Martabe - G-Resources

PTAR
MARTABE
Martabe
Geology
Resources & Reserves
Exploration
29th September 2009
Stuart Smith

PTAR
MARTABE
-:Ìf
UPDATE ON NEAR MINE EXPLORATION
UPDATE ON REGIONAL EXPLORATION
lntroduction

PTAR
MARTABE
Martabe CoW occurs in a highly
prospective Plate Margin setting
Not just theory; its visible in
earthquake data
Broad Tectonic Setting
\
,nrn#
OCEANIC
PLATE
-I
S.UNDALAND
9 -to*Il-f;'r|'o'
Eafthquake epicentre data, showing subducting slab

PTAR
MARTABE
¡.1:
t tl
, ^3 lL^ l---^^¿
l^^^^:¿^
many of the largest Au ^.. deposits
Broad Tectonic Setting

p The Sumatran segment of the
Plate Margin is highly productive
for Au
ho lncludes Au-only deposits (LS
and HS Epithermal) and
sediment-hosted
ìr"4'ro includes Cu-Au porphyrystyle
prospects
,ç* The belt has a total gold
inventory of +18Moz
,ôi'
\Ñ
IND¡AN.AUSÏRALIAN
OCEANIC PLATE
5{þ ktn
O High Sulphidation
û Low Suþhidation
I Sedment Hosted

EXPLANATToN
¡ C¡tiês
¡lertab€ Distrlct
I volcanoes
,/ raun ,{ lmicilno
olc Ouatomary Alluy¡um and Colluv¡um
aü Quaternary Rhyodac¡te Tufl Ooba Tufi)
qrr QuatefnaryEssalt4ndes¡to-Dac¡teLåvas
Iertiary lnùuslons and Volcan¡cs (?)
Tert¡sry Volcan¡cs, mostly Andosite
(Angkola Formation)
Te.t¡ary Sedimenl" mostly Saridstons
(Bðrus Formåt¡on)
PTAR
MARTABE
oæ
Uesozo¡c - Paleozo¡c Granire (S¡bolga Compler)
llosozoic - nota \rolcan¡c + m€ta L¡mgstons
(Woyla Group)
Paþozolc . lløso¿olc, meta S'ed¡ment +
Llmestoneg
Paleo:o¡c not¡ Sodiment¡, mostly S¡lBlono
(fapanull Group)
Regional Geological $etÉf;ng
Volcanic, intrusive and
sedimentary rocks with NW
fault bounded structures
H ig hly favorable structural
setting for development of
mineralisation

PTAR
MARTABE
Geology-Exploration Team
Current team has significant project history with continuity of key staff from
PTAR to OxianalOZL to G-Resources
Currently building up with new local and expatriate staff
All geology functions have reporting links to GM-Exploration
Ensure consistency of approach
Transfer of knowledge
As we grow we will ensure close links between Exploration, Resource
Development & Mining to ensure two-way knowledge transfer
So that Mining benefits from the existing knowledge of deposits
So that Resource Development and Exploration benefit from increased
knowledge as we develop the deposits

PTAR
MARTABE
Deposits are of the " High Sulphidation
Epithermal" class
Closely associated with hydrothermal
fluids from an underlying magma
Local Sett¡ng

P¡t 1
r Relatively simple geometry with
shallow dipping component and
steeper elements
r Allows for favourable stripping ratios
r Close relationship between lithology,
alteration, structure and
mineralisation
0.01 to 0,50
0.50 to 1.00
1.00 to 2.50
. dt' r.J
d' ;i"v
P[ I Cro¡. g.clhn -LitÞþgt
2.5f1to 5.00
>= 5.00 Pit 1 Au Block Model - cross secfron

PTAR
MARTABE
Oblique view of Pit 1 Block model coloured by Au; USD700 pit shell
10
P¡t 1r 3D Geometry

PTAR
MARTABE
High Sulphidation Style Quartz Vein Styles
ffi_
Oxide Milky QuarÞ Vein with
Colloform Banded
-..-..ry
æÃ
A

+, Reporting to Australian Joint Ore
Reserves Committee (JORC)
standard
r. Two categories:
¡' Mineral Resource
v lnferred
u lndicated
:, Measured
, Ore Reselve
t Probable
: Proved
Most recent statement
June 2008 OZ Minerals
,, New statement in preparation
ing levelof
geological
-.
ES ORE RESERVES
4-"""'
Measured Proved
Consideration of m in in g, metallurgical, economic, marketin g,
legal, environmental, social and governmental factors
(the "Modifying Factors").
12
..t

PTAR
MARTABE
Resources & Reserves
Mt (s/t Au) (s/t As) Gold (Moz) Silver (Moz)
Measured 3.79 2.9 46 0.35 5.61
Indicated 47.71 1.7 22 2.61 33.75
Inferred 39.65 1.1 13 1.40 16.57
Total 91.15 1.5 19 4.36 55.92
Inferred 36.56 1.0 4 1.18 5.',17
Total 36.56 1.0 4 1.18 5.17
Inferred 10.39 1.1 0.37
Total 10.39 1.1 0.37
TOTAL RESOURCES 138.10 1.3 5.91 61.09
Proven 3.9 2.7 41.8 0.34 5.29
Probable 31.8 1.8 23.9 1.88 24.42
TOTAL RESERVES 35.7 1.9 25.9 2.22 29.71
13

PTAR
MARTABE
Resources & Reselves
new Resources
t, Uluala Hulu (first resource)
Currently preparing new Reserves
P¡t 1
Barani/Ramba Joring/Uluala Hulu
Reserves require metallurgical test work,
pit optimisation etc

Geology
PTAR
MARTABE
Developing and testing our
understanding of the deposits
Geochemistry
For regional work stream sediment
sampling, highly effective
So/ sampling effective at prospect
scale
Geophysics
Electrical methods most effective
Resrsfivity - can be acquire from
aircraft, but detailed data requires
ground acquisition
Magnefrcs - ore magnetically inert; but
magnetics useful for geological
understanding
Exploration Tech n iq ues
15
Maftabe near mine area geophysics (resrstivity) image

PTAR
MARTABE
Near Mine - Resource Extension &
Discovery
Ore that could be treated through
Martabe plant - maximising the
value of the plant
2010 Budget US$6.9M
CoW - New Discovery
Likely to require new processing
facility
Targeting
Au -similar to Martabe
Cu-Au porphyry - similar to
Batu Hijau (Newmont)
2010 Budget US$2.9M
Exploration Strateg ies
SoLrthr Tap.artuli,

PTAR
MARTABE
Existing Deposits
Defining Resources in areas
of known mineralisation (e.9.
Ramba Joring East)
Conversion of Resources to
Reserves
Nearby deposits where
Resources are yet to be
defined (eg Tor Uluala and
Uluala Hulu)
Also nearby exploration
(g eo p hys/g eo logy/g eoch e m )
targets remain to be tested
17
Near Mine Exploration

PTAR
MARTABE
Drilling Continued with 2-3 rigs
Focused on
Barani, Ramba Joring, P¡t 1 East
and Uluala Hulu
Total - 69 holes - 11,304 m
January - August 2009
18
Drilling Status up to August 2009
35.000
3ù.000
25.000
20.000
15.000
10.000
5.000
0
-v=2 *E *
õ = -l¡r Èç =,
=
= EE õ
-o.F
Total holes COW since 1998
. -125 000 m - "near mine"
. 6697.5 m - COW-wide on 5 prospects
Ë= ËF
{- õ õ
J
É, 1

Barani
PTAR
MARTABE
2009 work had two aspects
Within current resource -
increasing confidence
Along strike - adding ounces
2009 Dril ling Results
at
¡l
AßO774, 18.3n@t-38g/t
ì
l\ '
t\ tr
ApsDza6, 19,1m @ 1.88
8.1m @ 1.24
apsFs¡, ¡a.¡. en ¡.ot øfLl, r.rt J
AßDlilO, 72.4m et 6.2 ¡/t lu, r¡.rg c/ì t
APSO697, 19.3m €) 4.98 g/t Au, 9.08 S/t AE
APSO779,2O,9n @ 3.63 zlt Au,3.79 s,lt As, \
APSD7IO,31.7m @ 3.7AeltA¡u,tO,86s,lt As \
APSD785, 25.35m @ 4.51 E,/t Au, 10.05 &/t As
AP5D7:14,32.8m @ 8.96 elt ^!,L.62EltA3
295m @ 16.73 s/t Au, 5.9 3/t Aß
24,6ttt @ 2.97 Elt Au, O.7l Elr îú,
21.h Gt sl29 s/t Au, t.ol s/t As -
27.l'm @ 2.66 Elt Au, 2.92 Bß a4
9.2m e 4.65 8/t Au,2.9l ßlt Aß
,9m @ 1.88 r/t Au, 1.42 slt Aß
2,93 El. Au,z,ts clt Ag
AE;D789, ll.rrm Gu 3,Sr àt eu, O.ZS ¡/t eg
< r:o'r17.2n Érf.O4 8/r Al, 1i18 8/t Ag

Barani
Þ Steep dipping vein system
> High grades developing to
south
Þ Recent intersections
29.5m@16.7 g/t Au
21 .1m@5.29 g/t Au
11.4m@3.51 g/t Au
18.3m@3.41 g/t Au
20

Barani
¡* Resource update
currently underway
p. Further drilling required
BARANI SE€TION N166825
O 25m
LOOKING NORTH
+
+
0.s g/t Au
1.0 g/t Au
21
2.5Om @ 1.309¿/tAu
S.¡gm €r t.¡S g/t ¡rt
16.10m @ 1.77 ß/t Au
@ 2.10 g/t Au
@ r.æ s/t Au
2.40m €t 1.70 s/t Au
1.88 E/t Au
b*
o%- I r.o-z.s
-$ i 2.5-5.0
I | >s.o
j o New Holes
i o old Holes
1rD^
"Q+

Ramba Joring
PTAR
MARTABE
Very similar geology to Pit 1
Recent Results
55.8m@4.27 g/t Au
15.1 m@3 .41 glt Au
12.2m@4.19 g/t Au
35.9m@2.48 g/t Au
Legend
I sil¡caAlteration
S¡l¡ca + Alunite + D¡ck¡te Alterat¡on
Clay Alterat¡on
Chlo¡ite i Calc¡te Alteration
Au ¡n B/t
I 1.0 - 2.5 a New Holes
M:Î z.s-s.o . otd Hotes
I >5.0
)
2009 Drilling Results
APSD761, 3s.9m @ 2.48 s/t Au,2.91 g/t At
APSD754, ss.8sm @ 4.27 Elt A!,7.69 Elr ^9,
10.4m @ 2.69 s/t Au, 16.38 8/r A8
APSD749, 17.2m @ 4.Lg gl¡ Au, 12.1 g/t Ag,"i
22.2m @ L.7t glt A!,2.2 clt. AB
APSD746, 22.1m @ 2.45 g/t 4u,14.45 g,lt AE
APSD776, 10-0m @ 1.3 g/t Au, 5.6 Elt Ag
9.0m @ 1.3 t/t Au ,4.19 eh. Ag,
15.1m @ 3.41 8/t 4u,7.83 8/t Ag
APSD762, 6.2m @ 2.62 glt Au, 4.Ls tlt ^g
18.4m @ 2.43 t/t Au, u.41 g/t At
Ë-

Ramba Joring
Two zones
PTAR
MARTABE
Broadly co-incident with
modelled resistivity highs
Controls on higher grades
still unclear
RAMBA JORING SECTION OB-098
TOOKING NORTH
23
2009 Drilling Results

Ramba Joring
Þ Further work required
Þ Remains open
RAMBA JORING SECTION OB{99
24
rtsm I 121¡ t/t Au

Uluala Hulu
PTAR
MARTABE
Similar to Pit 1 and
Ramba Joring
Recent Results
36m@2.07 g/t Au
1 18m@3.99 g/t Au
19.4m@3.58 g/t Au
82.7m@4.13 g/t Au
lnitial resource being
calculated now
ULUALA HULU PROSPECT
E-W Section Nl7120O
Alteration lnterpreted
2009 Drilling Results
i
I
! 82.7m@a.13 glt Au
uo.1 gft As
I aesojoo ..'. ,'
118m@3.99 glt Au
38.0 gft Ag

Pit 1 East
PTAR
MARTABE
Adding Resource ounces with
additional drilling
2009 Drilling Results
DH Id From (m) mdh Au (g/t) As (s/t) Cu (ppm)
APS1D7.96 95.Í zgi
AFSiD796 144^! 5Af
APSD796 164.t 5.7( 1.3€ 17.5¿ 19(
APSD796 175.( 18.5( 1.57 63.2f 25S
APSD798 142.1 6.3( 1.3! 12.i '141
APSD799 7.1 2.8r 2.8 4.71 tl¡
APS,D79g 22.1 7-4G
APSD799 43.2 2.4( 6.71 129.9€ 132!
APSD799 106.f 5.6( 1.9 ¡ 27.O1 102i
APSD799 135.( 9.0( 1.2e 30.82 27t
APSD799 168.( 11.0( 1.4t 19.6', 23'
APSD799 186.i 11.2( 2,4r 26.2¿ 39i
APSDSOl 112.( 12.0( 2.1( 34.3f 1621
APSDsOl 131.( 9.6t 2.31 22.21 21t
APSDsOl 169.C 20.8( 1.O2 18.21 1',lt
641

P¡t 1
PTAR
MARTABE
Example of ability to convert
Resources to Reserves
lncreased Au-price
By bring¡ng lnferred to
lndicated
Barani, Ramba Joring, Uluala
Hulu also expected to add
ounces during 2010 from
Resource to Reserve
Resources to Reselves
27
Pit 1 2008 Block Modelcoloured by Resource Category

Based on
PTAR
MARTABE
lncreasing our understanding of
deposits
Further geophysics
Re-interpretation of geophysics
'
Near M¡ne Targets
nt^,ià Joi¡ng
Maftabe near mine area geophysics (resrstivity) image

PTAR
MARTABE
Targets range from extensions and
links between existing deposits (eg
Ramba Joring East, Barani South) to
new essentially untested targets (eg
Barani West, Baringin)
Major programs to be initiated in late
2009 and through 2010 to build our
Structu ral understanding
Understanding of volcanic and
sed imentary architecture
Knowledge of hyd rothermal
alteration zoning
Ultimately leading to better targeting,
as well as Resource/Reserve
estimation and Mining
29
Near M¡ne Targets
Maftabe near mine area geophysics (resistivity) image with
defined targets
-'{
l.r
\ +i
I
. l'
rl I\
(2)

PTAR
MARTABE
CoW Exploration
Likely to require new
processing facility
Targeting
Au - similar to Martabe
Cu-Au - similar to Batu
Hijau (Newmont)
Full CoW-wide review
completed with external and
internal people
Priorities set, targets defined
Budget US$2.9M
GoW Exploration

.'' PTAR
MARTABE
Kapur-Gambir District
Multiple prospects, "campscale"
play
Quartz vein Au systems
Complex structural
controls
Most have drilling, but are
poorly understood
Further work required
Significant drill results to be followed up
9.1 m @ 15.29 g/t Au and 1 1 .27glt Ag
4.0m @ 47.1291t Au and 17.689/t Ag
10.4m @ 13aglt Au and 5.079/t Ag
21.1m @ 2.92glt Au and 1.059/t Ag
31
Kapur-Gambir D¡strict

Tani Hill
PTAR
MARTABE
Large scale, possibly
porphyry-related alteration
at surface
Resistivity high at surface
- alteration
Resistivity low and
chargeability high at depth
- possibly sulphide
mineralised porphyry body
Drill test planned
32
Tani H¡ll
Tqni Hill Section 143.350 N - Resistivity
Toni Hill Section 743.j50 N - Chorgeobility

PTAR
MARTABE
Tango Papa
Martabe style alteration and
rock samples
Au up to 12.7 glt
Baning
Sediment-hosted Au (similar
to Sihayo, Sepon)
Rocks up to 4.7 glt Au
Golf Mike
Martabe style
Southern Corridor & Rantu
Panjang
Po rp hyry-style affi n ities
Recon naissance exploration
undenruay
33
Other GoW Targets

Near Mine programmes underway and will be expanded
CoW Exploration review completed, leading to target prioritisation and 2year
exploration plan
34