>of</strong> isotopic<br />
analysis and critical evaluations<br />
<strong>of</strong> MC-ICP-MS techniques; and spatial<br />
resolution (laser ablation) and stepwise<br />
release techniques in geochronology.<br />
SS23.<br />
PALEOZOIC EVOLUTION AND<br />
METALLOGENY OF PERICRATONIC<br />
TERRANES AT THE ANCIENT<br />
PACIFIC MARGIN OF<br />
NORTH AMERICA<br />
JoAnne Nelson<br />
(joanne.nelson@gems1.gov.bc.ca),<br />
Maurice Colpron<br />
(maurice.colpron@gov.yk.ca)<br />
and Bob Thompson<br />
(bthompson@NRCan.gc.ca)<br />
GENERAL SESSIONS<br />
Although there are a large number <strong>of</strong><br />
Symposia and Special Sessions, General<br />
Sessions will be an important part <strong>of</strong><br />
the meeting. General Sessions <strong>of</strong> particular<br />
interest to <strong>SEG</strong> members include<br />
<strong>Economic</strong> Geology (GS02); Isotope<br />
Geology and Geochronology (GS10);<br />
Petrology (Igneous, Metamorphic) and<br />
Volcanology (GS14); Precambrian<br />
Geology (GS15); and Structural Geology<br />
and Tectonics (GS18).<br />
WORKSHOPS (WS)<br />
WS 1.<br />
<strong>SEG</strong> WORKSHOP: UNDERSTANDING<br />
GEOPHYSICAL INVERSIONS FOR<br />
MINERAL EXPLORATION<br />
Organizers: Douglas Oldenburg<br />
(doldenburg@eos.ubc.ca) and Francis<br />
Jones (fjones@eos.ubc.ca); The<br />
University <strong>of</strong> British Columbia –<br />
Geophysical Inversion Facility<br />
In the last decade it has become possible<br />
to invert nearly all types <strong>of</strong> geophysical<br />
survey data to obtain 3D images <strong>of</strong><br />
physical properties. These results have<br />
been exceedingly valuable in helping<br />
answer a variety <strong>of</strong> questions in the<br />
geosciences. In this workshop we present<br />
the basic concepts <strong>of</strong> geophysical<br />
inversion put into the context <strong>of</strong> mineral<br />
exploration. Mathematical details<br />
are minimized and our goal is to help<br />
explorationists understand how the<br />
images have been obtained and how<br />
they can be used in interpretation. Case<br />
histories, where numerous types <strong>of</strong> geophysical<br />
data over a particular deposit<br />
are inverted, provide a unifying theme<br />
for our presentation. Answering geologic<br />
questions at the regional and<br />
deposit scale leads naturally to the use<br />
<strong>of</strong> various geophysical surveys, and<br />
throughout the day we will consider<br />
magnetic, gravity, dc resistivity, IP and<br />
electromagnetic data sets. For each <strong>of</strong><br />
these we outline the basic principles <strong>of</strong><br />
the geophysical survey, show how the<br />
data can be inverted, and show the<br />
impact in answering the geologic questions.<br />
The workshop will conclude with<br />
a vision for the future and a discussion<br />
period. The linked special session SS12<br />
further explores these issues.<br />
Date: May 25, 2003 (Preconference).<br />
Cost: $150CDN.<br />
SHORT COURSES (SC)<br />
SC 1.<br />
MAC SHORT COURSE: THE<br />
ANALYSIS AND INTERPRETATION<br />
OF FLUID INCLUSIONS<br />
Organizers: Iain Samson<br />
(ims@uwindsor.ca),<br />
Alan Anderson (aanderso@stfx.ca)<br />
and Dan Marshall (marshall@sfu.ca)<br />
Date: May 24-25, 2003 (Preconference).<br />
Cost: $290CDN.<br />
SC 2.<br />
GAC-MDD and MDRU SHORT<br />
COURSE: ALKALINE Cu-Au<br />
PORPHYRIES AND Fe-OXIDE<br />
Cu-Au DEPOSITS: DISTINCT<br />
DEPOSIT TYPES, A CONTINUUM<br />
OR GENETIC LINKAGE?<br />
Organizers: Dick Tosdal<br />
(rtostal@eos.ubc.ca), Moira Smith<br />
(moira.smith@teckcominco.com),<br />
and Murray Hitzman<br />
(mhitzman@mines.edu)<br />
Date: May 24-25, 2003 (Preconference).<br />
Cost: $350CDN.<br />
SC 4.<br />
MAC SHORT COURSE:<br />
ENVIRONMENTAL ASPECTS<br />
OF MINE WASTES<br />
Organizers: John L. Jambor<br />
(jLjambor@aol.com),<br />
David Blowes, and Ian Ritchie.<br />
Date: May 24-25, 2003 (Preconference).<br />
Cost: $350CDN.<br />
FIELD TRIPS<br />
PRECONFERENCE FIELD TRIPS<br />
A1.<br />
VOLCANOGENIC MASSIVE<br />
SULPHIDE DEPOSITS AT MYRA<br />
FALLS, VANCOUVER ISLAND<br />
Organizers: Albert Chong, Finley<br />
Bakker and other Boliden-Westmin<br />
mine staff and Robert Pinsent<br />
Two-day field trip to visit the Myra Falls<br />
Mine located on Vancouver Island. The<br />
Boliden-Westmin operation is mining<br />
polymetallic volcanogenic massive sulphide<br />
deposits hosted by the Sicker<br />
Group volcanics. The visit will include<br />
an underground mine tour and examination<br />
<strong>of</strong> drill core.<br />
Trip fee: $295CDN<br />
Date: May 24-25, 2003<br />
Capacity: 10 to 28<br />
to page 34 ...<br />
ANNOUNCEMENTS
34 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
... from 33<br />
<strong>SEG</strong>-GAC-MAC Joint Spring Meeting 2003 (Continued)<br />
ANNOUNCEMENTS<br />
A2.<br />
CORDILLERAN ORE DEPOSITS<br />
FIELD TRIP<br />
Organizers: Trygve Höy and<br />
Dave Lefebure<br />
(dave.lefebure@gems8.gov.bc.ca)<br />
and mine geologists<br />
Visit a variety <strong>of</strong> mineral deposits<br />
hosted by Cordilleran sedimentary<br />
rocks, including sedex, Irish, Mississippi<br />
Valley, vein, skarn and manto types.<br />
Informal discussions and presentations<br />
will review many aspects <strong>of</strong> the deposits,<br />
such as their genesis, key exploration<br />
characteristics and tectonic setting. The<br />
field trip will cover much <strong>of</strong> southeastern<br />
British Columbia and parts <strong>of</strong><br />
northern Washington State including<br />
stops at significant past producers.<br />
Trip fee: $707CDN<br />
Date: May 21-25, 2003<br />
Capacity: 10 to 20<br />
A3.<br />
CORDILLERAN CROSS SECTION:<br />
CALGARY TO VANCOUVER<br />
Organizers: Jim Monger<br />
(jmonger@NRCan.gc.ca) and<br />
Ray Price<br />
A repeat <strong>of</strong> the popular field trip to<br />
examine the stratigraphy, structure and<br />
tectonic history <strong>of</strong> the southern<br />
Canadian Cordillera. The field trip combines<br />
surface geology with results<br />
mainly from the southern Cordilleran<br />
Lithoprobe transect to examine evidence<br />
bearing on evolution <strong>of</strong> this<br />
accretionary orogen, with its implications<br />
for the origin and growth <strong>of</strong> new<br />
continental crust. On the first day, we<br />
cross the Foreland Belt with its classical<br />
fold and thrust structures and the<br />
Omineca Belt, which is the region <strong>of</strong><br />
tectonic overlap between the accreted<br />
terranes and craton margin deposits,<br />
and explore the relationship between<br />
initiation in Jurassic time <strong>of</strong> deformation<br />
leading to the present Cordillera<br />
and its termination in the Tertiary. On<br />
the second day, we will examine late<br />
Paleozoic and early Mesozoic island arc<br />
and subduction complex terranes in the<br />
Intermontane Belt that were accreted in<br />
the Jurassic to Precambrian through<br />
early Mesozoic strata deposited near the<br />
North American craton margin. On the<br />
last day, we will cross the Coast Belt,<br />
given integrity by events during and following<br />
Cretaceous accretion <strong>of</strong> Insular<br />
Superterrane to previously accreted terranes.<br />
The trip will not involve hikes<br />
away from the bus, although some road<br />
cuts examined will be up to 0.5 km long.<br />
Trip fee: $637CDN<br />
Date: May 23-25, 2003<br />
Capacity: <strong>45</strong><br />
POST-CONFERENCE<br />
FIELD TRIPS<br />
B1.<br />
HIGHLAND VALLEY PORPHYRY<br />
COPPER DEPOSITS<br />
Organizers: W.J. McMillan and<br />
Mike Cathro<br />
(mike.cathro@gems2.gov.bc.ca)<br />
This two-day field trip will visit the<br />
Valley Copper and Lornex open pits to<br />
examine these classic porphyry deposits<br />
and examine the various phases <strong>of</strong> the<br />
host Guichon Batholith. Don’t miss this<br />
chance to visit the world’s third largest<br />
copper mine and one <strong>of</strong> the most efficient<br />
mining operations in the world.<br />
Trip fee: $198CDN<br />
Date: May 28-29, 2003<br />
Capacity: 10 to 40<br />
B2.<br />
PGE ENVIRONMENTS IN THE<br />
CORDILLERA<br />
Organizers: Graham Nixon<br />
(graham.nixon@gems8.gov.bc.ca),<br />
Robert Pinsent and Mike Cathro<br />
(mike.cathro@gems2.gov.bc.ca)<br />
A three to four day field trip visiting<br />
Alaskan and Alkaline intrusive complexes<br />
with associated platinum group<br />
element mineralization in southern<br />
British Columbia, including the<br />
Tulameen, Allandale, Sappho and<br />
Averill areas. Field trip will visit known<br />
mineral occurrences and examine their<br />
relationship to the host intrusive rocks.<br />
Trip fee: $418CDN<br />
Date: May 28-31, 2003<br />
Capacity: 10 to 20 1<br />
PUBLICATIONS OF INTEREST<br />
(Note: not available through <strong>SEG</strong> or Sheahan:<br />
Please order directly from the source, provided below)<br />
Patricia Sheahan (consultant to MDRU-UBC)<br />
44 Gemini Rd. Toronto, Ontario Canada M2K 2G6<br />
Tel. +416.223.7750 Fax +416.223.4229<br />
E-mail: konsult@compuserve.com<br />
•••••••••••••••••••••••••••••••••••••••••••<br />
■ Recent Developments in Exploration and Mining in Northern Ontario. PGE Roby<br />
Zone; Gold Red Lake Mine, Pd Legris Lake, Cu-PGE Two Duck Lake, Diamond<br />
Victor Kimberlite, Phosphate Cargill, Tantalum, PGE Copper Nickel Copper Cliff ,<br />
Sudbury Igneous Complex. Exploration and Mining Geology Volume 10,1-2, 2001<br />
(pub. 2002), Canadian Institute Mining, Metallurgy. Web-site: < www.cim.org>.<br />
Single Issue CDN$40.00, US$27.00. Accept Visa.<br />
■ The Timing and Location <strong>of</strong> Major Ore Deposits in an Evolving Orogen.<br />
D.J. Blundell, F. Neubauer, A. Von Quadt, 2002. 400 p. Geological <strong>Society</strong> <strong>of</strong> London<br />
Publishing House, Special Publication 204, $142.00. Web-site: .<br />
Accept Visa.<br />
■ Applied Mineral Inventory Estimation. A.J. Sinclair, 2002 . 640 p. Blackwell<br />
Publishing. Web-site: . US$110.00. Accept Visa.<br />
■ Kimberlites, Orangeites, Lamproites, Melilitites and Minettes: A Petrographic<br />
Atlas. R.H. Mitchell, 1998, (color). Almaz Press Inc., web-site:<br />
or E-mail: . US$100.00.<br />
■ Giant Ore Deposits: Characteristics, Genesis and Alteration. Three-day workshop<br />
held June 2002. 269 p. University <strong>of</strong> Tasmania CODES Special Publication 4,<br />
E-mail: . Aus$90.00. 1
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 35<br />
A N N O U N C E M E N T<br />
<strong>SEG</strong><br />
WORKSHOP<br />
W1<br />
UNDERSTANDING GEOPHYSICAL<br />
INVERSIONS FOR MINERAL EXPLORATION<br />
May 25, 2003<br />
Instructors: Douglas Oldenburg and Francis Jones<br />
The University <strong>of</strong> British Columbia – Geophysical Inversion Facility<br />
This workshop will be held preconference in Vancouver, BC (<strong>SEG</strong>-GAC-MAC Joint Spring Meeting).<br />
<strong>Geologists</strong> and geophysicists are routinely confronted with 3-D images <strong>of</strong> physical properties that have been<br />
obtained by inverting geophysical survey data. These images have played an important role in discovering new deposits<br />
or defining existing ones. This workshop is for anyone who may expect to have to work with such information. The workshop’s<br />
goal is provide participants with a firm understanding <strong>of</strong> how the 3-D images were obtained and how they can be<br />
used in interpretation. Mathematical details are minimized, and case histories involving numerous types <strong>of</strong> geophysical<br />
data will provide a unifying theme. The need to answer geologic questions at regional scales and at deposit scales leads<br />
naturally to the use <strong>of</strong> various geophysical surveys. Therefore, we will consider magnetic, gravity, DC resistivity, IP and<br />
electromagnetic data sets. For each <strong>of</strong> these we will first show how the data can be inverted. Then we will discuss how to<br />
maximize the impact these results can have on solutions to geologic questions. The workshop will include guided discussions,<br />
and an outline <strong>of</strong> expectations for future developments. The linked session SS12 and SS16 further explores these<br />
issues.<br />
For more information, contact Francis H.M. Jones, M.Sc. P.Eng., UBC Department <strong>of</strong> Earth & Ocean Sciences,<br />
6339 Stores Road, Vancouver, BC, V6T 1Z4; Tel. 604.822.2138; Fax 604.822.6088; E-mail: fjones@eos.ubc.ca;<br />
Website: <br />
32nd International<br />
Geological Congress<br />
Florence, Italy<br />
August 20-28, 2004<br />
A Symposium on<br />
Hydrothermal Mineralization on<br />
Sediment-Covered Ridges<br />
Conveners: James M. Franklin and Randolph A. Koski<br />
Abstracts <strong>of</strong> presentations that describe recent or<br />
current research on all aspects <strong>of</strong> hydrothermal<br />
mineralization at sediment-covered ridge axes are<br />
invited; formats are oral presentations<br />
(morning session) or posters (afternoon session).<br />
Abstract deadline: late November 2003.<br />
View the first circular at: .<br />
For further information and<br />
expression <strong>of</strong> interest, contact:<br />
• Jim Franklin (jfranklin4@compuserve.com)<br />
• Randy Koski (rkoski@usgs.gov)<br />
Australasia/Oceania <strong>SEG</strong><br />
Lotto Winner<br />
<br />
The winner <strong>of</strong> the Australasia/Oceania<br />
<strong>SEG</strong> Lotto drawing is Robert J. Gunthorpe<br />
<strong>of</strong> Flagstaff Hill, South Australia.<br />
Bob wins a free registration and<br />
return airfare to the<br />
<strong>SEG</strong> 2004 Conference “Prospective<br />
Mineral Discovery Under Cover” in Perth,<br />
September 27–30, 2004. <strong>SEG</strong> members<br />
living in Australasia who sponsored a<br />
regular new member from the Region<br />
during 2002 were entered in the drawing.<br />
ANNOUNCEMENTS
36 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
NOW AVAILABLE!<br />
On-line Journal Access<br />
The <strong>Economic</strong> Geology journal is now on-line<br />
for <strong>SEG</strong> members, who can subscribe to this<br />
additional service via the <strong>SEG</strong> secure server.<br />
Cost is US$10 per membership year.<br />
As <strong>SEG</strong> gold members, those who sign up will<br />
have full access starting with the first issue <strong>of</strong><br />
the 2003 volume (98:1).<br />
To subscribe, go to <strong>SEG</strong> Homepage<br />
and click on Go Gold:<br />
On-line Access to Journal Articles.<br />
Logging in requires your membership number.<br />
At the on-line dues payment screen, tick the<br />
Go Gold box and fill in the credit card<br />
information at the bottom <strong>of</strong> the page.<br />
ANNOUNCEMENTS<br />
SYMPOSIUM:<br />
CALL FOR PAPERS P<br />
AND POSTERS<br />
Exploring for Tethyan Ores: Development from historic roots<br />
Organized by the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong><br />
August 24–28, 2003<br />
The Tethyan metallogenetic belt has been intensively explored since the dawn <strong>of</strong> civilization. Despite thousands<br />
<strong>of</strong> years <strong>of</strong> mining in various parts <strong>of</strong> this belt, new discoveries <strong>of</strong> important orebodies are continuing, even in old<br />
mining districts. Reconstruction <strong>of</strong> the complex geodynamic evolution <strong>of</strong> this belt is a key factor in the exploration for<br />
ores. The tremendous amount <strong>of</strong> knowledge accumulated during the long history <strong>of</strong> mining, combined with new<br />
results from academic and industry research, is leading to new syntheses.<br />
This symposium aims to review the present state <strong>of</strong> our understanding about Tethyan metallogeny, highlight new<br />
achievements related to mineral exploration in the belt, and trigger an exchange <strong>of</strong> ideas between academic and industry<br />
experts. Keynote lectures will focus on the geodynamic evolution and economic geology <strong>of</strong> the western half <strong>of</strong> the<br />
Tethyan orogenic belt that stretches from Iran to Central Europe. This region has experienced renewed exploration<br />
interest during the past decade, with several important discoveries.<br />
Oral and poster presentations on the following topics are welcome:<br />
• The plate tectonic aspects <strong>of</strong> ore formation,<br />
• Case studies describing new deposits within their tectonic setting, and<br />
• Exploration in old mining districts as well as new target areas.<br />
In conjunction with the theme <strong>of</strong> this symposium a post-conference field trip is being considered to the<br />
Cretaceous deposits <strong>of</strong> the Srednogorie zone in Bulgaria. This trip will visit working porphyry and epithermal mines<br />
as well as other deposits.<br />
For further information please contact: Ferenc Molnár at the Department <strong>of</strong> Mineralogy, Eötvös Loránd University,<br />
Budapest, Pázmány Péter s. 1/C, 1117 Hungary; Fax: 36 1 381 2110; e-mail: molnar@abyss.elte.hu; or visit the <strong>SEG</strong><br />
website: .
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 37<br />
Call for Nominations for <strong>SEG</strong> Traveling Lecturers<br />
International Exchange Lecturer<br />
Thayer Lindsley Visiting Lecturer<br />
Regional Vice-President Lecturer<br />
Nominations for <strong>SEG</strong> Traveling lecturers are invited.<br />
International Exchange lecturers present at sites selected for greatest involvement <strong>of</strong> industry, academic,<br />
and government geologists. Thayer Lindsley lecturers visit colleges and universities.<br />
Regional Vice-President lecturers mainly present within one or more <strong>of</strong> the <strong>SEG</strong> global regions.<br />
Travel support is provided by <strong>SEG</strong> for those who are chosen.<br />
To be selected, nominees must (1) have widely recognized expertise in a field <strong>of</strong> economic geology;<br />
(2) have known competence as a public speaker; and (3) be able to represent <strong>SEG</strong> as an enthusiastic<br />
and effective ambassador.<br />
Nominations can be made to the Chair <strong>of</strong> the relevant selection subcommittee (International<br />
Exchange: Steve Garwin, sgarwin@q-net.net.au; Thayer Lindsley: Jamie Wilkinson, J.Wilkinson@ic.ac.uk;<br />
Regional Vice-President: Noel White, white.noel@bigpond.com); or to Christine Horrigan at <strong>SEG</strong><br />
Headquarters (christinehorrigan@segweb.org). Nominations should include a description <strong>of</strong> less than 300<br />
words that specifies the nominee’s area <strong>of</strong> expertise and justifies his/her capabilities with cited examples<br />
<strong>of</strong> excellence in lecturing.<br />
Nominations must be received no later than June 30, 2003.<br />
Call for Nominations –<br />
Lindgren Award for 2004<br />
DEADLINE: AUGUST 31, 2003<br />
The <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> is soliciting nominations for the<br />
2004 Lindgren Award. The Lindgren Award is <strong>of</strong>fered annually to a geologist<br />
whose published research represents an outstanding contribution<br />
to economic geology. The contribution shall be measured by consideration<br />
<strong>of</strong> one to three papers published by age 35. The recipient must be<br />
less than 37 years <strong>of</strong> age on January 1 <strong>of</strong> the year in which the award is<br />
presented. The award shall not be restricted as to the candidate’s<br />
nationality, place <strong>of</strong> employment, or membership in the <strong>Society</strong>.<br />
The deadline for submitting nominations is August 31, 2003. The nomination<br />
should include the following: (1) the name, date and location <strong>of</strong><br />
birth, education and pr<strong>of</strong>essional affiliation <strong>of</strong> the candidate; (2)<br />
Citation(s) <strong>of</strong> publication(s) for which the award is to be made (note<br />
critical papers and provide reprints, if possible), and other published<br />
works; (3) A brief statement explaining the significance <strong>of</strong> the research,<br />
to include its pertinence to economic geology, its demonstrated effects,<br />
the originality and creativity shown in the research. the clarity <strong>of</strong> presentation,<br />
and its impact on scientific theory or technology.<br />
Nominations should be sent,<br />
preferably in electronic format via e-mail, to:<br />
Dr. Jeremy P. Richards, Dept. Earth and Atmospheric Sciences<br />
University <strong>of</strong> Alberta, Edmonton, Alberta, Canada, T6G 2E3<br />
Tel: (780) 492-3430 Fax: (780) 492-2030<br />
E-mail: Jeremy.Richards@ualberta.ca<br />
2003<br />
Call for Nominations<br />
for Penrose and <strong>SEG</strong> Silver<br />
Medals and Marsden<br />
Award<br />
Nominations for the <strong>Society</strong>’s Penrose Gold<br />
and Silver Medals and the Marsden Award<br />
are due by September 1, 2003, for review by<br />
the <strong>SEG</strong> Council. Members and Fellows <strong>of</strong><br />
the <strong>Society</strong> are urged to participate in this<br />
important process by nominating outstanding<br />
candidates for these prestigious<br />
honors.<br />
••••• How To Nominate •••••<br />
The <strong>SEG</strong> award nomination form may be<br />
obtained from the <strong>SEG</strong> website. Go to<br />
and click on the<br />
“Forms” button; then click on the “Award<br />
Nominations” to download the PDF form.<br />
If you do not have access to our website,<br />
you may request a copy <strong>of</strong> the nomination<br />
form from <strong>SEG</strong> Headquarters.<br />
ANNOUNCEMENTS
38 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
B1 Cretaceous Porphyry-Epithermal<br />
Systems <strong>of</strong> the Srednogorje Zone,<br />
Bulgaria<br />
ANNOUNCEMENTS<br />
A Special Issue <strong>of</strong> the<br />
Journal <strong>of</strong> Exploration and Mining Geology<br />
on<br />
ANCIENT AND MODERN<br />
SEAFLOOR VOLCANOGENIC<br />
MASSIVE SULFIDE DEPOSITS<br />
Peter A. Rona and Zengqian Hou, Guest Editors<br />
A special double issue <strong>of</strong> the journal, Exploration and Mining<br />
Geology, was published on March 21, 2001 (backdated<br />
Volume 8, Numbers 3 and 4, July and October 1999), dedicated<br />
to the memory <strong>of</strong> the eminent Russian ocean ridge geologist<br />
Sergey Krasnov (1952-1996). The special issue accesses<br />
for the first time new Chinese work on volcanogenic massive<br />
sulfide (VMS) deposits, as well as related seafloor hydrothermal<br />
research by the international community. The Chinese<br />
papers report a surge in exploration for and discovery <strong>of</strong><br />
ancient VMS deposits in P.R. China, stimulated by discoveries<br />
<strong>of</strong> active systems at ocean ridges and volcanic island arcs.<br />
A summary <strong>of</strong> topics <strong>of</strong> the issue and ordering information<br />
follows:<br />
Eulogy for Sergei Krasnov<br />
ANCIENT VOLCANOGENIC MASSIVE<br />
SULFIDE DEPOSITS IN CHINA<br />
MODERN SEAFLOOR HYDROTHERMAL<br />
DEPOSITS<br />
Volcanic Island Arcs and Ocean Ridges<br />
Volcanic Island Arcs<br />
Ocean Ridges<br />
The special issue may be ordered from:<br />
Publisher, Geological <strong>Society</strong> <strong>of</strong> the Canadian Institute <strong>of</strong><br />
Mining, Metallurgy and Petroleum<br />
Suite 1210, 3400 de Maisonneuve Blvd.<br />
West Montreal, Quebec<br />
Canada H3Z 3B8<br />
Tel.: (514) 939-2710, ext. 320; Fax: (514) 939-2714;<br />
E-mail: publications@cim.org<br />
Website: http://www.cim.org/geosoc/emgVol8-03.cfm<br />
Price: CDN$40.00/US$27.00<br />
PREPAYMENT REQUIRED IN CANADIAN OR U.S. FUNDS<br />
August 29–September 2, 2003<br />
Organized by the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong><br />
Field trip leaders:<br />
Pr<strong>of</strong>. Kamen Bogdanov, S<strong>of</strong>ia University, and<br />
Pr<strong>of</strong>. Strashimir Strashimirov, Mining University, S<strong>of</strong>ia<br />
The Srednogorie metallogenic zone in Bulgaria developed during the<br />
Mezosoic as an andesite-dominated island-arc system within the<br />
global Tethyan-Eurasian copper belt. Significant examples <strong>of</strong> discrete<br />
Upper Cretaceous volcano-plutonic centers with porphyry-copper<br />
(-Au-PGM) deposits (Elatsite, Medet, Assarel), closely associated<br />
with intermediate- to high-sulfidation (HS) Cu-Au epithermal<br />
deposits (Chelopech, Radka, Elshitsa) occur in the Panagyurishte ore<br />
district. Since 1950 more than 460 Mt <strong>of</strong> ore has been mined from<br />
these deposits, producing about 2 Mt Cu and 2.5 Moz <strong>of</strong> gold.<br />
During the three-day field trip the participants will tour the<br />
three major porphyry-copper deposits in Bulgaria (Elatsite, Assarel<br />
and Medet) as well as the Chelopech HS epithermal Cu-Au mine,<br />
learn about the local geology, see and sample host-rock alteration<br />
styles and important ore types, and discuss their genesis.<br />
The field trip starts in S<strong>of</strong>ia, Bulgaria, on August 30. The registration<br />
fee includes accommodation in S<strong>of</strong>ia from August 29 to<br />
September 2 (4 nights). Participants are asked to arrange their own<br />
travel between Athens and S<strong>of</strong>ia.<br />
DAY 1 (August 30):<br />
S<strong>of</strong>ia; Pangyurishte ore district;<br />
Assarel and Medet porphyry<br />
copper deposits; Lunch<br />
at Panagyurishte; S<strong>of</strong>ia<br />
DAY 2 (August 31):<br />
S<strong>of</strong>ia; Etropole-Elatsite Cu-Au-<br />
PGM porphyry-copper deposit;<br />
Lunch in Etropole; S<strong>of</strong>ia<br />
DAY 3 (September 1):<br />
S<strong>of</strong>ia; Navan-Chelopech HS<br />
epithermal Cu-Au deposit;<br />
Lunch at Koprivshtitsa; S<strong>of</strong>ia<br />
(accommodations in S<strong>of</strong>ia<br />
included)<br />
Provisional cost: <strong>SEG</strong> and<br />
SGA members US$395; nonmembers<br />
US$495, for early<br />
payment by 30 June; after<br />
this date, <strong>SEG</strong> and SGA members<br />
US$495, non-members<br />
US$595; <strong>SEG</strong> and SGA student<br />
members, US$200 (limited<br />
seats available).<br />
Maximum number <strong>of</strong><br />
participants: 36, minimum<br />
number <strong>of</strong> participants: 20<br />
Registration deadline<br />
April 25th. Please send your<br />
request for a registration form<br />
to Pr<strong>of</strong>. Kamen Bogdanov ,<br />
S<strong>of</strong>ia University St. Kliment<br />
Ohridski” Faculty <strong>of</strong> Geology<br />
and Geography, Department <strong>of</strong><br />
Mineralogy, Petrology and<br />
<strong>Economic</strong> Geology, 15 Tsar<br />
Osvoboditel Bd. 1504 S<strong>of</strong>ia,<br />
BULGARIA<br />
tel. (+3592) 9308256,<br />
fax: (+3592) 9460255,<br />
e-mail: kamen@gea.uni-s<strong>of</strong>ia.<br />
bg OR to <strong>SEG</strong>, 7811 Shaffer<br />
Parkway, Littleton, CO 80127,<br />
USA, tel.: (+1-720) 981-7882,<br />
fax: (+1-720) 981-7874,<br />
E-mail: seg@segweb.org, or<br />
visit the <strong>SEG</strong> website at<br />
www.segweb.org.<br />
Registration and payment<br />
should be made directly to<br />
the <strong>SEG</strong> <strong>of</strong>fice.
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 39<br />
Ore Deposits Mapping Course in Nevada<br />
October 12–15, 2003<br />
Organizers: Erich U. Petersen, William X. Chávez, Jr., and Jeffrey W. Hedenquist<br />
A three-day mapping course will be held this fall<br />
in Nevada. The course will emphasize the field and<br />
geochemical characteristics <strong>of</strong> epithermal precious<br />
metal systems, with discussion <strong>of</strong> the “what to map”<br />
features exposed in the Goldfield, Cuprite, and<br />
Original Bullfrog mining districts <strong>of</strong> western Nevada.<br />
Participants will assemble on Sunday afternoon,<br />
October 12, in Las Vegas, Nevada, and travel to<br />
Beatty. The first evening session will present the<br />
opportunity to see and discuss hand specimens<br />
from the field-trip areas as well as specimens from<br />
other epithermal style Au-Ag deposits. During field<br />
sessions at Goldfield, participants will observe a<br />
“high-sulfidation” quartz-alunite hydrothermal system,<br />
with emphasis on the structural, alteration, and<br />
mineralization styles. The Cuprite area <strong>of</strong>fers the<br />
chance to see a variety <strong>of</strong> alteration features,<br />
notably changes in alteration assemblages associated<br />
with changes in rock types. <strong>Final</strong>ly, at the<br />
Original Bullfrog Mine, trip participants will observe<br />
and discuss a well developed “low-sulfidation”<br />
quartz-Au system associated with development <strong>of</strong><br />
abundant, multi-generation silica within a low-angle<br />
faulting environment.<br />
The course will end late Wednesday afternoon,<br />
October 15, in Las Vegas. Participants will be<br />
responsible for their own departure plans.<br />
Course fees cover the following: three nights (Oct.<br />
12-13-14) double-occupancy lodging, three breakfasts,<br />
lunches, and field snacks (Oct. 13-14-15), transportation<br />
to/from Las Vegas (we can drop people<br />
<strong>of</strong>f at the airport on the 15th), and a course field<br />
manual. For more course and registration information,<br />
please see the <strong>SEG</strong> website at , or contact Erich U. Petersen<br />
(), William X. Chávez, Jr.<br />
(), or Jeffrey W. Hedenquist<br />
(hedenquist@aol.com).<br />
UNESCO-<strong>SEG</strong> Metallogeny<br />
Course in Quito<br />
June 1–12, 2003<br />
The 2003 edition <strong>of</strong> the UNESCO-<strong>SEG</strong> Metallogeny<br />
Course will be held in Quito, Ecuador, at the<br />
Universidad Central del Ecuador, from June 1 to 12.<br />
Those among the international instructors this year<br />
who have confirmed include the following<br />
Lluís Fontboté (Geneva, Switzerland, coordinator),<br />
Larry Meinert (Washington State University)<br />
and Massimo Chiaradia (Leeds University, UK).<br />
Other instructors, the detailed program<br />
(including field trip) and the travel grant<br />
application forms will be posted on the website:<br />
<br />
ANNOUNCEMENT<br />
Call for Papers & Publication<br />
Volcanic, Geothermal & Ore-forming Fluids:<br />
Rulers & Witnesses <strong>of</strong> Processes in the Earth<br />
A Tribute to Werner F. Giggenbach<br />
Special Session (oral/poster presentations) at the<br />
Goldschmidt Conference 2003,Kurashiki, Japan<br />
September 7-12<br />
http://www.ics-inc.co.jp/gold2003/<br />
Subjects: volcanic-geothermal systems and ore-forming environments;<br />
sources <strong>of</strong> fluids in the crust, their interaction with rocks at crustal<br />
& deeper levels, & processes that affect their composition.<br />
Contributors contact<br />
Jeff Hedenquist (hedenquist@aol.com)<br />
Stuart Simmons (sf.simmons@auckland.ac.nz)<br />
A special volume co-sponsored by<br />
the SE G & the Geochemical <strong>Society</strong><br />
will be published in 2003<br />
ANNOUNCEMENTS
40 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
personal notes & news<br />
CAREER-RELATED<br />
CHANGES<br />
ROBERT W. SCHAFER (<strong>SEG</strong> 1986 F)<br />
has been appointed president and chief<br />
executive <strong>of</strong>ficer <strong>of</strong> Coniagas Resources,<br />
Toronto, Ontario, Canada, and was<br />
elected to the board <strong>of</strong> directors.<br />
Previously, Bob was vice president <strong>of</strong><br />
exploration for Kinross Gold.<br />
MICHAEL THOMSEN (<strong>SEG</strong> 1999) has<br />
been appointed executive chairman <strong>of</strong><br />
the Board <strong>of</strong> Directors <strong>of</strong> Cambridge<br />
Mineral Resources plc. He had been<br />
executive business development director<br />
<strong>of</strong> the board. Prior to that, he was<br />
exploration director <strong>of</strong> Newmont<br />
Mining Corporation and held various<br />
positions within the Gold Fields Mining<br />
Company and Freeport McMoRan, Inc.<br />
Corrections<br />
The January Newsletter (“Personal Notes<br />
& News,” note on J. David Lowell, p. 50)<br />
gave an erroneous location for the<br />
Pierina mine; the mine is in central Peru.<br />
AWARDS &<br />
ACCOMPLISHMENTS<br />
TRYGVE HOY (<strong>SEG</strong> 1997) was<br />
awarded the 2002 Provincial Geologist’s<br />
Medal by the British Columbia Geological<br />
Survey. Trygve joined the Survey in<br />
1974 and over the years has become an<br />
expert on the evolution <strong>of</strong> the margin <strong>of</strong><br />
western North America and the setting<br />
<strong>of</strong> the giant Sullivan orebody. He<br />
helped organize the Sullivan project, a<br />
five-year effort that culminated in The<br />
Sullivan Volume, which includes an<br />
overview by Hoy and others <strong>of</strong> the<br />
Purcell basin. He has also worked on<br />
VMS deposits in British Columbia and<br />
most recently, proposed that the<br />
Monashee complex might be an example<br />
<strong>of</strong> the Broken Hill-type deposit.<br />
DOUGLAS SILVER (<strong>SEG</strong> 1983 F) was<br />
asked to speak on exploration at the<br />
PDAC-CIM luncheon on March 12. Doug<br />
is president <strong>of</strong> Balfour Holdings, Inc.<br />
DEATHS<br />
MARK ALBERT MILLER (<strong>SEG</strong> 1987 F)<br />
died Nov. 8, 2002, in Tucson, AZ. He<br />
was 50 years old.<br />
Mark completed a bachelor <strong>of</strong> science<br />
degree at University <strong>of</strong> Missouri-<br />
Rolla, beginning a 28-year career in<br />
grassroots metal exploration as well as<br />
mine development and operations. He<br />
worked for Kerr-McGee, Cominco, and<br />
New Jersey Zinc. For 22 years, he was<br />
employed by Asarco, working in a variety<br />
<strong>of</strong> mining districts, including lead<br />
and zinc in Tenessee, Kentucky. and<br />
the Viburnum trend. Mark was also<br />
involved in porphyry copper deposit<br />
management at Ray, Silver Bell,<br />
Sacaton, and Mission mines in Arizona.<br />
Most recently, he managed a multimillion-dollar<br />
program at Silver Bell. Mark<br />
was an active member <strong>of</strong> several organizations,<br />
including the <strong>Society</strong> <strong>of</strong><br />
Mining, Metallurgy, and Exploration<br />
and the Arizona Geological <strong>Society</strong>.<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong><br />
Epithermal Gold<br />
Mineralization and<br />
Modern Analogues,<br />
Kyushu, Japan<br />
Guidebook Prepared for the <strong>Society</strong><br />
<strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> Field Trip<br />
28 October-3 November 2001<br />
Guidebook<br />
Series<br />
w.segweb.org<br />
Edited by:<br />
Craig A. Feebrey,<br />
Toshihiko Hayashi,<br />
Sachihiro Taguchi<br />
Series Editor:<br />
Tommy B. Thompson<br />
©2001, <strong>Society</strong> <strong>of</strong><br />
<strong>Economic</strong> <strong>Geologists</strong>, Inc.<br />
Volume 34<br />
POST-CONFERENCE SALE<br />
<strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong><br />
Global Exploration 2002:<br />
Integrated Methods for Discovery<br />
Co-sponsored by:<br />
<strong>Society</strong> for Geology Association <strong>of</strong> Exploration <strong>Society</strong> <strong>of</strong> Exploration<br />
Applied to Mineral Deposits Geochemists Geophysicists<br />
<strong>SEG</strong> Guidebook Series Volume 34:<br />
Epithermal Gold Mineralization and<br />
Modern Analogues, Kyushu, Japan:<br />
Craig A. Feebrey, Toshihiko Hayashi,<br />
& Sachihiro Taguchi, Editors; 2001, 188p.<br />
ORDER NOW on p. 42<br />
$36.00 Nonmembers $28.80 Members<br />
Abstracts <strong>of</strong> Oral and<br />
Poster Presentations<br />
APRIL 14–16, 2002<br />
Abstract Editors: Erin E. Marsh, Richard J. Goldfarb,<br />
and Warren C. Day<br />
Nonmembers: US$10<br />
NEW<br />
See p. 42<br />
to order<br />
Members: US$8<br />
PAID ADVERTISEMENT
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 41<br />
SOCIETY OF ECONOMIC GEOLOGISTS<br />
Membership Application<br />
Membership in the <strong>Society</strong> is open to all geoscience graduates holding the bachelor’s degree. Student Members must be full-time<br />
students. Annual dues are US$85 for Members and US$10.00 for Student Members. Subscriptions to <strong>Economic</strong> Geology, the quarterly<br />
<strong>SEG</strong> Newsletter and <strong>SEG</strong> Membership Directory are included in the membership. Application may be made by completing this form and<br />
submitting it with the appropriate sponsor signature to <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>, Inc., 7811 Shaffer Parkway, Littleton, CO 80127,<br />
USA, phone: 720-981-7882; fax 720-981-7874; e-mail: seg@segweb.org<br />
NOTE: PLEASE DO NOT INCLUDE ANY PAYMENT WITH THIS APPLICATION.<br />
SECTION I (TO BE COMPLETED BY THE APPLICANT. PLEASE USE BLACK INK.) ■ Ms. ■ Mr. ■ Dr.....<br />
Personal Information:<br />
__________________________________________________________________________________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________ __________________________________________________ ____________________________________________________<br />
SURNAME (TYPE OR PRINT) FIRST MIDDLE DATE OF BIRTH<br />
__________________________________________________________________________________________________________________________________________________________________________________________________<br />
COMPANY ⁄ INSTITUTION<br />
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________<br />
ADDRESS – STREET<br />
__________________________________________________________________________________________________________________________________________________________________________________________________ _________________________________________________________________________________________ ______________________________________________ _______________________________________________________________________<br />
CITY STATE ⁄ PROVINCE POSTAL CODE COUNTRY<br />
____________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________<br />
PHONE (COUNTRY CODE, CITY CODE, NUMBER) FAX (COUNTRY CODE, CITY CODE, NUMBER) E-MAIL<br />
Education: UNIVERSITY AND LOCATION YEARS (FROM – TO) MAJOR DEGREE YEAR GRANTED<br />
————————————————— ———————————— ————— ————— —–—————<br />
Undergraduate: ___________________________________________ _____________ _____________ _______ _________<br />
___________________________________________ _____________ _____________ _______ _________<br />
Graduate: ___________________________________________ _____________ _____________ _______ _________<br />
___________________________________________ _____________ _____________ _______ _________<br />
Pr<strong>of</strong>essional Experience: (LIST IN ORDER FROM MOST RECENT AT THE TOP.)<br />
FROM (Month/Year) — TO (Month/Year) POSITION EMPLOYER<br />
PRESENT<br />
___________________________________________ _________________________________________________ ________________________________________________<br />
___________________________________________ _________________________________________________ ________________________________________________<br />
___________________________________________ _________________________________________________ ________________________________________________<br />
___________________________________________ _________________________________________________ ________________________________________________<br />
______________________________________________________________________ _____________________<br />
SIGNATURE<br />
DATE<br />
SECTION II<br />
(To be completed by the sponsor who must be a Fellow <strong>of</strong> the <strong>Society</strong>; for student membership applicants, the sponsor must be either a Fellow <strong>of</strong> the <strong>Society</strong><br />
or Head <strong>of</strong> the Earth Sciences Department.)<br />
I sponsor the above-named individual for ■ Membership, or for ■ Student Membership.<br />
________________________________________________________________________<br />
SPONSOR’S NAME (TYPE OR PRINT)<br />
■ FELLOW, SOCIETY OF ECONOMIC GEOLOGISTS, OR<br />
■ HEAD, EARTH SCIENCE DEPARTMENT<br />
To the best <strong>of</strong> my knowledge the information<br />
provided by the applicant is correct.<br />
________________________________________________________________________<br />
SIGNATURE OF SPONSOR<br />
DATE<br />
7⁄00<br />
( )<br />
PHONE NUMBER<br />
____________________<br />
DATE RECEIVED
42 <strong>SEG</strong> NEWSLETTER No 53 • APRIL 2003<br />
SOCIETY OF ECONOMIC GEOLOGISTS<br />
Publications Order Form<br />
Full details on publications are available on-line at www.segweb.org / Publications<br />
NEW<br />
NEW<br />
TITLE LIST MEMBER<br />
PRICE PRICE<br />
GUIDEBOOK SERIES:<br />
GB 8: Industrial Mineral Resources <strong>of</strong> the Delaware Basin,<br />
Texas, and New Mexico: J.R. Kyle, Editor; 1990, 203p. $24.00 $19.20<br />
GB 22: Carbonate-Hosted Lead-Zinc-Fluorite-Barite Deposits<br />
<strong>of</strong> North America: Kula C. Misra, Editor; 1995, 254p. $36.00 $28.80<br />
GB 23: Field Guide to Zinc-Lead Mineralization on the Southeast<br />
Lennard Shelf, Canning Basin, Western Australia:<br />
Julian Vearncombe, et al., Editors; 1995, 218p; 4 colored plates $36.00 $28.80<br />
GB 28: The Carlin-Type Gold Deposits Field Conference:<br />
Peter G. Vikre, et al., Editors; 1997, 294p.; 3 colored figures $36.00 $28.80<br />
GB 29: Geology and Ore Deposits <strong>of</strong> the Oquirrh and Wasatch<br />
Mountains, Utah: David A. John & Ge<strong>of</strong>frey H. Ballantyne, Editors;<br />
1997 (Revised 1998), 308p; 19 colored figures, 2 oversize<br />
colored plates (in pocket) $40.00 $32.00<br />
GB 30: Gold Deposits <strong>of</strong> Northern Sonora, Mexico: K.F. Clark,<br />
Editor; 1998, 252p.; 12 colored figures, 1 oversized figure,<br />
2 oversized plates (in pocket) $36.00 $28.80<br />
GB 31: Epithermal Mineralization <strong>of</strong> the Western Carpathians:<br />
Ferenc Molnár, Jaroslav Lexa, & Jeffrey W. Hedenquist, Editors;<br />
1999, 274p. $36.00 $28.80<br />
GB 32: PART I. Contrasting Styles <strong>of</strong> Intrusion-Associated<br />
Hydrothermal Systems: John H. Dilles, et al., Editors;<br />
PART II. Geology & Gold Deposits <strong>of</strong> the Getchell Region;<br />
Elizabeth Jones Crafford, Editor; 2000, 234p. $40.00 $32.00<br />
GB 34: Epithermal Gold Mineralization and Modern Analogues,<br />
Kyushu, Japan: Craig A. Feebrey, Toshihiko Hayashi, & Sachihiro<br />
Taguchi, Editors; 2001 188p. AVAILABLE ON CD ONLY! $36.00 $28.80<br />
GB 35: PART I. Proterozoic Iron and Zinc Deposits <strong>of</strong> the Adirondack<br />
Mountains <strong>of</strong> New York and the New Jersey Highlands: John F. Slack,<br />
Editor; PART II. Environmental Geochemistry and Mining History <strong>of</strong><br />
Massive Sulfide Deposits in the Vermont Copper Belt;<br />
Jane M. Hammarstrom & Robert R. Seal II; 2001, 294p. $36.00 $28.80<br />
ECONOMIC GEOLOGY MONOGRAPH SERIES:<br />
EG Mono 9: Mineral Deposits <strong>of</strong> Alaska: R.J. Goldfarb &<br />
L.D. Miller, Editors; 1997, 483p., 9 colored figures $<strong>45</strong>.00 $36.00<br />
EG Mono 10: The Giant Kidd Creek Volcanogenic Massive<br />
Sulfide Deposit, Western Abitibi Subprovince, Canada:<br />
Mark D. Hannington & C. Tucker Barrie, Editors; 1999, 676p.,<br />
32 colored figures; hard bound. $60.00 $48.00<br />
10-Volume Bibliography and Index, Volumes 81-90, 1986-1995 $20.00 $16.00<br />
ECONOMIC GEOLOGY JOURNAL SPECIAL ISSUES:<br />
Vol. 95:4 Special Issue on Voisey’s Bay Ni-Cu-Co Deposit:<br />
Editors, Anthony J. Naldrett & Chusi Li, 255p. $20.00 $16.00<br />
Vol. 95:6 Special Issue Devoted to Skarn Deposits: Editors,<br />
Lawrence D. Meinert, David R. Lentz & Rainer J. Newberry, 187p. $20.00 $16.00<br />
Vol. 96:2 Special Issue Devoted to Porphyry Copper Deposits <strong>of</strong><br />
Northern Chile: Editors, John H. Dilles & Francisco Camus,<br />
197p., color fold-out map $25.00 $20.00<br />
Vol . 96:5 Special Issue Devoted to Alteration Associated with<br />
Volcanic-Hosted Massive Sulfide Deposits and its Exploration<br />
Significance: Editors, J. Bruce Gemmell & Walter Herrmann,<br />
413p., color fold-out map $40.00 $32.00<br />
Vol . 97:4 Special Issue Devoted to the Early to Middle<br />
Archean Mineral Deposits <strong>of</strong> the North Pilbara Terrain,<br />
Western Australia: Guest Editors, David L. Huston,<br />
Arthur H. Hickman, & Peter L.F. Collins, 237p. $25.00 $20.00<br />
Vol. 97:7 Special Issue Devoted to the<br />
Mineral Deposits <strong>of</strong> the Sudbury Basin:<br />
Guest Editors, C.M. Lesher & P.C. Thurston, 256p. $35.00 $28.00<br />
02/03<br />
TITLE LIST MEMBER<br />
PRICE PRICE<br />
REVIEWS IN ECONOMIC GEOLOGY SERIES:<br />
Rev. 2: Geology and Geochemistry <strong>of</strong> Epithermal Systems:<br />
B.R. Berger & P.M. Bethke, Editors $10.00 $8.00<br />
Rev. 3: Exploration Geochemistry: Design and Interpretation <strong>of</strong><br />
Soil Surveys: W.K. Fletcher,et al., Editors $10.00 $8.00<br />
Rev. 5: Sedimentary and Diagenetic Mineral Deposits:<br />
A Basin Analysis Approach to Exploration: E.R. Force,<br />
J.J. Eidel & J.B. Maynard, Editors $10.00 $8.00<br />
Rev. 6: PART A: The Environmental Geochemistry <strong>of</strong> Mineral Deposits:<br />
Processes, Techniques, and Health Issues; G.S. Plumlee &<br />
M.J. Logsdon, Editors; PART B: The Environmental Geochemistry<br />
<strong>of</strong> Mineral Deposits: Case Studies and Research Topics;<br />
L.H. Filipek & G.S. Plumlee, Editors; 1999, Volume set total 583p.<br />
Sold only as a set $55.00 $44.00<br />
Rev. 7: Applications <strong>of</strong> Microanalytical Techniques to<br />
Understanding Mineralizing Processes: M.A. McKibben,<br />
W.C. Shanks, III, & W.I. Ridley, Editors; 1998, 271p. $34.00 $27.20<br />
Rev. 8: Volcanic-Associated Massive Sulfide Deposits:<br />
Processes and Examples In Modern And Ancient Settings:<br />
C. Tucker Barrie & Mark D. Hannington, Editors; 1999, 416p. $40.00 $32.00<br />
Rev. 9: Ore Genesis and Exploration: The Roles <strong>of</strong> Organic Matter:<br />
Thomas H. Giordano, Richard M. Kettler, & Scott A. Wood, Editors;<br />
2000, 340 p. $49.00 $39.20<br />
Rev. 10: Techniques in Hydrothermal Ore Deposits Geology:<br />
J.P. Richards & P.B. Larson, Editors; 1998, 264p. $34.00 $27.20<br />
Rev. 11: Metamorphosed and Metamorphogenic Ore Deposits:<br />
P.G. Spry, B. Marshall, & F.M. Vokes, Editors; 2000, 310p. $44.00 $35.20<br />
Rev. 12: Application <strong>of</strong> Radiogenic Isotopes to Ore Deposit<br />
Research and Exploration: David D. Lambert & Joaquin Ruiz,<br />
Editors; 1999, 208p. $32.00 $25.60<br />
Rev. 13: Gold In 2000: Steffen G. Hagemann & Philip E. Brown,<br />
Editors; 2000, 560p.; 8 colored figures $69.00 $55.20<br />
Rev. 14: Structural Controls on Ore Genesis: Jeremy P. Richards<br />
& Richard M. Tosdal, Editors; 2001, 190p. $<strong>45</strong>.00 $36.00<br />
SPECIAL PUBLICATIONS SERIES:<br />
SP 3: Ore Reserve Estimates in the Real World:<br />
J.G. Stone & P.G. Dunn; Third Edition, 2002, 121p. $37.00 $29.60<br />
SP 4: Carbonate-Hosted Lead-Zinc Deposits:<br />
D.F. Sangster, Editor; 1996, 672p.; hard bound $60.00 $48.00<br />
SP 7: Geology and Ore Deposits <strong>of</strong> the Central Andes:<br />
Brian J. Skinner, Editor; 1999, 368p. $38.00 $30.40<br />
SP 8: New Mines and Discoveries in Mexico and Central America:<br />
Tawn Albinson and Carl E. Nelson, Editors; 2001, 362p. $68.00 $54.40<br />
SP 9: Integrated Methods for Discovery: Global Exploration in<br />
the 21st Century: Richard J. Goldfarb and Richard L. Nielsen,<br />
Editors; 2002, 392p. $59.00 $47.20<br />
Global Exploration 2002: Integrated Methods for Discovery<br />
Abstracts <strong>of</strong> Oral and Poster Presentations, Apr. 14-16, 2002;<br />
Erin E. Marsh, Richard J. Goldfarb, and Warren C. Day, Editors; 150p. $10.00 $ 8.00<br />
<strong>SEG</strong> Member Discount:<br />
Members may purchase a single copy <strong>of</strong><br />
each publication at 20% <strong>of</strong>f the listed price.<br />
Sub-Total<br />
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➥
APRIL 2003 • No 53 <strong>SEG</strong> NEWSLETTER 43<br />
SOCIETY OF ECONOMIC GEOLOGISTS<br />
Publications Order Form<br />
Full details on publications are available on-line at www.segweb.org / Publications<br />
TITLE LIST MEMBER<br />
PRICE PRICE<br />
TITLE LIST MEMBER<br />
PRICE PRICE<br />
<strong>SEG</strong> VIDEO SERIES: Note: Each tape includes two one-hour lectures*<br />
Vid. 1: 1) The Genesis <strong>of</strong> Magmatic Ni-Cu (PGE) Sulfide Deposits<br />
2) Physical Volcanology, Geochemistry and Petrogenesis <strong>of</strong><br />
Komatiite Basalt Lava Channels and Channelized Sheet Flows<br />
in the Cape Smith Belt, New Quebec: C. Michael Lesher,<br />
Laurentian University, Sept. 1998 $25.00 $20.00<br />
Vid. 2: 1) Worldwide Exploration: Can We Afford It?,<br />
2) Exploration Strategic Planning: Michael J. Knuckey, President,<br />
Noranda Mining Exploration, Ltd., Nov. 1998 $25.00 $20.00<br />
Vid. 3: 1) The Porphyry to Epithermal Continuum: Evidence from<br />
Volcanoes and Ore Deposits, 2) Characteristics <strong>of</strong> and Exploration<br />
for Epithermal Gold Deposits in the Circum Pacific: Jeffrey W.<br />
Hedenquist, Consultant in Mineral Exploration, Ltd., April 1999 $25.00 $20.00<br />
Vid. 4: 1) Epithermal Gold Deposits—Characteristics, Classes<br />
and Causes 2) Convergent Evolution and Ore Deposits:<br />
Noel C. White, Consulting <strong>Economic</strong> Geologist, Sept. 1999 $25.00 $20.00<br />
Vid. 5: 1) Cordilleran Metallogeny <strong>of</strong> Western Canada<br />
2) Intrusion-related Mineral Deposits: Tectonics, Magmas and<br />
Fluids: John Thompson, Teck Corporation, Feb. 2000 $25.00 $20.00<br />
Vid. 6: 1) Geology and Genesis <strong>of</strong> the Irish Zn-Pb-Ag Ore Field<br />
2) The Lisheen Deposits, Ireland: Discovery and Delineation<br />
<strong>of</strong> a Blind Zn-Pb-Ag Orebody: Murray W. Hitzman,<br />
Colorado School <strong>of</strong> Mines, Sept. 2000 $25.00 $20.00<br />
Vid. 7: 1) How Orebodies are Found 2) The Arequipa<br />
Resources Pierina Project: David J. Lowell,<br />
Lowell Mineral Exploration, Feb. 2001 $25.00 $20.00<br />
Vid. 8: 1) Tectonic setting and structural controls in the giant<br />
Eocene-Oligocene porphyry copper deposits <strong>of</strong> Northern<br />
Chile 2) Late Cenozoic mineralization and crustal evolution<br />
in a thickening arc: the Maricunga and El Indio mineral<br />
belts: Constantino Mpodozis, Chilean Geological Survey, Mar. 2001 $25.00 $20.00<br />
Vid. 9: 1) Mineral Resources and Mining: Supply, Demand the<br />
Environment 2) Supergene Oxidation <strong>of</strong> Copper Deposits:<br />
The Zoning <strong>of</strong> Copper Oxide Minerals and Applications to<br />
Minerals Exploration: William X. Chavez, Jr., New Mexico<br />
Institute <strong>of</strong> Mining, Apr. 2001 $25.00 $20.00<br />
Vid. 10: 1) Reflections on the Bre-X Saga<br />
2) Pioneering Mining in the Arctic: Graham Farquharson,<br />
Strathcona Mineral Services, Ltd., Nov. 2001 $25.00 $20.00<br />
Vid. 11: 1) Mississippi Valley-type Lead-Zinc Deposits through<br />
Earth History: Implications for Ore Genesis, Crustal Fluid-Flow,<br />
Paleoclimate, and Relation to Shale-Hosted (SEDEX) Deposits:<br />
David L. Leach, U.S. Geological Survey, Mar. 2002 $25.00 $20.00<br />
Vid. 12: 1) Discovery History and Geology <strong>of</strong> the Cannington<br />
Ag-Pb-Zn Deposit 2) Advances in Micro-Analytical Technologies<br />
— What a grain can tell you? Steve Walters,<br />
Macquarie University, Apr. 2002 $25.00 $20.00<br />
Make Check Payable To: Sub-Total ____________<br />
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Shipping Charges:<br />
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*For a shipping discount on four or more items mailed to the same address, please contact the <strong>SEG</strong> <strong>of</strong>fice.<br />
02/03
CalendarStar (★) indicates new entry. Send entries to the <strong>SEG</strong> Office,<br />
attn. <strong>SEG</strong> Production Director: 7811 Shaffer Parkway, Littleton, CO 80127 USA<br />
Tel. +1.720.981.7882 /Fax +1.720.981.7874.<br />
SOCIETY OF ECONOMIC GEOLOGISTS<br />
May 25–28, Geological Association <strong>of</strong><br />
Canada (GAC), Mineralogical Association <strong>of</strong> Canada<br />
(MAC) and the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong> (<strong>SEG</strong>)<br />
Joint Annual Meeting, Vancouver, B.C. Canada. For<br />
more information: Vancouver 2003, c/o Venue West<br />
Conference Services Ltd., 6<strong>45</strong>-375 Water Street,<br />
Vancouver, B.C. Canada, V6B 5C6; Tel. +604.681.5226;<br />
Fax +604.681.2503; E-mail: Vancouver 2003@<br />
nrcan.gc.ca; website: www.Vancouver2003.com.<br />
★<br />
★<br />
★<br />
★<br />
★<br />
June 1–12. <strong>SEG</strong>-UNESCO Metallogeny Course, Quito,<br />
Ecuador. Web-site: www.unige.ch/sciences/terre/mineral/<br />
ore/min_ore.html.<br />
Aug. 9–21. <strong>SEG</strong>/IGCP 473 Field Symposium, Urumqi,<br />
China. Theme: “Paleozoic Geodynamic Processes and<br />
Metallogeny <strong>of</strong> Chinese Altay and Tianshan”; E-mail:<br />
jingwenmao@263.net; Circular: www.nhm.ac.uk/mineral<br />
ogy/cercams/activities/Urumqi_firstcircularlast.doc.<br />
Aug. 24–28. <strong>SEG</strong> Symposium at SGA Meeting,<br />
Athens, Greece. Theme: “Exploring for Tethyan ores:<br />
Development from historic roots”; E-mail: molnar@<br />
abyss.elte.hu; Web-site: www.segweb.org/meetings/htm.<br />
Aug. 24–28. 7th Biennial SGA-<strong>SEG</strong> Meeting, Athens,<br />
Greece. For information on the <strong>SEG</strong> symposium on<br />
Tethyan metallogeny and related <strong>SEG</strong> field trip, see the<br />
advertisement, p. <strong>45</strong> and p. 48. Abstract submission<br />
deadline: January 31, 2003. Registration details:<br />
www.igme.gr/sga conference.htm.<br />
Aug. 29–Sept. 2 B1 Cretaceous Porphyry-Epithermal<br />
Systems <strong>of</strong> the Srednogorje Zone Field Trip, Bulgaria.<br />
Organized by the <strong>Society</strong> <strong>of</strong> <strong>Economic</strong> <strong>Geologists</strong>.<br />
Registration deadline: April 25, 2003. Send requests for<br />
a registration form to Pr<strong>of</strong>. Kamen Bogdanov , S<strong>of</strong>ia<br />
University “St. Kliment Ohridski” Faculty <strong>of</strong> Geology and<br />
Geography, Department <strong>of</strong> Mineralogy, Petrology and<br />
<strong>Economic</strong> Geology, 15 Tsar Osvoboditel Bd., 1504 S<strong>of</strong>ia,<br />
BULGARIA; Tel.+3592.9308256; Fax +3592.9460255;<br />
E-mail: kamen@gea.uni-s<strong>of</strong>ia.bg; OR to <strong>SEG</strong> at 7811<br />
Shaffer Parkway, Littleton, CO 80127, USA, tel.<br />
+1.720.981.7882; Fax +1.720.981.7874; E-mail:<br />
seg@segweb.org; Website: www.segweb.org.<br />
Registration and payment will be made directly to the<br />
<strong>SEG</strong> <strong>of</strong>fice.<br />
Sept. 7–12. <strong>SEG</strong> Session at the Goldschmidt<br />
Conference, Kurashiki, Japan. Theme: “Volcanic,<br />
★<br />
★<br />
★<br />
Geothermal and Ore-forming Fluids: Rulers and<br />
Witnesses <strong>of</strong> Processes in the Earth”—A Tribute to<br />
Werner F. Giggenbach; E-mail: hedenquist@aol.com;<br />
Web-site: www.ics-inc.co.jp/gold2003/.<br />
Oct. 6–10. Andean Metallogenesis: New Concepts,<br />
Discoveries and Updates Symposium held in conjunction<br />
with the 10 th Chilean Geological Congress,<br />
Concepción, Chile. Organized by Jose Perello and<br />
Richard H. Sillitoe under sponsorship <strong>of</strong> <strong>SEG</strong>. Contacts:<br />
10 th Chilean Geological Congress, Comite organizador,<br />
Dept. Ciencias De Latier, Universidad De Concepcion,<br />
Casilla 160-C, Concepcion, Chile, Tel./Fax<br />
+56.41.246075; E-mail: cgeologico@udec.cl; website:<br />
www.udec.cl/cgeologico and Symposium: Jose Perello<br />
at E-mail: jperello@aminerals.cl.<br />
OTHER EVENTS<br />
June 7–12, Classic Clay and Minerals: Joint<br />
Clay Minerals <strong>Society</strong> (CMS) and Mineralogical<br />
<strong>Society</strong> <strong>of</strong> America (MSA) Meeting, Athens, Georgia.<br />
For more information contact: Paul Schroeder,<br />
E-mail: schroe@srel.edu; website: www.gly.uga.edu.<br />
June 22–27. 8 th International Kimberlite Conference,<br />
Victoria, British Columbia, Canada. For more information<br />
contact, Dr. Roger H. Mitchell, Geology Department,<br />
Lakehead University, Thunder Bay, Ontario, Canada P7B<br />
5E1; Tel. +1.807.343.8287; Fax: +1.807.623.7526;<br />
E-mail: Roger.Mitchell@lakeheadu.ca;<br />
Web-site: www.venuewest.com/8IKC.<br />
July 12–18. 6 th International Conference <strong>of</strong> Acid<br />
Rock Drainage: ICARD 2003, Cairns, Queensland,<br />
Australia. Contact: Tel. +61.3.9662.3166; Fax:<br />
+61.3.9662.3662; E-mail: miriamw@ausimm.com.au.<br />
Aug. 16–22. SCANDIUM 2003. An International<br />
Symposium on the Mineralogy and Geochemistry <strong>of</strong><br />
Scandium. Geological Museum at the Natural History<br />
Museums and Botanical Garden, University <strong>of</strong> Oslo,<br />
Norway. Web site: http://www.nhm.uio.no/<br />
geomus/scsymp/<br />
Aug. 19–21. Fermor Flagship Meeting: World Class<br />
Mineral Deposits and Earth Evolution, Cardiff, United<br />
Kingdom. Organized by the Geological <strong>Society</strong> <strong>of</strong><br />
London’s Mineral Deposits Studies Group (MDSG). For<br />
more information contact Iain McDonald, Dept. <strong>of</strong> Earth<br />
★<br />
Sciences, Cardiff University, P.O. Box 914, Cardiff, CF10<br />
3YE, United Kingdom; E-mail: mcdonaldil@cf.ac.uk;<br />
Website: http://www.mdsg.org.uk.<br />
Aug. 29–Sept. 3. 21 st International Geochemical<br />
Symposium (IGES) <strong>of</strong> the Association <strong>of</strong> Exploration<br />
Geochemists, Dublin, Ireland. Contact: Eibhlin Doyle;<br />
E-mail: eibhlindoyle@gsi.ie; Web-site: http://www.aeg.<br />
org/Symposia/21stSymposiumTrip/21st_international_<br />
geo chemical_s.htm.<br />
Sept. 7–11. 6 th International Symposium on Environmental<br />
Geochemistry, Edinburgh, Scotland. Contact<br />
Janet Beard, In Conference Ltd., 10b Broughton Street<br />
Lane, Edinburgh, EH1 3LY, Scotland, UK; Tel. +44(0)131.<br />
566.92<strong>45</strong>; Fax +44(0)131.556.9638; E-mail: Janet@<br />
in-conference.org.uk; Website: www.iseg2003.com.<br />
Sept. 8–12. International Congress on Rock<br />
Mechanics “Technology Roadmap for Rock<br />
Mechanics”, Sandton (Gauteng-Johannesburg), South<br />
Africa. For more information, contact Mrs Karen<br />
Norman, The Conference Coordinator, Technology<br />
Roadmap for Rock Mechanics, P.O. Box 61127, ZA-2107<br />
Marshalltown, South Africa; Tel. +27.11.8341273 or<br />
8341277; Fax: +27.11.833.8156 or 838.5923.<br />
Sept. 24–25. CIM Field Conference: Ore Deposits at<br />
Depth-Challenges and Opportunities, Timmins,<br />
Ontario, Canada. For more information, contact Mr.<br />
Damien J. Duff, Manager <strong>of</strong> Geology, Falconbridge<br />
Limited, Timmins Region, P. O. Bag 2002, Timmins<br />
Ontario, Canada, P4N 7K1; Tel.+705.267.8683; E-Mail:<br />
duff@falconbridge.com.<br />
Sept. 28–Oct. 3. <strong>Society</strong> <strong>of</strong> Exploration Geophysicists<br />
(SExG) 73rd Annual Meeting and International<br />
Exposition, Dallas, Texas, USA. For more information<br />
contact, SExG Business Office, Tel. +1.918.497.5500;<br />
Fax +1.918.497.5557; Website: www.seg.org.<br />
Nov. 2–5. Geological <strong>Society</strong> <strong>of</strong> America Annual<br />
Meeting, Seattle, Washington, USA. For information,<br />
contact GSA Meetings Dept., P.O. Box 9140, Boulder, CO<br />
80301-9140, USA; Tel. +1.303.447.2020; Fax<br />
+1.303.447.1133; E-mail: meetings@geosociety.org;<br />
Website: http://www.geosociety.org/meetings/index.htm.<br />
Dec.1–5. Northwest Mining Association (NWMA)<br />
109th Annual Meeting. For information, contact<br />
NWMA, Tel. +1.509.624.1158; Fax +1.509.623.1241;<br />
E-mail: nwma@nwma.org. 1<br />
1 Officers<br />
& Councilors<br />
JANUARY 1, 2003 – DECEMBER 31, 2003<br />
PRESIDENT<br />
Jonathan G. Price<br />
Nevada Bureau <strong>of</strong> Mines & Geology<br />
University <strong>of</strong> Nevada - MS 178<br />
Reno, NV 89557-0088<br />
Tel: +1.775.784.6691 / Fax:<br />
+1.775.784.1709<br />
E-mail: jprice@unr.edu<br />
EXECUTIVE DIRECTOR<br />
Brian G. Hoal<br />
7811 Shaffer Parkway<br />
Littleton, CO 80127<br />
Tel: (720) 981-7882 / Fax: (720) 981-7874<br />
E-mail: director@segweb.org<br />
TREASURER<br />
George R. Ireland<br />
7811 Shaffer Parkway<br />
Littleton, CO 80127<br />
Tel: (720) 981-7882 / Fax: (720) 981-7874<br />
E-mail: treasurer@segweb.org<br />
VICE PRESIDENT REGIONAL AFFAIRS<br />
Noel C. White<br />
P.O. Box 5181<br />
Kenmore East<br />
QLD 4069 Australia<br />
Tel: +61.7.3878.3041 / Fax:<br />
+61.7.3878.7099<br />
E-mail: White.Noel@bigpond.com<br />
REGIONAL VICE PRESIDENTS<br />
David A. Giles, North America<br />
Koh Naito, Asia<br />
José A. Perelló, South America<br />
G. Neil Phillips, Australasia<br />
David T. Rickard, Europe<br />
Laurence J. Robb, Africa<br />
Andrei Tsvetkov, North Eurasia<br />
COUNCILORS<br />
Antonio Arribas R., Jr., USA<br />
John H. Dilles, USA<br />
Craig A. Feebrey, Japan<br />
J. Bruce Gemmell, Australia<br />
Richard J. Goldfarb, USA<br />
David A. John, USA<br />
Duncan E. Large, Germany<br />
A. James Macdonald, Australia<br />
Jeremy P. Richards, Canada<br />
<strong>SEG</strong> FOUNDATION<br />
(Effective January 1, 2003)<br />
Richard L. Nielsen, President<br />
Allan P. Juhas, Vice President<br />
Donald M. Davidson, Jr., Secretary<br />
George R. Ireland, Treasurer<br />
<strong>SEG</strong><br />
NEWSLETTER<br />
7811 SHAFFER PARKWAY<br />
LITTLETON, CO 80127 • USA<br />
NON-PROFIT<br />
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PERMIT #131<br />
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