 | 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) | | RIVERS DRAINING THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA THOMAS OBERTHĂR§, FRANK MELCHER, LOTHAR GAST...combinations of one or two of the aforementioned PGM and laurite, sulfides and arsenides of Rh and Pd, and a wide...placer, Maandagshoek, eastern Bushveld Complex, South Africa. SOMMAIRE Lors de nos campagnes de terrain...diverses combinaisons des MGP dĂ©jĂ citĂ©s et de la laurite, des sulfures et arsĂ©niures de Rh et Pd, et toute...Merensky Reef, on the farm Maandagshoek, close to Burgersfort in the Eastern Bushveld (Figs. 1, 2). Some of |  | | 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 |  | | Journal (article/letter/editorial) | | ULTRAMAFIC PIPES, EASTERN BUSHVELD COMPLEX, SOUTH AFRICA FEDERICA ZACCARINI§ Via B. Ramazzini 15, I-41100...University of the Witwatersrand, PO Wits 2050, South Africa ABSTRACT The ultramafic pipes of Onverwacht...the eastern part of the Bushveld Complex, in South Africa, contain small xenoliths of chromitite that...xenoliths consist of polyphase grains made up of: a) laurite along with unknown IrâNiâFe sulfides and base-metal...palladoarsenide, polymorphs of Pd2As), with accessory laurite and Pd antimonides (stibiopalladanite or sudburyite) |  | | Journal (article/letter/editorial) | | Platinum-group minerals of concentrates from the Driekop platinum pipe, Eastern Bushveld Complex â Tribute...concentrates originating from the Driekop platinum mine, South Africa, collected and first described by...by E. F. Stumpfl (1961), were investigated. Driekop is one of several zoned dunite pipes crosscutting...in the Bushveld Complex. The concentrates from Driekop contain single and polyphase grains, 5 to 500 ”m...stibiopalladinite, moncheite, ruthenium, osmium, and laurite. âExoticâ minerals comprise Pt â Pd â Bi â Sb phases |  | | Journal (article/letter/editorial) | | into Placers: Case Studies Bushveld Complex, South Africa, and Great Dyke, Zimbabwe Thomas OberthĂŒr Bundesanstalt...weathering cycle in the Bushveld Complex of South Africa and the Great Dyke of Zimbabwe. Samples were...PGM and Archean age (e.g., Bushveld Complex, South Africa; the Great Dyke, Zimbabwe; the Stillwater grains...âneoformationâ a the Bushveld Complex in South Africa, of the Sudbury district in Canada, and later Norilsk in...the farm Maandagshoek, then eastern Transvaal, South Africa, led to the discovery of the largest PGE deposits |  | | Journal (article/letter/editorial) | | 0961-0128/82/75/1492-7$2.50 The detailed geologyof the Driekop dunRe pipe and surroundingarea hasbeen adequatelydescribed...lower criticalzone.Accordingto Sehiffries(1982)the Driekop dunitcpipe wasalsoformedby replacement;the cou...locallysplittingthe chromitite. 1452 INFLUENCE OF DRIEKOP Materials Studied and Methods Employed Materials...boreholesV4, DC5, DC6, DC7, and DC8 drilled on the farm Driekop DISTANCEFROM DRIEKOPPIPE [m)- The mineralogictechniquesutilized...these 1. 14:3:3 BOREHOLE NO- boreholesand the Driekop pipe are shownin Figure PIPE Approximate State |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, PO Wits, 2050, South Africa CHRISTOPHER A. LEE¶ Anglo Platinum Geology...Department, PO Box 62179, Marshalltown, 2107, South Africa ROBERT P. SCHOUWSTRA Anglo Platinum Research...1412, South Africa PETER MELLOWSHIP Impala Platinum Mines, PO Box 5683, Rustenburg, 0300, South Africa...and eastern limbs of the Bushveld Complex, in South Africa. Grades for the mined reef interval are uniform...km of strike length, at 5â7 g/t, except for Union mine, where it is currently 8 g/t. The relative proportions |  | | Journal (article/letter/editorial) | | Most of the analyses from the Merensky Reef, Driekop (Tarkian and Stumpfl 1975), Stillwater (Volborth...V:SE Borneo ($tumpfl 8, Torkian 1973) lII : Driekop Mine, Bushveld (TorkianÂą$tumpf11975 I l,]I; $orashigawo...measured on Pt--Fe alloys in dunite pipes from Driekop and in the placers from Borneo and Japan show a...Pt*Pd) S 2 Fig. 8. Compositions of members of the laurite-erlichmanite solid solution series (at.%) plotted...Priehard 1987) show complete solid solution between laurite, R u S 2 and erlichmanite, OsS2 (Fig. 8). Substitution |  | | Journal (article/letter/editorial) | | characterized by the association of braggire,cooperire, laurite,andsperrylitewith platinum-iron alloyand minorPt-Pd...platinum able information on the ores from the Union mine platinumdeposits.When onebf us (EFS) pubby Kingston(1966)...oĆBrynard et al. (1976), cent sperrylite. At Union mine, laurite and ferroVermaakandI-Iendriks(1976), andGasparriniand...Platinum-Group Minerals in the Merensky Reef and in the Driekop Pipe Atok, Mineral Platinum-iron alloy (Pt, Fe)...platinum* Transvaal** and the silicates are common." Driekop*** 6.4 2 50 50.3 2 30 -- Hollingworthite |  | | Report (issue) | | Cubic. Point Group: 2/m 3. hollingworthite or laurite. As grains, to 1 mm, and intergrown with Physical...777 Z=1 X-ray Powder Pattern: Onverwacht mine, South Africa. 3.32 (100), 2.87 (100), 1.74 (100), 2.04...60 11.47 Total 98.3 98.7 100.42 (1) Driekop mine, South Africa; by electron microprobe, corresponding...Occurrence: In chromite in hortonolite dunite (South Africa); as inclusions in chrompicotites (Bulgaria);...Platinum, ruthenian hollingworthite, sperrylite, laurite, iridarsenite, ruthenarsenite, rutheniridosmine |  | | Journal (article/letter/editorial) | | was found in Pt concentratesfrom the Driekop mine, South Africa. Other data on hollingworthite are derived...(Tarkian and Stumpfl, 1975) and the Onverwacht mine, South Africa (Genkin, 1968). Hollingworthite is also associatedwith...easily than would Os and Ru in hollingworthite. Laurite (RuSr) and erlichmanite (OsSr) have the same Pa3...zoneshave lower Ir and responds to the substitution of laurite-erlichmanite for Rh contents, and Fe and Ni values...hollingworthite and and poor in Ni (<0.1 wto/o). pointed may laurite marked by the replacement of 0.4 formula units |  | | Journal (article/letter/editorial) | | GEOLOGICAL EXCURSION TO THE MINING AREAS OF SOUTH AFRICA by Aberra Mogessie, Christoph Hauzenberger...Department of Geology, University of the Free State, South Africa 1. Preface Almost a year ago Aberra Mogessie...(where we had organized past excursions) and South Africa. Having discussed the matter with Christoph...areas of South Africa. We contacted Christoph Gauert from the University of Free State, South Africa to help...help us with the local organization especially to get permission from the different mining companies to |  | | Journal (article/letter/editorial) | | differentiatingthe oresin the vicinity (north and south) of the PilansbergAlkaline Complexfrom thoseof the...host microscopicto submicroscopic inclusionsof laurite and doesnot appear to take Ru into the crystallattice...des; Rh-bearingsulfides(excludingpentlandite);laurite; electrum;sperrylite;isoferroplatinum and its intergrowthswith...pentlandite. A very definite association between laurite and chromiteis observedin both the MerenskyReef...UG-2 layer. The region around the dunite pipe at Driekop (Peyerl,in press)is in effect a microcosmof riched |  | | Journal (article/letter/editorial) | | minerals (PGM's) in ophiolite complexes. Two types of laurite are present. An Os-rich (up to 22% Os) variety...few cases laurite is surrounded by a ruthenian pentlandite containing up to 12% Ru. Laurite and Os-Ir-Ru...Legendre 1982). Auge (1985) records the presence of laurite, Os-Ir-Ru alloys and more rarely irarsite from...mainland. An Os-Ir-Ru alloy and an Os-Ir-rich laurite were described in chromite-rich samples from podiform...grain. Ruthenium- and osmium-rich minerals Laurite Laurite is the only PGM containing Ru as a major PGE |  | | Journal (article/letter/editorial) | | and, paradoxically,many of the discorthe famous Driekop, Mooihoek, and Onverwacht dant bodies of ultramarie...valley in the The platiniferouscore zone in the Driekop pipe eastern BushveldComplex on the farm Maandags-...and mica.This assemblage may be referred to as a Driekop platiniferouspipe (Gain, 1980). Thesebod- platiniferous...priseonly four occurrences;those on the farms Driekop, Iron-Rich Ultramarie Pegmatite Regionaldistribution...is rarely observedbelow the Fo73 to Fo43 and at Driekop the latter is middle of the main zone. In the upper |  | 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) | | cooperite, braggite, native OsâIrâRu alloy, irarsite, laurite, isomertieite, mertieite II, native Pt, native...cooperite, braggite, alliage OsâIrâRu, irarsite, laurite, isomertieĂŻte, mertieĂŻte II, Pt natif, alliage...pyrite. The PtâFe alloy contains inclusions of laurite, irarsite, hollingworthite, and cuproiridsite....is close to the platiniferous dunite pipes of Driekop, Mooihoek and Onverwacht. In this study, the chemical...occurs intergrown with vasilite, PtâFe alloy, laurite, stillwaterite, and has oriented exsolution-type |  | | Journal (article/letter/editorial) | | northernportionsof the Amandelbultsection andAtok mine (Fig. 1) haveplatinum-groupmineral Merensky Reef...cheite,merenskyite,kotulskite)is presentinsteadof Laurite is alsoabundantand is commonlyassociated the Pt-Pd...-Pdtellurides. rite (RuS2)enriched due to the laurite-chromiteas- PotholeMerenskyreef.'Unionsectiontype...normalMerenskyreef ele- edgesat the Rustenburgsectionand the Atok mine. vation). Theplatinum-group minerals ofpotholeMerensky...pothole Brakspruitpipes at Rustenburg,and the Driekop, and normal Merensky reef are Pt-Fe alloy bearing |  | Maier, W. D., Barnes, S.-J., Groves, D. I. (2013) The Bushveld Complex, South Africa: formation of platinumâpalladium, chrome- and vanadium-rich layers via hydrodynamic sorting of a mobilized cumulate slurry in a large, relatively slowly cooling, subsiding magma chamber. Mineralium Deposita, 48 (1) 1-56 doi:10.1007/s00126-012-0436-1 | Journal (article/letter/editorial) | | 1007/s00126-012-0436-1 ARTICLE The Bushveld Complex, South Africa: formation of platinumâ palladium, chrome- and...mines, 2 Union platinum mine, 3 Impala platinum mines, 4 Rustenburg platinum mine, 5 Western platinum and...mines, 6 Crocodile River mine, 7 Messina platinum mine, 8 Atok platinum mine, 9 Maandagshoek section with...with Modikwa platinum mine, 10 Mineral Range and Shebaâs Ridge deposit, 11 Rooipoort, Moorddrift, and...were delayed until the Geological Survey of South Africa collared a series of boreholes (NG1â NG3) at |  | | Journal (article/letter/editorial) | | 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...including stibiopalladinite, hollingworthite, laurite, PGE arsenides and PGE sulfides. The suite of eluvial...platinum deposits of the Bushveld Complex in South Africa. The initial major discovery of platinum in...positive results of this undertaking prompted an SOUTH AFRICAN JOURNAL OF GEOLOGY, 2014, VOLUME 117.2 PAGE |  | Auge, T., Salpeteur, I., Bailly, L., Mukherjee, M. M., Patra, R. N. (2002) MAGMATIC AND HYDROTHERMAL PLATINUM-GROUP MINERALS AND BASE-METAL SULFIDES IN THE BAULA COMPLEX, INDIA. The Canadian Mineralogist, 40 (2) 277-309 doi:10.2113/gscanmin.40.2.277 | Journal (article/letter/editorial) | | isoferroplatinum, braggite and malanite, with sperrylite and laurite, included in pyroxene and plagioclase. The second...isoferroplatine, braggite et malanite, avec sperrylite and laurite, inclus dans les pyroxĂšnes et le plagioclase du...ultramafic intrusive bodies clustered near the central-south margin of the craton, one of which (Sukinda) is...time between the Eastern Ghats Mountains to the south and the Archean Singhbhum nucleus to the north....established because of the lack of exposure. To the south, the Baula Complex is cut by the coarse-grained |  | | Journal (article/letter/editorial) | | s enclosedin silicates,essentiallysperrylite, laurite, and (PtPd)S (eooperite-braggite). The latter alsooccursin...Smallamountsof mineral to be enclosed in chromite is laurite, both in pyrite are present.No pyrrhotitewasobserved...rare. Only one platinum-group vicinity of the Driekop pipe (Peyerl, 1982). No dataon platinum-groupelementmineralogyof...concentrated on the MG-1 and MG-2 served9,3 graiusare laurite inclusionsin chromite. chromititelayersand the...theverylowsulfide other platinum-groupminerals,laurite, (PtPd)S,and contentof the rocksand the very smallsizeof |  | | Journal (article/letter/editorial) | | Springer-Verlag 1975 Platinum Mineralogy of the Driekop Mine, South Africa M. TARKIAN and E. F. STUMPFL* Hamburg...investigation of concentrates from the Driekop platinum mine, South Africa, has resulted in significant additions...stibiopalladinite, PtSb is actually (Pt, Pd)aSb2. The Driekop platinum group minerals association is dominated...pipes. Introduction Platinum Mineralization at Driekop, Eastern Transvaal, occurs in a pipe-like body...of the critical zone of the Bushveld Complex. The mine is now dormant: it was in operation until 1961. |  | | Journal (article/letter/editorial) | | the Platreef at the Sandsloot Mine, northern Bushveld Complex, South Africa D. A. HOLWELL1, I. MCDONALD1...K EY WORDS : PGM, Bushveld Complex, South Africa, Sandsloot mine, Platreef, Pt, Pd, base-metal sulphides...sulphides. Introduction THE Bushveld Complex of South Africa is the largest layered igneous intrusion in...Anglo Platinum, at the Sandsloot and Zwartfontein South pits ~30 km northwest of the town of Mokopane (formerly...the RLS. The geology of the Platreef at Sandsloot Mine has been described by Harris and Chaumba (2001) |  | | Journal (article/letter/editorial) | | platinum concentrates from the Driekop mine, Transvaal, South Africa. Conventional ore microscopy also...the Driekop mine, Transvaal, South Africa, which the author collected during a visit to the mine in 1957...approximate. Geological environment. The Driekop platinum mine is situated in the norites of the critical...remarkable that the occurrence of platinum pipes (Driekop, Onverwacht, Mooihoek) in this part of the Bushveld...dealing with the petrography of the rocks in the Driekop area, failed to establish any relationship between |  | | Journal (article/letter/editorial) | | East Iceland: beudantite, 431 Pengenna (Trewethen) mine, St. Kew: pitchsbone, oligoclase, 587 Sellatur...WALES Adamite, hiibnerite, xliv Billingham anhydrite mine, Durham: aph~hitalite(?), arsenopyrite(?), epsomite...cornubite, 1 Treburland mine, Altarnun: genthelvite, molybdenite, 921 Treore mine, St. Teath: beudantite...jamesonite, mimetite, scorodite, stibnite, 431 Tretoil mine, Lanivet: danalite, garnet, ilvaite, 921 Wheal Betsy...bindheimite, 664 Geevor mine, Pendeen, St. Just-inPenwith: uraninite, 654 Levant mine, St. Just-in-Penwith: |
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