 | | Journal (article/letter/editorial) | | Main Sulfide Zone at Unki Mine, Shurugwi Subchamber of the Great Dyke, Zimbabwe: Evidence from Petrography...element (PGE) occurrence in the Great Dyke of Zimbabwe, the Main Sulfide Zone (MSZ), is a tabular stratabound...silicate composition study across the MSZ at Unki Mine in the Shurugwi Subchamber was conducted to help place...the mineralization. The PGE-enriched zone at Unki Mine is a ~10 m thick package of rocks ranging from...of sulfide mineralization likely occurred at Unki Mine with primary sulfides occurring in association |  | Oberthur, T., Weiser, T. W., Melcher, F., Gast, L., Wohrl, C. (2013) DETRITAL PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE GREAT DYKE, ZIMBABWE. The Canadian Mineralogist, 51 (2) 197-222 doi:10.3749/canmin.51.2.197 | Journal (article/letter/editorial) | | PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE GREAT DYKE, ZIMBABWE Thomas OBERTHÜR§, Thorolf W. WEISER, Frank MELCHER...in the Shurugwi area, possibly originate from the Archean chromitite deposits of the Shurugwi greenstone...and PGE-oxides (unstable). Keywords: Great Dyke, Zimbabwe, alluvial sediments, Pt-Fe alloy, Os-Ir-Ru alloy...Bushveld Complex of South Africa, the Sudbury district in Canada, and later Norilsk in Russia came into...intrusions (Bushveld, South Africa; Great Dyke, Zimbabwe; Stillwater, USA) that host the overwhelming proportion |  | | Journal (article/letter/editorial) | | Platinum-Group Element Mineralisation in the Great Dyke, Zimbabwe, and its Relationship to Magma Evolution and Magma...Prendergast 1 Carson Close, Greendale, Harare, Zimbabwe. e-mail: marprend@hotmail.com ABSTRACT The platinum-group...magma chamber. Introduction The Great Dyke of Zimbabwe contains the world’s second largest single resource...Mimosa mine is commencing major expansion, open-cast operations recently began at the Ngezi mine and further...further work is being carried out at the Unki prospect (see Figure 1 for locations of the principal deposits) |  | Piña, R., Gervilla, F., Barnes, S.-J., Oberthür, T., Lunar, R. (2016) Platinum-group element concentrations in pyrite from the Main Sulfide Zone of the Great Dyke of Zimbabwe. Mineralium Deposita, 51 (7) 853-872 doi:10.1007/s00126-016-0642-3 | Journal (article/letter/editorial) | | from the Main Sulfide Zone of the Great Dyke of Zimbabwe R. Piña 1 & F. Gervilla 2 & S.-J. Barnes 3 & T...The Main Sulfide Zone (MSZ) of the Great Dyke of Zimbabwe hosts the world’s second largest resource of platinum-group...of the MSZ comprises pyrrhotite, pentlandite, chalcopyrite, and minor pyrite. Recently, several studies...element contents in pyrite from the Hartley, Ngezi, Unki, and Mimosa mines of the Great Dyke by laser ablation...grains or clusters of crystals mostly within chalcopyrite and pentlandite, in some cases in the form of |  | | Journal (issue) | | Geological Society of Zimbabwe Newsletter June, 2009 Geological Society of Zimbabwe G Z S Newsletter...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter ...of the Zimbabwe Craton …………………..……..………….... 9 Karoo Large Igneous Province, Botswana-Zimbabwe .........2008. Relationship between Shamva Danton and Shamva Mine ore bodies …………………………………………………………….. 13 Nomination...……………………….. Geology Department, University of Zimbabwe …………………………………….. Geological Survey Department |  | | Journal (article/letter/editorial) | | Bushveld Complex, South Africa, and Great Dyke, Zimbabwe Thomas Oberthür Bundesanstalt für Geowissenschaften...Complex of South Africa and the Great Dyke of Zimbabwe. Samples were obtained underground, from core...Bushveld Complex, South Africa; the Great Dyke, Zimbabwe; the Stillwater grains, and they are ofthe subordinate...Bushveld Complex in South Africa, of the Sudbury district in Canada, and later Norilsk in Russia grand style...Bushveld Complex; South Africa; Great is Dyke; Zimbabwe; platinum-group minerals; Bushveld Complex in |  | Stribrny, B., Wellmer, F. -W., Burgath, K. -P., Oberthür, T., Tarkian, M., Pfeiffer, T. (2000) Unconventional PGE occurrences and PGE mineralization in the Great Dyke: metallogenic and economic aspects. Mineralium Deposita, 35 (2) 260-280 doi:10.1007/s001260050019 | Journal (article/letter/editorial) | | redistributions should be kept in mind during planning and mine operation. Investigations of unconventional PGE...initial production from mines in the Great Dyke of Zimbabwe has yielded 2.1 t Pt. The remaining 9.54 t are...Russia Stillwater, USA Sudbury, Canada Great Dyke, Zimbabwe Kupferschiefer, Poland Bregu i Bibes, Albania...production, for example those of the Great Dyke, Zimbabwe, ± potential alternatives in the form of unconventional...mineralizations PGE in layered intrusions: the Great Dyke, Zimbabwe Geological setting The ca. 2.58-Ga-old Great Dyke |  | | Journal (issue) | | Geological Society of Zimbabwe Newsletter February, 2011 Geological Society of Zimbabwe G Z S Newsletter...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter ...……………………….. Geology Department, University of Zimbabwe ……………………………………… Geological Survey Department ...Committee, on behalf of the Geological Society of Zimbabwe, would like to offer a sincere vote of thanks...debeer@cadline.co.zw 2 Geological Society of Zimbabwe Newsletter February, 2011 Editorial Here we |  | | Journal (article/letter/editorial) | | platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 2: Supergene redistribution in the oxidized...the Makwiro River close to the Hartley Platinum Mine indicates further mineralogical changes. Sperrylite...Æ Placers Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Editorial handling: O. Thalhammer T. Oberthür...Espoo, Finland Introduction In the Great Dyke of Zimbabwe, economic concentrations of platinum-group elements...created in the course of mining at Hartley Platinum Mine. The present study focuses on the redistribution |  | | Journal (article/letter/editorial) | | Noril’sk–Talnakh field in Russia, in the Great Dyke in Zimbabwe, in the Stillwater Complex in the United States...Southern Africa is used to denote South Africa and Zimbabwe. The PGE industry in both countries is strongly...cover today’s global PGE demand. In 2014, the world mine production of Pt (146,000 kg) was mainly from the...the United States (3660 kg), Canada (8500 kg), Zimbabwe (13,000 kg), Russia (23,000 kg) and South Africa...acquired from PGE producers in South Africa and Zimbabwe. The most important aspects, such as the production |  | Li, Chusi, Ripley, Edward M., Oberthür, Thomas, Miller, James D., Joslin, Gregory D. (2008) Textural, mineralogical and stable isotope studies of hydrothermal alteration in the main sulfide zone of the Great Dyke, Zimbabwe and the precious metals zone of the Sonju Lake Intrusion, Minnesota, USA. Mineralium Deposita, 43 (1) 97-110 doi:10.1007/s00126-007-0159-x | Journal (article/letter/editorial) | | alteration in the main sulfide zone of the Great Dyke, Zimbabwe and the precious metals zone of the Sonju Lake...isotopes . Great Dyke . Sonju Lake Intrusion . Zimbabwe . USA Introduction The debate on the origin of...dominated by chalcopyrite and minor bornite in the Sonju Lake Intrusion and by pyrrhotite, chalcopyrite, pentlandite...intruded Archean granites and greenstone belts of the Zimbabwe craton (Worst 1960; Wilson 1996; Fig. 1a). Two...wt%) of disseminated sulfides (pyrrhotite + chalcopyrite + pentlandite ± pyrite) are closely associated |  | | Journal (article/letter/editorial) | | platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 1. Primary distribution patterns in pristine...element (PGE) mineralization. At the Hartley Platinum Mine, the MSZ is up to some meters thick and is composed...Sulfide Zone Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Introduction Deposits of platinum-group elements...Bushveld Complex, South Africa). The Great Dyke of Zimbabwe (Fig. 1) constitutes the world’s second largest...primary MSZ ores collected at the Hartley Platinum Mine. The present paper reports on the distribution and |  | | Journal (article/letter/editorial) | | Prospecting Ventures Ltd., Southerton, Harare, Zimbabwe With 11 Figures Received November 30, 1998; revised...Sublayers hinaus. Introduction The Great Dyke of Zimbabwe is the second largest resource of platinum group...cuts across the dominantly Archaean rocks of the Zimbabwe Craton (Fig. 1). The craton is bounded by the...Fig. 1. Location of the Great Dyke within the Zimbabwe Craton. The Zambezi and Limpopo metamorphic provinces...area east of the axis in close proximity to the Unki prospect shaft (Fig. 2). The two drill cores (MR87 |  | | Journal (article/letter/editorial) | | in the oxidized Main Sulfide Zone, Great Dyke, Zimbabwe Marek Locmelis & Frank Melcher & Thomas Oberthür...Great Dyke mafic/ultramafic layered intrusion of Zimbabwe, economic concentrations of platinum-group elements...Beneficiation . PGE oxides Introduction The Great Dyke of Zimbabwe is a 2,575.4±0.7-Ma-old mafic/ ultramafic layered...cutting Archean granites and greenstone belts of the Zimbabwe Craton (Prendergast 1988; Oberthür et al. 2002)...common sulfides are pyrrhotite, pentlandite, chalcopyrite, and pyrite that mainly form polyphase aggregates |  | Maier, W.D., Määttää, S., Yang, S., Oberthür, T., Lahaye, Y., Huhma, H., Barnes, S.-J. (2015) Composition of the ultramafic–mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and implications for the origin of the PGE reefs. Lithos, 238. 207-222 doi:10.1016/j.lithos.2015.09.007 | Journal (article/letter/editorial) | | ultramafic-mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and...ultramafic-mafic contact interval of the Great Dyke of Zimbabwe at Ngezi mine: Comparisons to the Bushveld Complex and...contact interval of the Great Dyke of Zimbabwe at Ngezi T mine: Comparisons to the Bushveld Complex...NU 1. SC R Sulfide Zone. The Great Dyke of Zimbabwe is one of the world’s largest layered mafic-ultramafic...Archaean granitoids and greenstone belts of the Zimbabwe craton at T about 2575 Ma (Mukasa et al., 1989; |  | | Book | | Redistribution in the Main Sulfide Zone of The Great Dyke, Zimbabwe T. Oberthür, F. Melcher 75-96 97-111 6. Placers...Refining the Classification Using McCreedy West Mine and Podolsky Project Case Studies 163-180 C.E.G...Sulfide Zone of the Great Dyke, Zimbabwe - Case Study of the Hartley Platinum Mine A.H. Wilson, R.T. Brown ...REDISTRIBUTION IN THE MAIN SULFIDE ZONE OF THE GREAT DYKE, ZIMBABWE T. Oberthür, F. Melcher INTRODUCTION GEOLOGICAL...REFINING THE CLASSIFICATION: USING McCREEDY WEST MINE, AND PODOLSKY PROJECT CASE STUDIES C.E.G. Farrow |  | | Journal (article/letter/editorial) | | Wagner (“ The Geology of a Portion of the Belingwe District of Southern Rhodesia,” Trans. Geol. Soe. S. Africa...Gneissic granite. I n two instances (on Makomisa and Unki farms) tributaries Downloaded by [University of...brought out by Wagner’s mapping in the Belingwe district (see map, ibid.). Perhaps the most striking feature...is more rugged. It narrows on Shikupa farm and on Unki splits into two arms, the easternmost continuing...the middle of the Great Dyke east of the Wanderer Mine. The rock usually weathers into small round blocks |  | | Report (issue) | | the area studied, the localities containing chalcopyrite have the highest grade and highest percent of...galena-sphalerite with chalcopyrite. Any locality or zone containing pyritic-type veins without chalcopyrite is considered...region. Three hundred and thirty-four localities mine dumps and accessible underground workings were examined...predominantly quartz and pyrite, with lesser amounts of chalcopyrite; (2) galena-sphalerite, consisting principally...pyrite, and quartz, with subordinate amounts of chalcopyrite; and (3) composite, consisting of veins of type |  | Tanner, Dominique, McDonald, Iain, Harmer, R.E. Jock, Muir, Duncan D., Hughes, Hannah S.R. (2019) A record of assimilation preserved by exotic minerals in the lowermost platinum-group element deposit of the Bushveld Complex: The Volspruit Sulphide Zone. Lithos, 324. 584-608 doi:10.1016/j.lithos.2018.10.032 | Journal (article/letter/editorial) | | reveal the highest S/Se values in pyrrhotite and chalcopyrite yet recorded in the Bushveld Complex. While...subzone (Figure 3) are mined at the Grasvally Chrome Mine on the Grasvally and Zoetveld Farms (Hulbert and...1980) and occasionally terms inherited from local mine geologists. In some cases, the lack of petrologic...our study. PT S), pyrrhotite (38 wt% S) and chalcopyrite (35 wt% S), as these were the only minerals...mineral, with pentlandite, magnetite and minor chalcopyrite. In one sulphide inclusion, flames of Fe-rich |  | | Book | | born hills appear parallel to Mahagiri range due to mine-waste dumping. Unpaved roads serve the movement...The sky is gloomy throughout the day due to the mine and road dust. Social evils, crime, alcoholism,...education, counseling, and training. Making stringent mine-safety rules is not the solution—it has to be implemented...Ore Group Orissa Mining Corporation Limited Run of Mine Reconnaissance Permit tonnes tonnes per annum/day...4.3 Bornite 1.3.4.4 Chalcocite 1.3.4.5 Chalcopyrite 1.3.4.6 Covellite 1.3.4.7 Cuprite 15 15 |  | | Report (issue) | | Platinum-group element mineralization of the Great Dyke, Zimbabwe. In The Geology, Geochemistry, Mineralogy and...relationships at the currently operating Lac de Iles mine (Ontario), the Marathon deposit in the Coldwell...(Ontario), and the formerly producing Salt Chuck mine (Alaska). They, thus, cover a range of deposit types...Company. The PGE mineralization in the Great Dyke (Zimbabwe), which is the world’s second largest reserve...Exploration activity focussing on the Curich chalcopyrite PGE-bearing veins and disseminated ores of the |  | | Book | | Bushveld Complex, South Africa, and Great Dyke, Zimbabwe Reprinted from: Minerals 2018, 8, 581, doi:10...PGM from China, Russia, South Africa, USA, and Zimbabwe are reported. In his contribution, Oberthür [3]...the presence of disseminated pyrrhotite and chalcopyrite. The occurrence of a rare Pt-enriched tetra-auricupride...discovered in galena-pyrite-chalcopyrite and millerite-bornite-chalcopyrite vein-disseminated ores from...from the Komsomolsky mine of the Talnakh and Oktyabrsk deposits, Noril’sk region, Russia. Due to the small |  | | Corporate Document (Series) | | Adelaide mine, Dundas {Photo: A Wright] Rear cover: Bismuthinite on quartz and siderite, Princess mine {Photo:...Mount Bischoff {Photo: A. Tuma] Siderite, Renison mine {Photo:]. Leeming] While every care has been taken...and mine locations, Dundas mineral field Geology and major deposits, Heazlewood mineral district ......silver mine are considered unconfirmed, as the authors and other recorded investigations of the mine have...gold. The Cleveland tin deposit, Avebury nickel mine, Colebrook Hill copper-bearing axinite skarn and |  | | Report (issue) | | gov/images/periodictable.pdf. Cover. Stillwater Mine in south-central Montana, looking southeast. The...Methods......................................N39 Mine Waste Characteristics.........................................................................N42 Mine Closure...........................................sulfide ore exposed in a stope in the Oktyabr’sk Mine in the Talnakh area, Russia.......................N15 Photograph of the UG2 Chromitite at the Karee Mine in the western part of the Bushveld Complex, South |  | | Journal (article/letter/editorial) | | kink bands. Several sulfide phases like pyrite, chalcopyrite, pentlandite, millerite, and pyrrhotite occur...Chromite deposits occurring near Kondapalle, Krishna district, AP. Jour. Geol. Soc. India, 12, 383387. Chaumba...Main Sulfide Zone at Unki Mine, Shurugwi Subchamber of the Great Dyke, Zimbabwe: Evidence from Petrography...S.R., 1964. Chromite from Kondapalle, Krishna district, Andhra Pradesh. Jour. Economic Geol, 59, 678-683...Kondapalli hills of the Krishna district and the Adjoining area of Khammam district, AP. Report Geol. Surv. India |
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