 | | 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) | | ISTRA, ANDI•LVIRAGAS?Ai•RINI Abstract The Atok Platinum Mine is situated in the northeastern portion of...precipitant. Introduction BastardReef Ti•F. Atok Platinum Mine is situated on the farm Middelpunt 420 KT...AND GASPARRINI Fro. 1. Locality map of the Atok Platinum Mine in the eastern portion of the Bushveld Igneous...similar chromitite THE MERENSKY REEF AT THE ATOK PLATINUM MINE seamup to 1 inch (2.5 cm) in thickness(locally...Comparison of these results with those published by MINE 253 TABLE l. Correlation Matrices for Samplesfrom |  | 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 OBERTHÜR§, FRANK MELCHER, LOTHAR GAST...are the most common, followed by sperrylite, cooperite, braggite, isomertieite or mertieite I, stibiopalladinite...placer, Maandagshoek, eastern Bushveld Complex, South Africa. SOMMAIRE Lors de nos campagnes de terrain...les plus communs; suivent ensuite sperrylite, cooperite, braggite, isomertieïte or mertieïte I, stibiopalladinite...between 2 and 3 km wide and runs approximately north–south, subparallel to the layering of the Mafic Phase |  | | Journal (article/letter/editorial) | | normalreef faciesin the centralsectionof the Rustenburg mine are described and discussed. The studyindicatesthat...main platinumgroupmineralsare braggite($8 vol %),cooperite (17 vol %), moncheite (15 vol %), laurite (8 vol...rangesandsubstitutional trends.The reflectedlightproperties of cooperite and braggite,aboutwhicha confusion stillexistsin...publishedlocationand analysesof discrete at the Union mine where a considerablythicker facies platinum-groupmineralsin...1924, much admirablework wasdone by Cooper platinum mine, and Schwellnuset al. (1976) on the (1928, 1929) |  | Cabri, Louis J., Laflamme, J. H. Gilles, Stewart, John M., Turner, Kent, Skinner, Brian J. (1978) On cooperite, braggite, and vysotskite. American Mineralogist, 63 (9-10) 832-839 | Journal (article/letter/editorial) | | AmericanfrIineralogist,Volume63, pages832-839,I 978 On cooperite,braggite,and vysotskitel Louts J. Cesnt, J. H...Abstract phase Detailedmineralogicalanalysesol cooperite,braggite,and vysotskite,togetherwith of identity...uncertaintyregarding to be PdS vysotskite (Pt,Pd)S and cooperite(PtS;P4r/mmc),one may considerbraggite (Pd,Pt)S(P4z/m)'...its true significancecan only be guessedat. Cooperite,braggite,and vysotskiteare the only PtPd sulfide...with ideal compositions in the system Pt-Pd-S. Cooperite is ideally PtS, braggite (Pd,Pt)S, and vysotskitePdS |  | | Journal (article/letter/editorial) | | mineralogyof the MerenskyReefat the Impalaplatinummines,South Africa, hasbeen investigated.Polishedsectionswere preparedfrom...•3 Rustenburg Platinum Mine .4 WesternPlatinum Mine •S Atok Platinum Mine F[c.1. Distribution ofthemaficportion...Investigations located in the eastern Transvaal, South Africa. Cabri (1981) hassummarizedthe platinum-groupmineral...whole;Schwellnus et al. (1976), the reef in the vicinity of Atok mine in the northeasternportion of the BushveldComplex;...Brynardet al. (1976),the reef at Westernplatinum mine in the western Bushveld. Method of Investigation |  | Barkov, A. Y., Martin, R. F., Kaukonen, R. J., Alapieti, T. T. (2001) THE OCCURRENCE OF Pb Cl (OH) AND Pt Sn S COMPOUNDS IN THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA. The Canadian Mineralogist, 39 (5) 1397-1403 doi:10.2113/gscanmin.39.5.1397 | Journal (article/letter/editorial) | | THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA ANDREI Y. BARKOV§ AND ROBERT F. MARTIN Department...the Merensky Reef, Bushveld layered complex, South Africa. This seems to be the first reported occurrence...minerals are members of the braggite series, cooperite (which forms large intergrowths with braggite:... mafic-ultramafic rocks, layered intrusion, South Africa. SOMMAIRE Nous documentons la présence d’une...platine: membres de la série de la braggite, cooperite (en intercroissance avec la braggite, atteignant |  | | Journal (article/letter/editorial) | | Geology, University of Pretoria, Pretoria 0002, South Africa. e-mail: mierkle@postino.up.ac.za; wiebke.grote@up...ac, za © 2008 September Geological Society of South Africa ABSTRACT Gold-rich alloys with variable ¡imounrs...investigation of such grains from Rustenbutg Platinum Mine (Kingston and El-Dosuky, 1982) revealed that many...inclusions are not restricted to Rustenburg Platinum Mine and can be observed in coarse metallic gold from...El-l>(),suky (1982) and Schwellnus et al., (1976), SOUTH AFRICAN JOURNAL OF GEOLOGY Kingston & ROLAND |  | | Journal (article/letter/editorial) | | Abstract The Merensky Reef at the Western Platinmn mine differs in many respectsfrom the reef at its type...an extensive description (Wagner, 1929) of all South African deposits. The 1929 volume included a mi...mineralogybetween the Rustenburg ThE Western Platinum mine is situatedon the farm with those of the reef at...RUSmENBUR •• ..... WESTERN PLATINUM PRETOR[A MI MINE FIG.1. Distribution of themaficzoneof theBushveld...platinum-groupmineralogyof the Merensky Reef at Atok in the eastern portion of the BushveldIgneousComplex |  | | Journal (article/letter/editorial) | | Mineralogy and Petrology (2000) 68: 63±73 Synthetic ``Cooperite'', ``Braggite'', and ``Vysotskite'' in the system...Sciences, University of Pretoria, Pretoria, South Africa With 6 Figures Received October 1, 1998; revised...observed at 1100 C are ``cooperite'' and a melt, at 1000 C ``cooperite'', ``braggite'', and a melt...melt and at 900 C ``cooperite'', ``braggite'', ``vysotskite'', Ni1ÿxS, and a melt. At 1100 C the maximum...Pd-free ``cooperite'' is 2.7 atomic per cent and the Pd-content limit in Nifree ``cooperite'' is 12.8 |  | | Report (issue) | | a = 5.967 Z=4 X-ray Powder Pattern: Vermilion mine, Sudbury, Canada. 1.801 (100), 0.777 (90), 1.148...42.8 (2) 43.44 Total 99.68 100.00 (1) Vermilion mine, Sudbury, Canada; by electron microprobe, corresponding...merenskyite, kotulskite (Shiaonanshan, China); also cooperite, laurite. Distribution: In Canada, at the Vermilion...mines, Algoma district, near Sudbury, Ontario. In the USA, at the New Rambler Cu–Ni mine, Medicine Bow...Co., Wyoming; in the Key West mine, east of Moapa, Bunkerville district, Clark Co., Nevada; and from the |  | | Journal (article/letter/editorial) | | L E Roland K.W. Merkle Æ Sabine M.C. Verryn Cooperite and braggite from the Bushveld Complex: implications... Abstract Analyses of the Pt-Pd±Ni sulphides cooperite, braggite, and vysotskite reported from worldwide...continuum of compositions between vysotskite and cooperite, with no obvious miscibility gap. This is contrary...between cooperite and braggite, and the established compositional gap between co-existing cooperite and braggite...only unambiguous way of distinguishing between cooperite and braggite is to obtain structural information |  | | Report (issue) | | world ............ 3 Platinum deposits in South Africa ............. 3 Major platinum deposits in...PRODUCING AREAS OF THE WORLD Canada, Colombia, South Africa, and Russia have been the major producers of...resources by the U.S. Bureau of Mines indicate that South Africa has over 2,000 million ounces; U.S.S.R., 400...Columbia, 5 million ounces. Platinum Deposits in South Africa The Bushveld Igneous Complex, a stratiform intrusion...major mines in the Merensky Reef include Bafokeng South, Bafokeng North, and Widebeestfontein operated by |  | | Journal (article/letter/editorial) | | the base metal sulfides. Idiomorphic braggite, cooperite, andlaurite,withnilnorsperrylite, are themajo...--589.6 m --590.4 m --543.5 m 6-6 north 7-1 south 7-1 south --1240 m Clino- pyroxene Feldspar Olivine...Sources:1-7. Farm Zwartklip 405 KQ--Union Platinum Mine (van Zyl, 1960,p. 43); 8. Farm Turffontein302 JQ--Rustenburgarea...(1972); 11-12. Farm Zwartklip 405 KQ--Union Platinum Mine (van Zyl. 1960, p. 35); 13. Sample Z280, borehole...easternTransvaal; "This is also the case in the Rustenburg district, where the principal platinum carriers are a layer |  | | Journal (article/letter/editorial) | | University] at 17:41 09 June 2016 TaEnaleh, Noril’sk District, Siberia, Russia U ntil a few years ago, the...fact, this find and a historical locality in South Africa for which specimens are not available represented...layered intrusive bodies such as the Bushveld (South Africa) and Stillwater (Montana) Complexes. In addition...wide array of other unusual minerals, including cooperite, laurite, kotulskite, merenskyite, iridium-osmium...Great Eastern mine, Clark County, Nevada. It is an ore mineral in the active Pt-Pd mine and related occurrences |  | | Journal (article/letter/editorial) | | Sciences, University of Pretoria, Pretoria 0002, South Africa ABSTRACT Results of experimental investigations...encountered in the experimental runs are synthetic cooperite [(Pt,Pd,Ni)S], synthetic braggite [(Pt,Pd,Ni)S]...quenched sulfide liquid, and Ni1–xS. Synthetic cooperite is stable to temperatures above 1200°C, whereas...the system PtS–PdS– NiS, Ni-saturated synthetic cooperite, braggite, and vysotskite coexist with Ni1–xS...synthetic cooperite coexists with Ni1–xS, and synthetic braggite and Pd-bearing synthetic cooperite coexist |  | | Journal (article/letter/editorial) | | platinum able information on the ores from the Union mine platinumdeposits.When onebf us (EFS) pubby Kingston(1966)...oœBrynard et al. (1976), cent sperrylite. At Union mine, laurite and ferroVermaakandI-Iendriks(1976), andGasparriniand...Minerals in the Merensky Reef and in the Driekop Pipe Atok, Mineral Platinum-iron alloy (Pt, Fe) Sperrylite...-- 37.6 15.4 2.1 -- 4.0 Outo- kumpu, Vauze mine, Finland** Quebec*** 21.1 15.6 30.9 -- 0.1 1.3...mechanismfirst copper deposits,irrespectiveof the close local assuggested by Rucklidge. The late positionof memsociationof |  | | Journal (article/letter/editorial) | | Compositional variation of cooperite, braggite, and vysotskite from the Bushveld Complex SABINE M. C...Pretoria, 0002 South Africa Abstract The compositions of coexisting and individual cooperite (ideally PtS)...Merensky Reef of the Bushveld Complex, as well as cooperite, braggite and vysotskite (ideally PdS) grains...is a clearly defined miscibility gap between cooperite and braggite, but no evident gap between braggite...and vysotskite. Partition coefficients between cooperite and braggite are determined on coexisting phases |  | Li, C., Ripley, E. M., Merino, E., Maier, W. D. (2004) REPLACEMENT OF BASE METAL SULFIDES BY ACTINOLITE, EPIDOTE,CALCITE, AND MAGNETITE IN THE UG2 AND MERENSKY REEF OF THE BUSHVELDCOMPLEX, SOUTH AFRICA. Economic Geology, 99 (1) 173-184 doi:10.2113/gsecongeo.99.1.0173 | Journal (article/letter/editorial) | | UG2 AND MERENSKY REEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA CHUSI LI,† EDWARD M. RIPLEY, ENRIQUE MERINO...Sciences, University of Pretoria, Pretoria 0002, South Africa Abstract Interaction of base metal sulfides...an area of 240 × 350 km situated in northern South Africa (Fig. 1). The complex is subdivided into five...and Western platinum mines. RSA = Republic of South Africa. concentrations that vary from parts per million...contact UG2-1155.35 3 cm above the base of UG2 Mine name and sample number Not examined 4 sulfides |  | | Journal (article/letter/editorial) | | the Merensky Reef at Bafokeng Rasimone Platinum Mine (BRPM) are described. A model for the formation...magma emplacement owing to interaction with the local Transvaal sediments. As a result, mechanical separation...The 206 Ga magmatic event recorded in southern Africa led to the formation of several layered intrusions...Nkomati deposit, located c. 50 km to the east of the South Eastern Bethal Limb (De Waal et al., 2001; Li et...Since its discovery the Bushveld Complex in South Africa has attracted unprecedented interest owing to |  | | Journal (article/letter/editorial) | | PLATINUM-GROUP MINERALS FROM THE BUSHVELD COMPLEX, SOUTH AFRICA T. OBERTHÜR Bundesanstalt für Geowissenschaften...ac.at © 2014 December Geological Society of South Africa ABSTRACT The present work provides an initial...Pt-Fe alloys (together 54%), sperrylite (33%), cooperite/braggite (11%), and stibiopalladinite (2%). This...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 |  | | Journal (article/letter/editorial) | | maximum thickness at the eastern flank of the Rudniy district (Fig. 1). Petrological zoning is characterized...minerals such as a Pt-Fe alloy, sperrylite and cooperite. Although overall concentration of Rh is negligible...Au-Ag minerals atokite Au-Ag alloy Au-Ag-Hg alloy cooperite hessite hollingworthite kotulskite majakite menshikovite...sulfide ores taken from trenches in the Rudniy district and from boreholes (Fig. 1). PGE minerals from...exocontact (M–O). A Crystal of Ptbearing atokite; B cooperite (PtS) with chalcopyrite (CuFeS2); C palladoarsenide |  | | Journal (article/letter/editorial) | | 4000, South Africa AND ROGER N. SCOON Postnet Suite 291, Private Bag X31, Knysna 6570, South Africa...of the eastern limb of the Bushveld Complex, South Africa (Fig. 1). The original discovery of the Merensky...contributions from this area to date deal with the Atok mine, for many years the only platinum producer in...Driekop, Maandagshoek, and Winnaarshoek properties, south 971 972 MITCHELL AND SCOON FIG. 1. Schematic...referred to in the text also shown are: 1 = Atok platinum mine, 2 = Maandagshoek, 3 = Thorncliffe, 4 = Brits |  | | Journal (article/letter/editorial) | | of Pretoria, Pretoria, South Africa, 2 Messina Ltd., Johannesburg, South Africa With 7 Figures Received...1978; Hatton and Von Gruenewaldt, 1987). In the south, an anticlinal feature in the floor rocks, the Steelpoort...critical zone from 1500 m north of the fault to 700 m south of the fault. Lack of outcrop and mining activity...about 5000 m. The rocks strike E - W and dip to the south, with dips increasing from about 50-55 ° in the...encompass the two chromitite layers, are developed. Local thickening of the UG-2 pyroxenite is sometimes accompanied |  | | Journal (article/letter/editorial) | | African Localities T o complement the Minerals of Africa theme of the 2002 Tucson Gem and Mineral Show,...88; Namibia is next with 73; the Republic of South Africa is third with 65; together they represent about...immediately leap to mind at the very mention of Africa, David Livingstone (18 13-73) and Henry Morton...for them, but neither species was first found in Africa; Mexico and Peru are the type localities for livingstoneite...discovered in a famed Kimberley diamond pipe in South Africa (see Who’s Who in Mineral Names by Tarassoff |
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