 | | Journal (article/letter/editorial) | | ELUVIAL PLATINUM-GROUP MINERALS FROM THE BUSHVELD COMPLEX, SOUTH AFRICA T. OBERTHĂR Bundesanstalt fĂŒr Geowissenschaften...ac.at © 2014 December Geological Society of South Africa ABSTRACT The present work provides an initial...alluvial sediments of rivers draining the Bushveld Complex, and from eluvial concentrations at the Onverwacht...were sampled at nine localities around the Bushveld Complex, and heavy mineral assemblages were investigated...including the type locality minerals genkinite, irarsite and platarsite, as well as some additional and |  | | Journal (article/letter/editorial) | | RuS2) 21 while Ir and Rh form sulfarsenides (irarsite IrAsS and hollingworthite RhAsS, 22 respectively)...exploring the Merensky Reef of the Bushveld 31 Complex, South Africa, PGE alloys form up to 80 % of the...at Overysel, in the northern part of the Bushveld 34 Complex, tellurides form more than 57% of the PGM...rich sulfides from several occurrences in the Bushveld Complex (Merensky Reef, Platreef 113 and Driekop...Ir-bearing system. At 1300°C, small (< 10 ”m) euhedral irarsite (IrAsS) grains grow in 194 the sulfide melt |  | | Journal (article/letter/editorial) | | investigation of rocks from one complex, designated UM2, has revealed a complex array of Pt and Pd-bearing...olivine. The discovery of these sperrylite (PtAs2), irarsite (IrAsS) and hollingworthite (RhAsS) inclusions...amphibolites along structures controlled by earlier north-south shearing (Fig. 2). Evidence for this comes from...samples from a drill core (LVFC8) from the UM2 complex. These were shown to be hydrated Pd oxides by McDonald...Most information on mineralisation in the UM2 complex comes from a series of boreholes drilled by the |  | Yudovskaya, M., Belousova, E., Kinnaird, J., Dubinina, E., Grobler, D.F., Pearson, N. (2017) Re-Os and S isotope evidence for the origin of Platreef mineralization (Bushveld Complex) Geochimica et Cosmochimica Acta, 214. 282-307 doi:10.1016/j.gca.2017.07.029 | Journal (article/letter/editorial) | | for the origin of Platreef mineralization (Bushveld Complex) M. Yudovskaya, E. Belousova, J. Kinnaird...for the origin of Platreef mineralization (Bushveld Complex), Geochimica et Cosmochimica Acta (2017),...for the origin of Platreef mineralization (Bushveld Complex) M.Yudovskaya1,2,*, E.Belousova3, J.Kinnaird1...University of the Witwatersrand, Wits 2050, South Africa Institute of Geology of Ore deposits, Petrography...Exploration & Geology, Ivanplats (Pty) Ltd, Mokopane, South Africa * Corresponding author email: marina.yudovskaya@wits |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | Yudovskaya, M., Kinnaird, J., Naldrett, A. J., Mokhov, A. V., McDonald, I., Reinke, C. (2011) FACIES VARIATION IN PGE MINERALIZATION IN THE CENTRAL PLATREEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA. The Canadian Mineralogist, 49 (6) 1349-1384 doi:10.3749/canmin.49.6.1349 | Journal (article/letter/editorial) | | MINERALIZATION IN THE CENTRAL PLATREEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA Marina YUDOVSKAYA§ School of Geosciences...the Witwatersrand, Private Bag 3, Wits 2050, South Africa, and IGEM RAS, Staromonetny 35, Moscow 119017...the Witwatersrand, Private Bag 3, Wits 2050, South Africa Andrey V. MOKHOV IGEM RAS, Staromonetny 35...Johannesburg, PO Box 524, Auckland Park 2006, South Africa Abstract The lateral variation in platinum-group...the magmatic constituents of the Platreef, Bushveld Complex, have been investigated using whole-rock PGE |  | Oberthur, T., Melcher, F., Gast, L., Wohrl, 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) | | MINERALS IN RIVERS DRAINING THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA THOMAS OBERTHĂR§, FRANK MELCHER, LOTHAR...Germany ABSTRACT During field work in the eastern Bushveld, more than 6000 grains of platinum-group minerals...of which are previously unreported from the Bushveld Complex or even unnamed species. The individual PGM...metallurgical treatment of the PGE-bearing ores of the Bushveld Complex. The area of the farm Maandagshoek and environs...minerals, placer, Maandagshoek, eastern Bushveld Complex, South Africa. SOMMAIRE Lors de nos campagnes de |  | | Journal (article/letter/editorial) | | stratigraphically lowest chromitites in the Bushveld Complex. PGMs are dominated by laurite and are free...exploitation of the PGE-rich UG2 chromite layer of the Bushveld layered intrusion had raised awareness of the...The Ranomena mine is located about 5 km to the south of the lower course of the Ivoloina River and 24...which separate these units and extend also to the south of the Bongolovaâ Ranotsara shear zone. Following...is Neoproterozoic and has been thrusted towards south. The four Metasedimentary regions are Neoproterozoic |  | Osbahr, Inga, OberthĂŒr, Thomas, Klemd, Reiner, Josties, Anja (2014) Platinum-group element distribution in base-metal sulfides of the UG2 chromitite, Bushveld Complex, South Africaâa reconnaissance study. Mineralium Deposita, 49 (6) 655-665 doi:10.1007/s00126-014-0538-z | Journal (article/letter/editorial) | | base-metal sulfides of the UG2 chromitite, Bushveld Complex, South Africaâa reconnaissance study Inga Osbahr...UG2 chromitite from the eastern and western Bushveld Complex were studied by whole-rock analysis, ore microscopy...UG2 main seam of the drill core DT46, eastern Bushveld. Pentlandite consistently hosts elevated contents...UG2 . Bushveld Complex . South Africa . LA-ICP-MS . MLA Introduction The Bushveld Complex in South Africa...Vermaak 1995; Cawthorn 1999; Misra 2000). The Bushveld Complex was emplaced at 2.05 Ga in an essentially |  | | Journal (article/letter/editorial) | | concentrates from the Driekop platinum pipe, Eastern Bushveld Complex â Tribute to Eugen F. Stumpfl Frank Melcher...originating from the Driekop platinum mine, South Africa, collected and first described by E. F. Stumpfl...mafic and ultramafic sequence of the Eastern Bushveld Complex. Three similar pipes were locally extraordinarily...were the first to be mined for PGE in the Bushveld Complex. The concentrates from Driekop contain single...high-temperature Pt-rich, and S-poor phase which experienced complex sub-solidus reactions, probably aided by metasomatic |  | | Journal (article/letter/editorial) | | 1975 Platinum Mineralogy of the Driekop Mine, South Africa M. TARKIAN and E. F. STUMPFL* Hamburg, Germany...concentrates from the Driekop platinum mine, South Africa, has resulted in significant additions to, and...geversite (PtSb2), 15% hollingworthite (RhAsS) and irarsite (IrAsS) and 50/o of other platinum group minerals...Os)2As4 does not exist, the mineral in question is irarsite, frequently associated with hollingworthite. PdsCuSba...cuts the norites of the critical zone of the Bushveld Complex. The mine is now dormant: it was in operation |  | | Journal (article/letter/editorial) | | TWEEFONTEIN ULTRAMAFIC PIPES, EASTERN BUSHVELD COMPLEX, SOUTH AFRICA FEDERICA ZACCARINI§ Via B. Ramazzini...University of the Witwatersrand, PO Wits 2050, South Africa ABSTRACT The ultramafic pipes of Onverwacht...Tweefontein, in the eastern part of the Bushveld Complex, in South Africa, contain small xenoliths of chromitite...chromitite, ultramafic pipes, Bushveld Complex, Republic of South Africa. SOMMAIRE Les pipes ultramafiques...Tweefontein, dans la partie orientale du complexe de Bushveld, en Afrique du Sud, contiennent de petits xĂ©nolithes |  | | Journal (article/letter/editorial) | | laurite-erlichmanite (RuS2-OsS2) solid solution series, irarsite (IrAsS), sperrylite (PtAs2), hollingworthite (RhAsS)...a model for the chromitites of the Stillwater Complex in which PGE are initially captured by sulfide...analyses from different mafic-ultramafic layered complex and their absence in Kevitsa chromitite. However...solution series are the most frequent minerals. Irarsite (IrAsS), hollingworthite (RhAsS), anduoite [(Ru...Barkov et al. (2004) from the Penikat Layered Complex. This grain also shows euhedral inclusions of composite |  | | Journal (article/letter/editorial) | | at Two Rivers Platinum Mine, Eastern Bushveld Complex, South Africa J.J. Beukes, C.D.K. Gauert and R.J...University of the Free State, Bloemfontein, South Africa e-mails: Jarlenb7@gmail.com; Gauertcdk@ufs.ac...Giebel@gmx.de. © 2016 March Geological Society of South Africa Abstract Two Rivers Platinum Mine, situated...southern sector of the eastern limb of the Bushveld Complex, extracts Platinum Group Elements (PGE) from...PGM encountered are moncheite, platarsite and irarsite, relatively enriched in Pt, but poor in Pd and |  | | Journal (article/letter/editorial) | | COMPOSITION IN THE ALTERED AND DEFORMED BACURI COMPLEX, AMAPA, NORTHEASTERN BRAZIL HAZEL M. PRICHARD§...CF10 3YE, Wales, U.K. ABSTRACT In the Bacuri complex, Amapa, Brazil, there is good evidence for Pd mobility...can be attributed to the presence of laurite and irarsite, whereas sulfide-bearing serpentinite contains...compositions most typical of chromite from a stratiform complex of continental origin. Keywords: platinum-group...chromite, lateritization, serpentinization, Bacuri complex, Amapa, Brazil. SOMMAIRE Le complexe ignĂ© de Bacuri |  | | Journal (article/letter/editorial) | | (Pd3Sn), kotulskite (PdTe), sperrylite (PtAs2), irarsite (IrAsS), cooperite (PtS), sudburyite (PdSb), and...maficâultramafic intrusions, such as the Bushveld Complex in South Africa, the Norilâsk NiâCuâ (PGE) district...district in Siberia, and the Stillwater Complex in the USA, is commonly thought to be magmatic (Campbell et...Merensky reef in the Bushveld Complex (Li et al. 2004) and JM reef in the Stillwater Complex (Boudreau and McCallum...activity also affected the rocks of the Sudbury Complex and remobilized base metals and PGE (Marshall et |  | | Journal (article/letter/editorial) | | Platreef at the Sandsloot Mine, northern Bushveld Complex, South Africa D. A. HOLWELL1, I. MCDONALD1 AND P...Sandsloot, northern Bushveld Complex, in a variety of lithologies reveal a complex multi-stage mineralization...mineralization. K EY WORDS : PGM, Bushveld Complex, South Africa, Sandsloot mine, Platreef, Pt, Pd,...base-metal sulphides. Introduction THE Bushveld Complex of South Africa is the largest layered igneous intrusion...discovered. The major PGE deposits of the Bushveld Complex are the stratiform Merensky Reef and UG2 chromitite |  | Dare, S. A. S., Barnes, S.-J., Prichard, H. M., Fisher, P. C. (2010) The Timing and Formation of Platinum-Group Minerals from the Creighton Ni-Cu-Platinum-Group Element Sulfide Deposit, Sudbury, Canada: Early Crystallization of PGE-Rich Sulfarsenides. Economic Geology, 105 (6) 1071-1096 doi:10.2113/econgeo.105.6.1071 | Journal (article/letter/editorial) | | orebodies of the Creighton deposit located on the South Range of Sudbury. These predominantly pyrrhotite-rich...embayments at the base of the Sudbury Igneous Complex, and formed small pendants of ore in the footwall...PGE sulfarsenides are euhedrally zoned with an irarsite (IrAsS) core, an outer layer of hollingworthite...PGE-rich deposits, such as the Bushveld Complex in the Republic of South Africa, are hosted predominantly...assimilated into the sulfide melt of the Platreef, Bushveld Complex, from the surrounding country rock may be |  | | Journal (article/letter/editorial) | | studying these low temperature processes. The complex contains a sequence of chromitite layers hosted...those of chromitite layers in the Bushveld complex of South Africa. Although the PGE geochemistry reflects...elements 161 10 400 Latitude South and 40 200 Longitude West. The complex consists of a tabular, arch-shaped...the layered sequence is probably exposed at the south western edge of the intrusion, at the base of the...Transamazonic deformation event (2.2â1.8 Ga), the layered complex underwent low-grade regional metamorphism and was |  | | Journal (article/letter/editorial) | | Platinum-group minerals from the Nuasahi ultramafic-mafic complex, Orissa, India Sisir K. Mondal* Tapan K. Baidya...Baidya THE Precambrian ultramafic-maric complex of Nuasahi (21~ 86~ Orissa, in the Eastern Indian Shield...miehenerite, palladianbismuthian melonite and irarsite from the chromitesulphide assemblage of this sulphide...sulphide mineralized area. The elongated north-south trending ultramaric and marie rocks are emplaced...titaniferous magnetite is preserved with a general north-south trend and easterly dip. Three chromitite horizons |  | | Journal (article/letter/editorial) | | twodistincttypesof platinumdeposits in the Bushveld Complex(reefsandpipes) differ in relativeage,geological...2 50 50.3 2 30 -- Hollingworthite RhAsS Irarsite IrAsS -- 15 -- Kotulskite (Pd, Pt) (Te, Bi)...presence of the sulfarsenides hollingworthite and irarsite. The latter has also beenrecordedfrom the pipe...evolutionof the MerenskyReefdeposits thusemerges as a complex polyphase process.On the macroscale, this concept...minerals,are all but lacking. Widespread evidence (Bushveld, Noril'sk,Werner Lake, New Ramblermine, Hitura) |  | Kojonen, K. K., McDonald, A. M., Stanley, C. J., Johanson, B. (2011) Törnroosite, Pd11As2Te2, a new mineral species related to isomertieite from Miessijoki, Finnish Lapland, Finland. The Canadian Mineralogist, 49 (6) 1643-1651 doi:10.3749/canmin.49.6.1643 | Journal (article/letter/editorial) | | alloy, cooperite, braggite, native OsâIrâRu alloy, irarsite, laurite, isomertieite, mertieite II, native Pt...PtâFe, cooperite, braggite, alliage OsâIrâRu, irarsite, laurite, isomertieĂŻte, mertieĂŻte II, Pt natif...unidentified layered intrusion. The granulite complex of northern Finland forms an arc that extends from...ultramafic intrusions, and for the columbiteâtantalite, complex granitic pegmatites, respectively. The area occurs...The PtâFe alloy contains inclusions of laurite, irarsite, hollingworthite, and cuproiridsite. Fine-grained |  | Prichard, Hazel M., Knight, Robert D., Fisher, Peter C., McDonald, Iain, Zhou, Mei-Fu, Wang, Christina Y. (2013) Distribution of platinum-group elements in magmatic and altered ores in the Jinchuan intrusion, China: an example of selenium remobilization by postmagmatic fluids. Mineralium Deposita, 48 (6) 767-786 doi:10.1007/s00126-013-0454-7 | Journal (article/letter/editorial) | | Au-bearing PGM are located in altered silicates. Irarsite (IrAsS) occurs mainly enclosed in BMS. Padmaite...inclusions from the Platreef deposit in the Bushveld Complex. Barnes et al. (2008) proposed that PGE remain...of about 1 ppm (Chai and Naldrett 1992a). This complex consists predominantly of ultramafic igneous rocks...Jinchuan. Padmaite (PdBiSe), sperrylite (PtAs2), and irarsite (IrAsS) have been described by Prichard et al...the Baijiazuizi complex that overlies schists and banded marbles of the Tamazigou complex; both complexes |  | | Journal (article/letter/editorial) | | Oxidized Ores into Placers: Case Studies Bushveld Complex, South Africa, and Great Dyke, Zimbabwe Thomas OberthĂŒr...(PGM) in the weathering cycle in the Bushveld Complex of South Africa and the Great Dyke of Zimbabwe. Samples...native Pt increase in relative proportion. In the Bushveld/Great Dyke case, the main impact of weathering...detrital/allogenic PGM and Archean age (e.g., Bushveld Complex, South Africa; the Great Dyke, Zimbabwe; the Stillwater...subordinate significance. In the Bushveld/Great Dyke scenario, and in all Complex, USA). Placer deposits in |  | | Journal (article/letter/editorial) | | when the rich primary deposits of the Bushveld Complex in South Africa, the Sudbury district in Canada, and...Maandagshoek farm, in the then eastern Transvaal, South Africa, led to the discovery of the largest PGE deposits...deposits on Earth in the Bushveld Complex in 1924 (Merensky 1924, 1926, Wagner 1929, Cawthorn 1999, OberthuÌr...PGE-bearing layered intrusions such as the Bushveld Complex in South Africa or the Great Dyke in Zimbabwe have...in the Ural Mountains in Russia, the Tulameen Complex in Canada, and the ChocoÌ department of Colombia |
|
