 | | Journal (article/letter/editorial) | | of Geology, Rhodes University, Grahamstown, South Africa Abstract The occurrence of spheroidal, ovoid...embayed plagioclase inclusions within cumulus bronzite and olivine grains of both pyroxenites and norites...complex of South Africa underlies an area of some 450 x 370 km, with the mafic rocks of its Rustenburg Layered...extends westwards for 150 km from the Pretoria district to the Pilanesberg (see inset map, Fig. 1), and...ultramafic assemblage of dunites, harzburgites, bronzite pyroxenites and chromitites. The first appearance |  | | Journal (article/letter/editorial) | | Muskoxintrusion and other layered intrusions,in Harthe platinum-groupelementlevelsin both the reef graves,R. B...Petrology,v. 21, p. 685-719. onlyhavearisenif the platinum-groupmetalsstored --1986, Conventionin aid of... 1183-1225. pile below. Naldrett,A. J., 1981, Platinum-group elementdeposits:Canadian Inst. Mining Metall...Ballhaus,C. G., and Stumpfi,E.G., 1986, Sulfideand platinum ECON. GEOL., v. 81, p. 1105-1117. mineralizationin...BushveldComplexes: Evidencefor transportof the platinum-groupelementsby C1- Vermaak,C. F., 1976, The |  | | Journal (article/letter/editorial) | | theMererisky Reefin 1924,surprisingly of Rustenburg Platinum Mines, are listed in the little work hasbeenpublished...ZK 9 Borehole ZK 9 Borehole ZK 7 Union Crosscut Union Crosscut Union Crosscut Borehole TRF1 --588.5 m...m --589.6 m --590.4 m --543.5 m 6-6 north 7-1 south 7-1 south --1240 m Clino- pyroxene Feldspar Olivine...5 15.0 18.0 13.0 41.0 9. Rustenburg Platinum Mines 10. Rustenburg Platinum Mines 73.0 51.7 25.0 I 1...Quartz. Sources:1-7. Farm Zwartklip 405 KQ--Union Platinum Mine (van Zyl, 1960,p. 43); 8. Farm Turffontein302 |  | | 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..................... 50 4.2 Unidentified Non-Platinum-Group Phases .......................................................... 69 5.1 Overview of South African Occurrences ........................... |  | | Journal (article/letter/editorial) | | Springer-Verlagt991 Petrogenesis of the Merensky Reef in the Rustenburg section of the Bushveld Complex D . M . Nicholson...petrogenetic model for the Merensky Reef in the Rustenburg section of the Bushveld Complex has been developed...Merensky Reef is famous for its enrichment in the platinum group elements (PGEs), and its remarkable regularity...pegmatoid and associated rocks in the Rustenburg section of Rustenburg Platinum Mines in the southwest sector...petrographically and by electron microprobe. At Rustenburg the reef ideally is constituted as a pegmatoidal |  | Naldrett, Anthony J., Gasparrini, E. C., Barnes, Stephen J., Von Gruenewaldt, G., Sharpe, M. R. (1986) The upper critical zone of the Bushveld Complex and the origin of merensky-type ores. Economic Geology, 81 (5) 1105-1117 doi:10.2113/gsecongeo.81.5.1105 | Journal (article/letter/editorial) | | SouthAfrica E. C. GASPARRINI, MinmetScientific,6651 North CampbellAvenue,No. 102, Tucson,Arizona 85718 S...The "Mg number" [Mg/(Mg + Fe) atomicratio] of bronzite in eachunit at the top of the criticalzoneof the...hydrothermalor magmaticfluidsto enrichthe sulfidesin platinum-groupelements.There are no featuresin the rocksto...10sthatappeartoapplyin thecaseofmostmagmatic that platinum-groupelement partitioningincreases ores.The secondis...all magmaticsulfidedeposits. been enriched in platinum-groupelementssubseIn this paper, we report new |  | | Report (issue) | | Economic Geology of the Platinum Metals By JOHN B. MERTlE, ]R. GEOLOGICAL SURVEY PROFESSIONAL PAPER...PAPER 630 A summary report on the geology of the platinum deposits of the world, with a discussion of the...the chemistry and mineralogy of the platinum group of metals and a comprehensive bibliography UNITED...production _____________________________ -----Platinum metals _____________________________ ----- __...alloys of platinum metals ____________ _ Chemical compounds of platinum metals ______ _ Platinum deposits |  | | Report (issue) | | Federal Republic of Germany, the Republic of South Africa, and the United States of America Major geologic...Federal Republic of Germany, the Republic of South Africa, and the United States of America 1984 C I...Products Section, U. S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 FOREWORD...(EMR), Geological Survey of Canada; Ian Goldberg, South African Department of Mineral and Energy Affairs...each country having a major chromite deposit or district--------------------------------7. By economic |  | | Journal (article/letter/editorial) | | follows well-establishedcrystallizationsequenceson local and secular scales, although sequencesindicated...suite,which has an observedthicknessof 245 natesa bronzite-plagioclase cumulate,gabbroa plagioclase- meters...abbreviationsmay be used: Mererisky Reef (M.R.), Rustenburg Platinum Mines (R.P.M.), base metal sulfides (BMS)...deposition of magmaticsedi- are not available in South Africa; I therefore trust ments,thus accordingthem...Bushveldmagmafor that porprogressivelytoward the bronzite-chromite-plagio-tion of the Critical Zone. Magma |  | | Journal (article/letter/editorial) | | Zones of the northwestern Bushveld Complex, South Africa* H.V. Eales a, W.J. de Klerk b and B. Teiglera...University, Grahamstown (South Africa) bAlbany Museum, Grahamstown (South Africa) (Received May 17, 1990;...Zones of the northwestern Bushveld Complex, South Africa. Chem. Geol., 88: 261-278. During deposition...exposures of the complex, centered on Rustenburg Platinum Mines, Union and Amandelbult Sections. It focuses...Survey, through the deep footwall to platinum-mining development at Union Section. Borehole NG3, covering |  | | Journal (article/letter/editorial) | | the UG1 chromitite (UGIFW unit) at RPM Union Section Platinum Mine Rosetta Stone of the Bushveld Upper Critical...of Geology, Rhodes University, Grahamstown, South Africa AND F.J. KRUGER Bernard Price Institute, University...University of the Witwatersrand, Johannesburg, South Africa Abstract The UG1 Footwall unit is a layered...Critical Zone, and is c. 300m thick at Rustenburg Platinum Mines, Union Section, where it shows an oscillatory...residua, from which sodic labradorite and Mg-poor bronzite were crystallizing. The depleted liquid is equated |  | | Journal (article/letter/editorial) | | interest, such as 21 redistribution of the platinum group elements (PGE), have yet to be established...the Atok section Stratigraphic relations The Atok mine is in the northeastern part of the Bushveld Complex...the mines in the western Bushveld Complex. At Rustenburg, for example, the Merensky reef comprises a pegmatoidal...Mathez et al. (1994). The core comes from the Atok mine and extends from about 10 m below the Merensky reef...major element and REE contents) that exposed in mine walls. A description of the lithologies and modal |  | Eales, H. V., Marsh, J. S., Mitchell, A. A., de Klerk, W. J., Kruger, F. J., Field, M. (1986) Some geochemical constraints upon models for the crystallization of the upper critical zone-main zone interval, northwestern Bushveld complex. Mineralogical Magazine, 50 (358) 567-582 doi:10.1180/minmag.1986.050.358.03 | Journal (article/letter/editorial) | | of Geology, Rhodes University, Grahamstown, South Africa A Bs x RACT. Ratios between elements Mg, Fe...geochemistry, crystallization, Bushveld complex, South Africa. M o D EL S for the origin of layered complexes...Mineralogical Society laboratory studies focused on the north-western limb of the Bushveld complex, and extends...locality maps and details of the succession at Rustenburg Platinum Mines, U n i o n Section, and to yon Gruenewaldt...acknowledgement is made. Cyclic units at R . P . M . Union Section In any orderly sequence of layers ABCABCABCA |  | | Journal (article/letter/editorial) | | the high-gradechromitire members,together with bronzite-chromiteovergrowths on xenoliths and chromite...high-gradechromititemembershas crystallizedin part in situ. Bronzite and chromitevary systematicallyin grain size and...in Cr and Fe, subsequently crystallizedto give bronzite,more chromite,and minor plagioclase. Downwarddiffusioninto...D. F. Frasch•, Manager,Mineral SurveyDepartment,Union CarbideOre Company,was in administrative chargeandencouraged...samplingand for loggingsomeof the drill holes. To Union CarbideOre Company,we are greatlyindebtedfor makingmaterialsand |  | Crocket, J. H., Teruta, Y., Garth, J. (1976) The relative importance of sulfides, spinels, and platinoid minerals as carriers of Pt, Pd, Ir, and Au in the Merensky Reef at Western Platinum Limited, near Marikana, South Africa. Economic Geology, 71 (7) 1308-1323 doi:10.2113/gsecongeo.71.7.1308 | Journal (article/letter/editorial) | | Reefat WesternPlatinumLimited, nearMarikana, South Africa JAMESH. CROCKET, YUKOTERUTA,ANDJEREMY GARTH...(Western Platinum Limited), ,some25 miles east of Rustenburg,western Transvaal, South Africa. The host...westernBushyeldComplex,South Africa, on the farm Middelkraal of Lonrho South Africa Limited, locatedapproximately25...locatedapproximately25 mileseastof Rustenburg. In the area of interestthe MerenskySuite, which vide further detail...lengthwise. One ot•the half-corelengthswas tion platinum-group element. 1308 C./tRRIERS OF Pt, Pd, .lIND |  | | Journal (article/letter/editorial) | | Burgersfort in the northeast, to Rustenburg and Northam in the west and an outlier of the Lower and Lower...chromitite layer, in the far western extension north of Zeerust. It is only in these areas that thick...Mineralogical Services, P.O. Box 432, Florida 1710, South Africa E-mail: fjk@moruominerals.co.za overlies but...but also onlaps the floor-rocks to the south of the Steelpoort area . The source of the magmas also appears...appears to have been towards the south as the MG chromitite layers degrade and thin northward whereas the |  | | Journal (article/letter/editorial) | | Caesars “something new” has ever been coming “out of Africa.” Nowadays geologists are there finding novelties...east, the Atlas structures of the north, the igneous rocks of the west, the remarkable copper deposits...deposits of Katanga in the center, and in the south the Ehodesian “Great Dike,” the clear evidences of Carboniferous...widespread platinum-bearina rocks—■ all these and many other newer discoveries in- Africa are { f ^ '...readily accessible to geologists outside of South Africa, and the majesty of the Bushveld Complex, with |  | | Journal (article/letter/editorial) | | minerals Article PGE Production in Southern Africa, Part I: Production and Market Trends Lisa Thormann... Box 524, Auckland Park, 2006 Johannesburg, South Africa; cmbohwa@uj.ac.za Correspondence: benedikt.buchspies@tuhh...November 2017; Published: 18 November 2017 Abstract: Platinum group elements (PGEs) are an important resource...share of global PGE supply is extracted from the South African Bushveld Complex and from the Zimbabwean...industry. Keywords: platinum group elements (PGE); mineral resources; Southern Africa; Bushveld Complex; |  | | Journal (article/letter/editorial) | | Merenskyreef, the Stillwater potholesare confined to the platinum-bearinghorizon (J-M reef). Turner et al. (1985)...which are intensely mineralized with sulfidesand platinum minerals. The authors suggestthat the units missingin...distanceof almost30 km alongstrike throughoutthe platinum mines of the southwestern Bushveld. The most...Brakspruitshaft area of RusBRAKSPRUIT MARKER tenburg Platinum Mines holdings.The data given mottled anorthosite...norites(not shown) Brakspruit marker apart from local streakybanding (e.g., Fig. 4B). The Brakspruitmarker |  | | Report (issue) | | Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements Edited by Louis J. Cabri Ottawa...PETROLEUM Suite 1210, 3400 de Maisonneuve Boulevard West Montréal, Québec, Canada H3Z 3B8 ISBN 1-894475-27-5...as follows in this example: OBERTHÜR, T., 2002. Platinum-group element mineralization of the Great Dyke...Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements. Edited by L.J. Cabri. Canadian... Preface Background The need for a new book on the platinum-group elements (PGE) became apparent about four |  | | Journal (article/letter/editorial) | | seams, tendsto obscure the factthat increases Rustenburg, Wolhuterskop, and Brits. In principle, thisrethecumulate...thatdetailed regional studies 2. Olivine-bearing Union and, to a lesser extent, Amandelbult sections.The...variationtendsto be more distinctin the Lower plex, i.e., at Rustenburg and Wolhuterskop, feldspathie eumuandLowerCritical...andreplenishingtheLowerCriticalzoneismanifested + Fe) ratiosfrom Union sectionto Brits (Table 1). magma. 6. AveragePGE...locatednearRustenburg. Limited maybe highlighted: datafromthe Rustenburg PlatinumMinesTurffonteinsec1. The proportion |  | | Journal (article/letter/editorial) | | ECONOMIC NOVEMBER, GEOLOGISTS 1988 No. 7 The J-M Platinum-Palladium Reef of the StillwaterComplex,Montana:...distinguishedby disseminatedsulfidesin the order olivine,bronzite,plagioclase, augite.The amountsof 0.2 to 0.5 vol...members; C, cumulate; p, plagioclase; o, olivine; b, bronzite; a, augite.Thesmallsolidcircles in theHarzbur...not just the Pt-Pd of 10 to 15 km (from southto north down the axis depositsof the Stillwaterand BushveldComplexes...•• + :• • liquid • • liquid OI Opx • - • Bronzite C•tlon-unit % .• ]• V 01 Opx V • V V Qz |  | | Report (edition) | | bookseller 1936 Price 3s. Net IMPERIAL INSTITU1··E SOUTH KENSINGTON, S.W. 7 Ts E~ Imperial Institute was...• • • • • • • •• • • 12 MINERALS OF THE PLATINUM METALS MonE OF OccuRREN0E • • MINING AND CONCENTRATION...Protecto1·ate .. Southe1n Rhodesia • • • • Union of South Africa • • • • Canada .. •• • • • • Newfoundland... • o I p • • e ' I 97 • • 98 • 4 PLATINUM METALS IN FOREIGN COUNTRIES United States . ... • • PLATINUM AND ALLIED METALS INTRODUCTION The platinum group of metals includes platinum, palladium |  | | Journal (article/letter/editorial) | | African literature is essentially concerned with local areas within each country, only one country is represented...The geology and physiography of parta of Ncheu, South Syasa and Upper Shire districti: Nyaaaland Geol...Precambrien de I’Afrique Occidentale Franwise: Fr. West Afr. Dir. Mines, Bull. U, 107 pp. Ft. Weat Afr.:...Notice explicative sur la feuille Abidjan-Oueet: Fr. West Afr. Serv. GBol., Carte GBol., 25 pp. Fs. Wed Afr...Afr.: 1 quart&e. Bosazw, V. L. (19378) Notes on South African materiels for silica refractories: Geol |  | | Book | | revised edition) 2 2 . N. DEKUN MINERAL ECONOMICS OF AFRICA 2 3 . B.L GULSON LEAD ISOTOPES IN MINERAL EXPLORATION...Ores DEVELOPMENTS IN ECONOMIC GEOLOGY, 2 6 platinum-group element exploration Dennis L. Buchanan Department...will never be spoken. " P. A. WAGNER, The platinum South Africa deposits so be alluring prophesied and... Foirewoird. The platinum-group elements rhodium, ruthenium, (PGE) include platinum, iridium and osmium...as well a s major industrial uses. a permanent Platinum has aesthetic qualities, combined lustre, which |
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