 | | 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...gabbronorites, a chromitite stringer, plagioclase websterite, plagioclase pyroxenite (pegmatitic in one narrow |  | | 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) |  | | 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) | | Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation of its silicate minerals...Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation of its silicate minerals...Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation of its silicate minerals...economically important Mashava Igneous Complex (MIC) in Zimbabwe was conducted using petrographic and silicate...epidote, chlorite, clinopyroxene, orthopyroxene, plagioclase, and olivine. Spinel, sulfide minerals, and minor |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter February 2015 The annual Summer Symposium has been...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...Dyke, Zimbabwe Freddy Chikwiri …………………………………………………………………….. Hydrocarbon Potential in Zimbabwe - Brent...……………………………… 14 NEWS Geology Department, University of Zimbabwe ……………………………….. The Professor Tom Blenkinsop UZ...………………………………………. 24 2 Geological Society of Zimbabwe Newsletter February, 2015 Editorial Its AGM |  | 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...element contents in pyrite from the Hartley, Ngezi, Unki, and Mimosa mines of the Great Dyke by laser ablation... LA-ICP-MS . Main sulfide zone . Great Dyke . Zimbabwe Introduction Pyrite [FeS2] is a common minor...distribution of PGE in the deposits. In the Great Dyke of Zimbabwe, the world’s second largest resource of PGE after |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter October 2015 No. 3 of 3 of 2015 Heavy mineral concentrate...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ... ARTICLES AND REPORTS A Review of Diamonds in Zimbabwe – a Century On .................................11 12 NEWS Geology Department, University of Zimbabwe – Maideyi Meck ……………… The Professor Tom Blenkinsop... ! ! ! ! ! ! ! ! ! 2 Geological Society of Zimbabwe Newsletter October, 2015 Editorial Welcome to |  | 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 (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) | | in the Musengezi Subchamber of the Great Dyke, Zimbabwe M.D. Prendergast Guesachan, Shielhill Road, Kirriemuir...Great Dyke straddles the boundary between the Zimbabwe craton and the late Archaean Migmatitic Gneiss...and deformation along the northern edge of the Zimbabwe craton at ca. 2.57 to 2.62 Ga. Thrust deformation...IN THE MUSENGEZI SUBCHAMBER OF THE GREAT DYKE, ZIMBABWE Introduction The P1 Pyroxenite layer of the Great...operations (current or ‘moth-balled’) at Mimosa, Unki, Ngezi and Hartley in the southern and central parts |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S Newsletter February 2014 The Victoria Falls Summer Symposium...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...Talk summaries - Victoria Falls Summer Symposium, Zimbabwe, November 2013 .................................... 15 NEWS Geology Department, University of Zimbabwe ……………………………….. Geological Survey Department ………………………………………………...debeer@cadline.co.zw 2 Geological Society of Zimbabwe Newsletter February, 2014 Editorial This Newsletter |  | | 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 |  | | 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...Complex, which has extensive development of plagioclase cumulates underlying the Reef, the MSZ is underlain...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 |  | | Journal (issue) | | Geological Society of Zimbabwe G Z S June 2015 Newsletter No. 2 of 3 of 2015 Fun was had by all...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ...Nickeliferous Archean Madziwa Igneous Complex, Northern Zimbabwe: Petrological Evolution, Magmatic Architecture...Society of Zimbabwe Annual Symposium 28/11/2014, Geology Department, University of Zimbabwe – Summaries...Ben Mapani ……….. The History of Mica Mining in Zimbabwe – Tim Broderick ………………….. Citation for the A.E |  | | Journal (article/letter/editorial) | | mafic and ultramafic rocks that cuts across the Zimbabwe Craton (Fig. 1). The Craton comprises dominantly...Dyke and its chambers and subchambers within the Zimbabwe Craton. The inset marks the location of drill...axis of the Subchamber in close proximity to the Unki prospect shaft (Fig. 1). Both drill cores intersected...pyroxenite. The pyroxenites have 1–15% interstitial plagioclase, together with other late-stage minerals, and...a matrix of postcumulus minerals comprising plagioclase and clinopyroxene, together with pockets of late-stage |  | | 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 |  | 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...antimonides occur as inclusions within individual plagioclase crystals and within alteration assemblages that...isotopes . Great Dyke . Sonju Lake Intrusion . Zimbabwe . USA Introduction The debate on the origin of...intruded Archean granites and greenstone belts of the Zimbabwe craton (Worst 1960; Wilson 1996; Fig. 1a). Two...composed of >80 wt% orthopyroxene with interstitial plagioclase, clinopyroxene, phlogopite, and quartz. Variable |  | 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; |  | | 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)...chromitites, and an upper mafic sequence made up of plagioclase-rich norites, gabbronorites, and olivine gabbros |  | | 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 |  | | 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 |  | 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) | | containing <10 vol. % felsic minerals (e.g. plagioclase) and >90% mafic minerals (e.g. olivine and/or...increase from 2% to 6% vol. % intercumulus plagioclase (Cameron, 1978), or the top of the olivine-rich...above the increase to 6% vol. % intercumulus plagioclase (Teigler and Eales, 1996). The mineralised Volspruit...Figure 3 demonstrates that there is 2 vol. % plagioclase throughout the Volspruit subzone, including the...et al., 2002) as “the amount of interstitial plagioclase in the Waterberg ultramafic rocks commonly exceeds |  | | 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...largest chromite deposits are in South Africa, Zimbabwe, Kazakhstan, Turkey, Finland, and India. 1.8 |  | | 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]...ite vein-disseminated ores from the Komsomolsky mine of the Talnakh and Oktyabrsk deposits, Noril’sk...bushveld complex, South Africa, and Great Dyke, Zimbabwe. Minerals 2018, 8, 581. [CrossRef] Stepanov, S...minerals in the chromitites of the Kokkinorotsos chrome mine, Cyprus. In Ophiolites, Proceedings of the International |  | | 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...Layered Complex (Sierra Leone) and the Great Dyke (Zimbabwe). The Papers, Third Group: Beneficiation and Metallurgy |
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