| PLATINUM-GROUP MINERALS IN RIVERS DRAINING THE GREAT DYKE, ZIMBABWE Thomas OBERTHÜR§, Thorolf W. WEISER, Frank MELCHER...common in the sediments, followed by sperrylite, cooperite, braggite, laurite, rare Pd-Sb-As compounds, and...redistribution of the ore elements. Sperrylite, cooperite/braggite, and laurite appear to be direct descendants...(very stable) → (2) sperrylite (stable) → (3) cooperite/braggite (variably stable/”metastable”) → (4)...Great Dyke, Zimbabwe, alluvial sediments, Pt-Fe alloy, Os-Ir-Ru alloy, sperrylite, cooperite/braggite, |
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Oberthür, Thomas (2018) The Fate of Platinum-Group Minerals in the Exogenic Environment—From Sulfide Ores via Oxidized Ores into Placers: Case Studies Bushveld Complex, South Africa, and Great Dyke, Zimbabwe. Minerals, 8 (12) 581 doi:10.3390/min8120581 |
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 |
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Oberthür, Thomas, Weiser, Thorolf W., Gast, Lothar, Kojonen, Kari (2003) Geochemistry and mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe. Part 2: Supergene redistribution in the oxidized Main Sulfide Zone of the Great Dyke, and alluvial platinum-group minerals. Mineralium Deposita, 38 (3). 344-355 doi:10.1007/s00126-002-0338-8 |
Journal (article/letter/editorial) |
| mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 2: Supergene redistribution in...in the supergene environment. Sperrylite and cooperite/braggite are stable in the oxidized MSZ. In contrast...present in the Makwiro River close to the Hartley Platinum Mine indicates further mineralogical changes...Sperrylite largely remains stable whereas most cooperite/braggite grains have been partly altered or completely...Sulfide Zone Æ Placers Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Editorial handling: O. Thalhammer |
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Oberthür, Thomas, Weiser, Thorolf W., Gast, Lothar, Kojonen, Kari (2003) Geochemistry and mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe. Part 1. Primary distribution patterns in pristine ores of the Main Sulfide Zone of the Great Dyke. Mineralium Deposita, 38 (3). 327-343 doi:10.1007/s00126-002-0337-9 |
Journal (article/letter/editorial) |
| mineralogy of platinum-group elements at Hartley Platinum Mine, Zimbabwe Part 1. Primary distribution patterns...platinum-group element (PGE) mineralization. At the Hartley Platinum Mine, the MSZ is up to some meters thick and...present throughout the PGE subzone of the MSZ, cooperite/ braggite occur mainly in its basal part, and...Æ Main Sulfide Zone Æ Great Dyke Æ Hartley Platinum Mine Æ Zimbabwe Introduction Deposits of platinum-group...Bushveld Complex, South Africa). The Great Dyke of Zimbabwe (Fig. 1) constitutes the world’s second largest |
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Locmelis, Marek, Melcher, Frak, Oberthür, Thomas (2010) Platinum-group element distribution in the oxidized Main Sulfide Zone, Great Dyke, Zimbabwe. Mineralium Deposita, 45 (1) 93-109 doi:10.1007/s00126-009-0258-y |
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...(1) as relict primary PGM (mainly sperrylite, cooperite, and braggite), (2) in solid solution in relict...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) |
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Wilson, A. H., Prendergast, M. D. (2001) Platinum-Group Element Mineralisation in the Great Dyke, Zimbabwe, and its Relationship to Magma Evolution and Magma Chamber Structure. South African Journal of Geology, 104 (4) 319-342 doi:10.2113/gssajg.104.4.319 |
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...the Archaean granites, and greenstones of the Zimbabwe Craton (Figure 1). Aligned approximately NNE, |
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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 |
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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...intruded Archean granites and greenstone belts of the Zimbabwe craton (Worst 1960; Wilson 1996; Fig. 1a). Two...al. (2003). They were collected from the Hartley Platinum Mine in the Darwendale subchamber (Fig. 1c)....Darwendale Subchamber Harare Zimbabwe 0 Meter 19° S 1500 Mimosa Mine Local Road iver ro R Orthopyroxenite |
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Evans, D. M. (2002) Potential for bulk mining of oxidized platinum-group element deposits. Applied Earth Science, 111 (1) 81-86 doi:10.1179/aes.2002.111.1.81 |
Journal (article/letter/editorial) |
| Sulphide Zone (MSZ) mineralization of the Great Dyke, Zimbabwe. The PGE in the sulphide zone occur dominantly... The mothballing of the Hartley mining operation on the Great Dyke, Zimbabwe, at a time of historically...magmatic sulphide-hosted deposits are sulphides (cooperite, braggite and laurite), arsenides (sperrylite)...of partly oxidized Pt mineralization at Hartley mine, Zimbabwe.20 Duyvesteyn, Liu and Duyvesteyn 20 reported...moncheite-dominant (Pt(Te,Bi)2) in the uppermost peak (M1i) to cooperite (PtS) and braggitedominant ((Pt,Pd,Ni)S) in the |
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(2007, February) Geological Society of Zimbabwe Newsletter. Geological Society of Zimbabwe |
Journal (issue) |
| Geological Society of Zimbabwe Newsletter February, 2007 Geological Society of Zimbabwe Newsletter February...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE • Geological Society of Zimbabwe Newsletter...Department, University of Zimbabwe ……………………………………… The Geological Survey of Zimbabwe ………………………………………………… Mining...…………………………………………………… …. 22 2 Geological Society of Zimbabwe Newsletter February 2007 Editorial All the very...endeavours is critical. 3 Geological Society of Zimbabwe Newsletter February 2007 We continued to pursue |
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Oberthür, T., Melcher, F., Gast, L., Wöhrl, C., Lodziak, J. (2004) Detrital platinum-group minerals in rivers draining the eastern Bushveld Complex, South Africa. The Canadian Mineralogist, 42 (2) 563-582 doi:10.2113/gscanmin.42.2.563 |
Journal (article/letter/editorial) |
| are the most common, followed by sperrylite, cooperite, braggite, isomertieite or mertieite I, stibiopalladinite...les plus communs; suivent ensuite sperrylite, cooperite, braggite, isomertieïte or mertieïte I, stibiopalladinite...the Mafic Phase of the Bushveld Complex. To the west are the Leolo Mountains, composed of Main Zone gabbros...the Atok mine and Steelpoort (Fig. 2), the layered sequence dips 10–15° southwest and west. To the east...UG–2 horizon can be traced from close to the Atok mine for over 30 km to the Steelpoort River (Fig. 2) |
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Bowles, John F. W., Suárez, Saioa, Prichard, Hazel M., Fisher, Peter C. (2017) Weathering of PGE sulfides and Pt–Fe alloys in the Freetown Layered Complex, Sierra Leone. Mineralium Deposita, 52 (8) 1127-1144 doi:10.1007/s00126-016-0706-4 |
Journal (article/letter/editorial) |
| the fresh rocks are 1–7 μm across, including cooperite (PtS), isoferroplatinum (Pt 3 Fe), minor tetraferroplatinum...sulfides associated with the primary PGM and cooperite (with <3% Pd) were destroyed to provide the minor...the Freetown Layered Intrusion in Sierra Leone, West Africa, since 1926 and have been extracted from...magmas that intruded into the Archean rocks of the West African Shield during the initial rifting of the...(Bowles 2000b). At Mateki, the ridge is drained to the west by the Alako river and to the east by the Big Water; |
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Barkov, Andrei Y., Zaccarini, Federica - Eds. (2019) New Results and Advances in PGE Mineralogy in Ni-Cu-Cr-PGE Ore Systems. MDPI. doi:10.3390/books978-3-03921-717-5 |
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...Cuprorhodsite CuRh2 S4 , Malanite CuPt2 S4 , Cooperite (PtPdNi)S, Braggite (PtPdNi)S, Vysotskite (PtPtNi)S |
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Mungall, James E. (2005) Exploration for platinum-group element deposits. Mineralogical Association of Canada. |
Book |
| Redistribution in the Main Sulfide Zone of The Great Dyke, Zimbabwe T. Oberthür, F. Melcher 75-96 97-111 6. Placers...Systems: Refining the Classification Using McCreedy West Mine and Podolsky Project Case Studies 163-180 C.E...geochemical surveys M.L. Zientek, S.R. Corson, R.D. West 391-407 19. Exploration and Mining Perspective...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 |
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OBERTHUR, T., WEISER, T. W., MELCHER, F. (2014) ALLUVIAL AND ELUVIAL PLATINUM-GROUP MINERALS FROM THE BUSHVELD COMPLEX, SOUTH AFRICA. South African Journal of Geology, 117 (2) 255-274 doi:10.2113/gssajg.117.2.255 |
Journal (article/letter/editorial) |
| Pt-Fe alloys (together 54%), sperrylite (33%), cooperite/braggite (11%), and stibiopalladinite (2%). This...platinum mine in the northern part of the eastern Bushveld was the Atok Mine (now Bokoni Mine). As the...Bushveld Brakspruit (24°54’56.7’’E, 27°12’53.2’’S). West of Norton, river north of road bridge. 20 kg of...Pt-Pd alloys Pt-Fe alloys Os-Ru-Rh-Pt alloys _Cooperite_-Braggite Bowieite (?) Laurite Sperrylite Hollingworthite*...assigned to native Pt or Pt-Fe alloy have cores of cooperite, braggite or in rare cases, sperrylite. This must |
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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...other trace element contents in pyrite from the Hartley, Ngezi, Unki, and Mimosa mines of the Great Dyke... 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 |
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(2018) MGM volume 82 Supplement 1 Cover and Front matter. Mineralogical Magazine, 82. doi:10.1180/mgm.2018.126 |
Journal (article/letter/editorial) |
| 38), tulameenite (Pt2FeCu), hongshiite (PtCu), _cooperite_–vysotskite (PtS–PdS), laurite (RuS2), erlichmanite...features highlighted by the mineral assemblage. Cooperite in the fresh rocks is rare in the alluvium whilst...Evidence from the rivers draining The Great Dyke in Zimbabwe (Oberthür et al., 2013) provides a view of the...depth of ~2 m overlying weathered bedrock. On the west bank soil overlies gravel in pit BW13. Soil and...PGM are similar. The Alako runs for 2 km along the west side of Mateki Ridge in a small, well defined watershed |
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Cabri, Louis J. (2002) The Geology, Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements. Special Volume 54. The Canadian Institute of Mining and Metallurgy |
Report (issue) |
| PETROLEUM Suite 1210, 3400 de Maisonneuve Boulevard West Montréal, Québec, Canada H3Z 3B8 ISBN 1-894475-27-5...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 |
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Junge, Malte, Oberthür, Thomas, Osbahr, Inga, Gutter, Paul (2016) Platinum-group elements and minerals in the lower and middle group chromitites of the western Bushveld Complex, South Africa. Mineralium Deposita, 51 (7) 841-852 doi:10.1007/s00126-016-0676-6 |
Journal (article/letter/editorial) |
| The dominant PGM are sulfides, namely laurite, _cooperite_-braggite, and malanitecuprorhodsite, followed...mining operations and reworking of old chromite mine dumps from the lower group (LG) and middle group...the Mooinooi operation, as well as from the recent mine production from the nearby Millsell and Mooinooi... which generally agree that the main PGM are _cooperite_-braggite, laurite, Pt-Fe alloys, and minor malanite/...typically dominated by (Pt,Pd)-bismuthotellurides, _cooperite_-braggite and minor sperrylite and sulfarsenides |
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Shcheka, G. G., Lehmann, B., Solianik, A. N. (2005) Pd-bearing oxides and hydrated oxides in mertieite-II crystals from alluvial sediments of the Darya river, Aldan Shield, Russia. Mineralogical Magazine, 69 (6) 981-994 doi:10.1180/0026461056960303 |
Journal (article/letter/editorial) |
| and intergrown with keithconnite [Pd3(Te,Bi)], _cooperite_-braggite, a Pt-Pd-Hg alloy, a (Pd,Pt)9Te phase...2004 )) of mertieite-II, ferroan platinum, and cooperite, similar to the Kondyor PGE-gold placer 75 km...goethite rim is an intergrowth of a braggite-cooperite solid solution [(Pt,Pd)S] with Pt-Pd-Hg alloy...keithconnite, a Pd-Pt-Te phase, Pt-Pd-Hg alloy, Pd-rich _cooperite_-braggite solid solution together with AuAg alloy...weathering processes. PD OXIDES IN MERTIEITE mine, QuadrilaÂtero Ferrifero, Minas Gerais, Brazil. |
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Pracejus, Bernhard - Ed. (2014) The Ore Minerals Under the Microscope (2nd ed.) Elsevier. doi:10.1016/c2012-0-01360-9 |
Book (edition) |
| bluish greys distinct, brownish to bluish 30 Cooperite lamellar Hessite Reflection Colour & Ø Reflectance... Mineral Descriptions Molybdenite in Graphite; Bogala Mine, Sri Lanka 51 Copper, native Synonym(s): Cuivre...of cuprite (bluish grey); North Mine (North Broken Hill Mine; NBH Mine), Broken Hill, Yancowinna Co.,...vein in jasper (red internal reflections); Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey...argentite reaction rim (greenish grey; arg); Monte Narba Mine, San Vito, Cagliari Province, Sardinia, Italy; PPL |
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Osbahr, Inga, Klemd, Reiner, Oberthür, Thomas, Brätz, Helene, Schouwstra, Robert (2013) Platinum-group element distribution in base-metal sulfides of the Merensky Reef from the eastern and western Bushveld Complex, South Africa. Mineralium Deposita, 48 (2) 211-232 doi:10.1007/s00126-012-0413-8 |
Journal (article/letter/editorial) |
| form of discrete platinumgroup minerals such as cooperite/braggite, sperrylite, moncheite, and isoferroplatinum...and US186 (eastern limb, Umkoanesstad farm, Lebowa Mine; US), modified after Cawthorn et al. (2002). The...Hendriks (1976) and in the eastern Bushveld (Lebowa mine) after Schwellnus et al. (1976), modified after...US200 is dominated by Pt-rich minerals, namely cooperite/braggite [(Pt, Pd, Ni)S], moncheite [Pt(Te, Bi)2]...vicinity of the chromitite stringer are dominated by cooperite (50 %) and moncheite (23 %) followed by the unnamed |
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Viljoen, Fanus, Ramakoloi, Ntshebo, Rose, Derek, Reinke, Christian (2015) Mineral Chemistry of (Pt,Pd)-Bismuthotelluride Minerals In the Platreef At Zwartfontein, Akanani Project, Northern Bushveld Complex, South Africa. The Canadian Mineralogist, 53 (6) 1109-1127 doi:10.3749/canmin.1500047 |
Journal (article/letter/editorial) |
| g., in the case of Pt and Pd sulfides such as cooperite and braggite; Dare et al. 2011), or from a telluride...Oktyabrsky et al. 2010). Pt–Pd–(±Ni) sulfides such as cooperite and braggite are the dominant platinum-group minerals...the solid solution of Pt, Pd, and Ni between cooperite, braggite, and vysotskite (Verryn & Merkle 1994...platinum-group-element sulfides (6%; predominantly cooperite), and various Pt– Pd–Sb–Sn–Pb alloys accounting...Lodziak 2007) in South Africa; and the Great Dyke in Zimbabwe (Coghill & Wilson 1993, Oberthür et al. 2003, |
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Bowles, J. F. W., Prichard, H. M., Suarez, S., Fisher, P. C. (2013) THE FIRST REPORT OF PLATINUM-GROUP MINERALS IN MAGNETITE-BEARING GABBRO, FREETOWN LAYERED COMPLEX, SIERRA LEONE: OCCURRENCES AND GENESIS. The Canadian Mineralogist, 51 (3) 455-473 doi:10.3749/canmin.51.3.455 |
Journal (article/letter/editorial) |
| lowest known PGE-enriched layer (Horizon M). Cooperite (PtS) and Pt-Fe alloys were observed in a higher...(usually Pt3Fe) is by far the most abundant PGM and cooperite is a significant component of the assemblage....(RuS2) have also been found in this horizon. Cooperite occurs in a late magmatic, high Ca-amphibole (cannilloite)...The cooperite is often attached to rounded magnetite grains within the amphibole. Where cooperite is located...consists of a 6.5 km thick sequence dipping to the west with an apparent center or top of the intrusion |
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Melcher, F., Oberthur, T., Lodziak, J. (2005) Modification of detrital platinum-group minerals from the Eastern Bushveld complex, South Africa. The Canadian Mineralogist, 43 (5) 1711-1734 doi:10.2113/gscanmin.43.5.1711 |
Journal (article/letter/editorial) |
| carry appreciable concentrations of SiO2 and MgO. Cooperite and braggite, and less commonly sperrylite, are...Pt–Fe sont recouverts d’un mince liseré de PtS. Cooperite et braggite, et à un degré moindre, sperrylite...to analytical results listed in Tables 6–7. a) Cooperite (1) replaced by platinum, which occurs as a homogeneous...AS6435/36. b) Different stages of alteration of _cooperite_–braggite grains (1) replaced by platinum (2)....Pt–Fe alloy Very thin seams of PtS (probably cooperite) mantling Pt–Fe alloy have been observed (type |
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