 | | Journal (article/letter/editorial) | | Mineralogyof Platinum-Group Mineralsin the Witwatersrand,SouthAfrica CLIVE E. FEATHE• Abstract Approximately80...platinum-groupmineral grains in the Precambrian Witwatersrand conglomerate reefs are (Ir, Os, Ru) alloys....present. Sperrylite commonlyoccursas an outer coating on all the abovegrain types. Sperrylite and isoferroplatinummake...alloy grains, which in turn may be coatedwith sperrylite. Euhedral and subhedralinclusionsin the comm...even during later metamorphismof the reefs when sperrylite,hollingworthite, and related phasesprobably formed |  | | Report (chapter) | | electron microprobe as: Irarsite (IrFeRhPtCuCo)AsS Sperrylite (PtFelrRh)(AsSb)2 Palladian melonite (NiPdFe)(TeBi)2...pyrrhotite. At that time, the rare occurrence of sperrylite (up to 9 ~tm) inclusions in magnetite, pyrrhotite...by the company mineralogist has revealed that sperrylite is a common PGM in the ore and has also identified...Bushveld Igneous Complex in the Transvaal of South Africa. Since its discovery in 1924, this deposit has...assumed to consist mostly of native platinum and sperrylite PtAs. The first ore microscopy study was by Schneiderhohn |  | | Journal (issue) | | Twenty-three, Number Three ® Articles Gold in South Africa ..............................................Record, ,·olume 23 , Ma.,·-June. 1992 GOLD IN SOUTH AFRICA Bruce Cairncross Department of Geology Rand...Afrikaans University P.O. Box 524 Johannesburg 2000 South Africa Carl R. Anhaeusser Economic Geology Research...the Witwatersrand P.O. Wits 2050 Johannesburg South Africa Gold has been mined in South Africa for over...has been won from conglomerate reefs of the Witwatersrand goldfields, where production from individual | | | Journal (issue) | | Mowry Place Tucson, AZ 85741 Articles Gold in South Africa ..............................................Afrikaans University P.O. Box 524 Johannesburg 2000 South Africa Carl R. Anhaeusser Economic Geology Research...O. Wits 2050 Johannesburg South Africa Gold has been mined in South Africa fo r over a century. Most...has been won from conglomerate reefs o f the Witwatersrand goldfields, where production from individual...INTRODUCTION Gold was mined in pre-European times in South Africa by the indigenous tribes. Most of the gold was |  | | Report (edition) | | bookseller 1936 Price 3s. Net IMPERIAL INSTITU1··E SOUTH KENSINGTON, S.W. 7 Ts E~ Imperial Institute was...Protecto1·ate .. Southe1n Rhodesia • • • • Union of South Africa • • • • Canada .. •• • • • • Newfoundland •...Empire, especially in Canada and the Union of South Africa. During 1913, Russia was responsible for over...the list of producers of the platinum metals. South Africa has large reserves of platinum ore, and is the...quantities. It may occur native, or as an arsenide (sperrylite ), or as a sulphide (cooperi te; braggite). Of |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...reason of the great diversity and magnitude of South African mineral deposits and local mining operations...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Book | | and uranium is an important by-product of many South African gold ores. The properties of a mineral govern...occur along a 2400 km belt from Queensland to New South Wales. Most have quartz fillings and some are mineralized...copper-bearing breccia pipes of Messina in South Africa (Jacobsen & McCarthy 1976). Fig. 2.6. Plan...mining areas of the beach sand deposits of Crowdy South Wales, Australia. (After Winward 1975.) 15 concordant...is won from Precambrian deposits of this type in South Ne Fig. 2.14. \ Distribution of pay-streaks |  | | Book | | LE CONGLOMERATE AND QUARTZITE TYPE 335 The Witwatersrand / 336 14-1 GREGORY,J. W: The Origin of Gold...14-4 MELLOR, E. T.: The Conglomerates of the Witwatersrand / 373 Inst. Mining and Metallurgy Trans. 25:261-291...Origin of Gold and Radioactive Minerals in the Witwatersrand System, the Dominion Reef, the Ventersdorp Contact...Contact Reef and the Black Reef / 404 Geol. Soc. South Africa Trans. 58:218-222 (1955) 14-6 PRETORIUS, D.... A.: The Depositional Environment of the Witwatersrand Goldfields: A Chronological Review of the Speculations |  | | Book | | Platinum; qualities Africa. British and distribution. Ural Mountains. South Columbia. Genesis of Platinum...Pneumatolytic Rossland, South Australia, and Braden Mine, Chile. Lodes of Cornwall. Pipe Lodes South Australia and...and South Africa. Disseminations. Pyritic Masses Spain and Mt. Lyell. Secondary Ores Secondary Enrichments...< Almaden Mines: Price. 1 Mi". New the South Africa. Idria, Califor: of Ores with Kainoxoic Formation...Pneumatolytic *57 Origin. Gems— Diamond, South Africa Asbestos. Monazite. The Brazil; theories of |  | | Book | | Eastern Goldfields, Western. Australia Barberton, South Africa Eastern Goldfields, Western Australia Manitoba... Large layered complexes Bushveld Complex, South Africa Stillwater Complex, USA Great Dyke, Zimbabwe...Skaergaard, Greenland 4. Kimberlites Kimberly, South Africa B, Intrusions in cratonic areas Diamond C...Bushveld, South Africa Great Dyke, Zimbabwe Sudbury, canada Bushveld, South Africa Bushveld, South Africa...Australia Pechanga, Russia Diamond Kimberly, South Africa Yakutia, Russia Kimber lites Carbonatite complexes |  | | Book (edition) | | critical in the USA, but in the Republic of South Africa (RSA), a major source of all three, they are...and uranium is an important by-product of many South African gold ores. Among industrial minerals the...develop the 450+ Mt eu-U-Au Roxby Downs Project in South Australia, Western Mining Corporation and British...Australia, along a 2400 km belt from Queensland to New South Wales, there are hundreds ofpipes in and close to...the copper-bearing breccia pipes of Messina in South Africa (Jacobsen & McCarthy 1976). Mantos and pipes |  | | Book (volume) | | Papers and Discussions Volume I , I JOHANNESBURG SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY 1961... 01", ~TALLUf>iYY. © Copyright 1961 by The South African Institute of Mining and Metallurgy Ext'racts...I (1v DEC 196f Printed in t!te Republic of South Africa by Hortors Limited, Johannesburg V r. 1 The...and n1anagement of the gold mining industry in South Africa -C. B. ANDERSON . . . . . . . . . page r J ... ( 2. The economy of the Union of South Africa-W. J. BusSCI-IAU 9 3. An introduction to the physical |  | | Book (edition) | | mining companies took him to the Far East, South and East Africa, North America, and most of the countries...fields, chiefly from the Congo Republic, Ghana, South Africa, and Sierra Leone. For the five-year period...000; 1,600,000; South Africa, 2,900,000; Sierra Angola, 1,300,000; South West Africa, 920,000; Tanganyika...metric carats. (b) by value: South West Africa, £16,500,000 sterling ; South Africa, £16,100,000; Congo Republic... 45 Congo Republic South Africa Sierra Leone Angola YJ), south West Africa WY, Tanganyika Y, Ivory |  | | Book | | Corporation of South Africa, the Chair of Economic Geology at Rhodes University, South Africa, and since...appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of Geosciences...which has included work in Europe, southern Africa, South East Asia, New Zealand, the southwest Pacific...Felsic Phase of the Bushveld Igneous Complex, South Africa . . . . . . . . . . . 4.3.6 The Sn-W Deposits.... . . . . . . . 4.4.4 Sabie-Pilgrim’s Rest, South Africa . . . . . . . . . . . . . . . . . 4.4.5 Capricorn |  | | Book (edition) | | Meredith (eds) Geology and minerals resources of West Africa J.B. Wright The inaccessible Earth G. C. Brown...example, the common black flint from the Chalk of the South of England). This condition is very common among...on to the equatorial plane by joining it to the 'south pole' (bottom point) of the enclosing sphere , or...between the vertical line joining the north and south ' poles' of the sphere and the pole to a particular...resolves light into components vibrating in a north-south direction. The two componen_ts interfere on leaving |
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