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36 SEG NEWSLETTER No 90 • JULY 2012 CODES Student Chapter STUDENT NEWS Field Trip — South Africa and Botswana In April 2012, the participants of the CODES SEG student chapter field trip visited the mineral deposits of South Africa and Botswana. The trip was led by Ross Large, David Hutchinson, and Chris Large of CODES. It began with a visit to the deepest mine in the world, AngloGold Ashanti’s Mponeng mine, where the group travelled down 3.2 km to see active mining of the Ventersdorp Contact Reef (VCR). This was followed by a trip to the core yard, where several examples of the VCR and the Carbon Leader Reef were closely examined and the sedimentology and mineralogy were explained in detail by Ross Large and by Rob Burnett of AngloGold Ashanti. The next destination was Lonmin’s Marikana core yard to see the world-class PGE mineralization of the Merensky and UG2 reefs of the Bushveld complex. The following day the group crossed the border into Botswana and travelled to Francistown. Based in Francistown, the students and industry participants visited the Mupane gold mine, Mokobaesi uranium prospect, Pheonix nickel mine, Trip participants and hosts pose at the Mupane gold mine. Selebhi-Phikwe nickel-copper mine and the Mowana copper mine. The trip ended with a game drive into the Okavango Delta, where we saw hundreds of elephants, lions with their cubs, and a wide range of other African wildlife. We would like to thank the mines we visited: AngloGold Ashanti, Lonmin, Tati Nickel, Galane Gold, A-Cap Resources, BCL, African Copper and Discovery Metals and our sponsors Barrick, Anglo Gold Ashanti, Teck Resources, Data Metalogenica and CODES for their support. We also thank our industry participants, representing AngloGold Ashanti, Rio Tinto, First Quantum Minerals, and Keiron Munro for their support. 1 Contributed by Dan Gregory, CODES SEG student chapter president CODES Short Courses As part of the 2012 CODES SEG studentindustry trip to South Africa and Bots - wana, two short courses were organized. The first course was on gold, with an emphasis on the Witswatersrand basin in Johannesburg; the second was on the geology of Botswana in Francistown. Ross Large presents at the Botswana geology short course. The gold short course was presented on April 25 in conjunction with the South Africa SEG student chapter. Par - ticipants included undergraduate and postgraduate students, academics and industry professionals. The course started with an introduction to South African geology and metallogeny by Nic Buekes of the University of Johannesburg, followed by a de - scription of the Witwatersrand basin and exploration within the basin by Morris Viljoen of the Univer sity of Witwaters - rand. In the afternoon more detailed studies and new techniques em ployed in studying the Witwatersrand Basin were presented by Nic Beukes, Bradley Guy (UJ), Rob Burnett (Anglo Gold Ashanti), and Ross Large (CODES). In the evening, the South Africa SEG student chapter hosted a braai to welcome the student and industry participants of the trip. The geology of Botswana course was held on April 29 in conjunction with the Botswana Geoscientist Association. The day started with a discussion on the mineral potential and licensing requirements in Botswana by a geological survey representative. The opening talk was followed by a series of presentations focussed on the deposits found in and around Botswana, ranging from coal to base metals to gold. We would like to thank the South Africa SEG student chapter and the Botswana Geoscientist Association for the logistical and financial support in organising these short courses. We would also like to thank our industry sponsors Anglogold Ashanti, Teck Resources, and Barrick Gold for their support. 1 Contributed by Dan Gregory, CODES
JULY 2012 • No 90 SEG NEWSLETTER 37 Colorado School of Mines Student Chapter Abitibi Field Course In May, Colorado School of Mines offered a two-week graduate-level field school to study the metal-endowed Abitibi greenstone belt of northern Ontario and Quebec. Twelve students from CSM, one student from University of Ottawa, and several geologists from Gold Fields, the sponsor of the field trip, were given the opportunity to learn about Archean greenstone architecture, volcanic-hosted massive sulfides, and orogenic gold deposits. Professors Thomas Monecke (CSM) and Mark Hannington (University of Ottawa) led the exemplary field course. Through mapping of key outcrops, logging of exploration drill core, and guided tours of underground and open pit mines, participants had to the opportunity to learn the fundamentals of exploration geology and mine production. In the town of Cobalt, Ontario, participants learned about structural controls on the formation of silver veins and how to identify the variety of Archean rock types present in the region. Next we visited the Timmins gold camp of northern Ontario, the largest known Archean orogenic lode gold camp. While establishing the camp stratigraphy, we mapped komatiite flows with some of the world’s finest spinifex texture and studied ancient submarine volcanic rocks. Moving east, we learnt more about the Archean subaerial successor basins in Kirkland Lake and what it means to map some truly deformed volcanic rocks. More volcanology awaited us in Rouyn-Norand, where we spent several days mapping the host-rock successions of synvolcanic massive sulfides. Abitibi field trip participants on a exposed volcaniclastic sequence near the Horne mine, Noranda, Quebec. In addition to learning about Archean geology, we had the unique opportunity to visit and study several world-class base and precious metal mines throughout the region. Goldcorp allowed access to its Dome underground operation in Timmins. Xstrata Copper organized a core logging exercise, allowing us to establish the mine stratigraphy of the Kidd Creek massive sulfide deposit. We visited the Potter mine and looked at some of the exploration core with David Gamble. Patrick Mercier-Langevin, of the Geological Survey of Canada, gave a tour of Agnico-Eagle’s LaRonde-Penna mine, which included mapping and core logging exercises aimed at teaching us how to discover a gold-rich massive sulfide deposit. Lastly, Osisko gave a tour of their intrusion-centered Malartic deposit, which included a visit to their giant open pit to view operations, followed by a tour of their brand new core facilities and a viewing of the discovery core. We would like to express our appreciation to all of our tour leaders for their time and generous contributions to the field school. Specifically, we thank Gold Fields, the L’Institut Canadien des Mines, de la Métallurgie et du Pétrole, and the CSM Geology and Geological Engineering Department for their generous sponsorship of the field course. 1 Colorado School of Mines SEG Student Chapter STUDENT NEWS Complete SEG student chapter reports and news can be found online: Please visit Online Catalog Available! Available Now! e-doc files Members: $ 15– $ 20 Non-members: $ 20– $ 30 • SEG Journals • Special Publications • Reviews • Monographs • Videos • e-doc files (new) Visit the SEG Online Store today— www.segweb.org/store
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