 | | 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) | | ROGER N. SCOON† P.O. Box 2461, Rivonia 2128, South Africa AND ANDREW A. MITCHELL School of Geology,...KwaZulu-Natal, Private Bag 54001, Durban 4000, South Africa Abstract Discordant ultramafic bodies are a...significant feature of the Bushveld Complex, South Africa. Many of these bodies form subvertical, cylindrical...probably more abundant in the Bushveld Complex, South Africa (Fig. 1) than is generally realized. The original...2). Our investigations into the platiniferous Driekop, Mooihoek, and Onverwacht pipes, which are also |  | Günther, T., Haase, K.M., Junge, M., Oberthür, T., Woelki, D., Krumm, S. (2018) Oxygen isotope and trace element compositions of platiniferous dunite pipes of the Bushveld Complex, South Africa – Signals from a recycled mantle component?. Lithos, 310. 332-341 doi:10.1016/j.lithos.2018.04.017 | Journal (article/letter/editorial) | | platiniferous dunite pipes of the bushveld complex, South Africa – Signals from a recycled mantle component?...platiniferous dunite pipes of the bushveld complex, South Africa – Signals from a recycled mantle component?...platiniferous dunite pipes of the Bushveld Complex, South Africa – Signals from a recycled mantle component?...Olivine compositions in these pipes range from forsterite (Fo) 80 to 35 mol.% and suggest crystallization...isotope data of olivine and pyroxene from the Driekop, Mooihoek and Onverwacht pipes show that the parental |  | | 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...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...-- 37.6 15.4 2.1 -- 4.0 Outo- kumpu, Vauze mine, Finland** Quebec*** 21.1 15.6 30.9 -- 0.1 1.3 |  | | Journal (article/letter/editorial) | | DISCUSSION Discussion of “The Bushveld Complex, South Africa: formation of platinum–palladium, chromeand...of Geology, Rhodes University, Grahamstown, South Africa e-mail: rnscoon@iafrica.com A. A. Mitchell School...KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa De Klerk, Canad Mineral 25:51–77, 1987) and...with the overlying leuconorite–anorthosite on the Driekop property, presented by Maier et al. as Fig. 5e...from the Upper Critical Zone at the Amandelbult mine (32 samples), 2 magnesian dunite, Winnaarshoek pipe |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, PO Wits, 2050, South Africa e-mail: 065rgc@cosmos.wits.ac.za C. Harris Department... University of Cape Town, Rondebosch, 7700, South Africa F. J. Kruger Hugh Allsopp Laboratory of the...University of the Witwatersrand, PO Wits, 2050, South Africa Editorial responsibility: A. Hofmann pared...considered to have formed by replacement as a result of local migration of residual magma from the underlying...platiniferous olivine-rich pipes of Onverwacht, Driekop and Mooihoek (Fig. 1b) have been mined down to |  | | Journal (article/letter/editorial) | | place by Mg2SiO4 + 2FeC12•i • Fe2SiO4 + 2MgCI• . forsterite fayalite Aqueouschloridecomplexesare alsobelievedto...its remarkable igneouslayering and enigmatic The Driekop orebodyis 18 to 25 m acrossand has ultramaficpegmatoidbodies...Itsaxisplunges transgressive dunite bodiesknown as the Driekop, 77 ø to the nothwest,which is nearly perpendicular...mined for platinum, the Driekop the basisof informationfrom otherpipes,the Driekop pipe is the focusof this...shapeand orientationasits orebody(Wagner,1929; The Driekop pipe crosscuts part of the upper crit- Heckroodt |  | Maier, W. D., Barnes, S.-J., Groves, D. I. (2013) The Bushveld Complex, South Africa: formation of platinum–palladium, 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 platinum– 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 Sheba’s Ridge deposit, 11 Rooipoort, Moorddrift, and...were delayed until the Geological Survey of South Africa collared a series of boreholes (NG1– NG3) at |  | | Journal (article/letter/editorial) | | FOR THE DRIEKOP PLATINIFEROUS DUNITE PIPE, EASTERN LIMB OF THE BUSHVELD COMPLEX, SOUTH AFRICA R.N. SCOON...Durban 4000, South Africa e-mail: mitchaa@mweb.co.za © 2009 June Geological Society of South Africa ABSTRACT...such pipe, at Driekop, are revisited on the basis of detailed mapping and sampling of mine workings that...core-zone. All of the iron-rich ultramafics at Driekop are distinguished by the absence of a spinel phase...(Fo85.1) suggest that the magnesian dunite in the Driekop pipe is orthomagmatic. This hypothesis is supported |  | | Journal (article/letter/editorial) | | REPLACED MERENSKY REEF AT THE AMANDELBULT MINE, SOUTH AFRICA R.N. SCOON Department of Geology, Rhodes...Rhodes University, Grahamstown 6140, South Africa e-mail: rnscoon@iafrica.com A.A. MITCHELL School of Geological...4000, South Africa e-mail: mitchaa@mweb.co.za © 2011 March Geological Society of South Africa ABSTRACT...in the eastern limb of the Bushveld Complex, South Africa, differ sufficiently from one another to warrant...hypothesis. In our previous contributions on the Driekop, Onverwacht, and Twyfelaar localities we noted |  | | Journal (article/letter/editorial) | | overly simplistic, and the well-known occurrencesof Driekop, Structural Features The pipes are markedly...tensof kilometers). The layering adjacentto the Driekop pipe forms a major thepipesandthe MerenskyReef...Onverwachtpipes[Wagner,1929]. 1982], as has the Driekop pipe [Schiffries,1982]. The con- These structu...Tait and Jaupart's restrictedto this area, and local structuralcontrolsmay be suggestion that a single...fundamental processeswithin the magma chamber. whereasat Driekop (the least iron-rich)it formsa numberof Moreover |  | | Journal (article/letter/editorial) | | 7 Wagner, P. A., Platinum Deposits and Mines of South /,J:rica:Lontlon, pp. 55-59, 1929. EWagner, P. A...approaching hyalosiderite, from Upper Quarry, Driekop Mine. Anal. A. MacJohnson (Wagner, 1929, p. 84)....coarse-grained hortonolite-dunite 200 ft. level, onverwacht Mine. Anal. R. A. cooper (Wagner, 1929, p. 60) (incomplete...Hortonolite-dunite from outcrop, Onverwacht Mine, Lydenberg District, Transvaal. Anal. II. G. Weall (Wagner...by general consent' is applied to mixtures of forsterite and fayalite having the constitution zMgzSiOE*FezSiO+where |  | | Journal (article/letter/editorial) | | Introduction by, amongothers,HansMerensky,locatedthe Driekop, Mooihoek, and Onverwachtdunitc pipes, the THE...chromitite layers into the northwest of Steelpoort in South Lebowa, cluding the UG-2 chromitite layer (Wagner...assemblagein the UG-2 chromitite layer closeto the Driekop pipe. Wagner (1929) reported valuesof up to 19...Duringstage1 the protorocks around these pipes in the Driekop-Maan- UG-2 chromititelayer is formedunder highlyreMcLarenandDe...MerenskyReef at the Western Platinum mine, near Marikana, South Africa: ECON. GEOL., v. 71, p. 1299-1307 |  | | Journal (article/letter/editorial) | | EUGENE N. CAMERON OF SOUTH AND No. 2 PEGMATITES THE BUSHVELD AFRICA GEORGE A. DESBOROUGH ABSTRACT...pegrnatitesin the easternpart of the BushveldComplexof South Africa have been known for many years. The pegmatitesare...platinum-bearing pipes of Onverwacht,Mooihoek,and Driekop,minedchieflyin the 1920's. These andotherbodiesweredescribed...by differentiation. Heckroodt(5) restudiedthe Driekop platinumpipe and inferredthat the dunite pipe was...Biljon (7) describedthe geologyof an area east and south of Steelpoort,extendingacrossGrootboomonto Annex |  | | Report (issue) | | proportions of individual PGE within a deposit or a district. processes are also known but these are of relative...to Iiquids not able to be mixed together. 5 www. Mine ra Is UK. corn w Platinum . Iii -~ ~ . , ...• • Munn ~ Munn\ A i.11Ti A ~ Kam bald a District r t S'al Rad o. .. D~~e) ~--· eld Complex...worked out Merensky Reef, Bushveld Complex, South Africa; Great Dyke, Zimbabwe; J-M Reef, Stillwater...Munni Munni Complex, Western Australia. UG2, South Africa; Lower Chromitites, Stillwater Complex, USA |  | | Book (edition) | | Mineral Descriptions Molybdenite in Graphite; Bogala Mine, Sri Lanka 51 Copper, native Synonym(s): Cuivre...grey); North Mine (North Broken Hill Mine; NBH Mine), Broken Hill, Yancowinna Co., New South Wales, Australia;...vein in jasper (red internal reflections); Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey...argentite reaction rim (greenish grey; arg); Monte Narba Mine, San Vito, Cagliari Province, Sardinia, Italy; PPL...matrix (dark grey); Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Sachsen, Germany |  | | Book (edition) | | of the compounds to the other; for example, ..Forsterite. Mg 2SiO,. orth., fom1s a series with Fayalite... Meta/lurgical and Mineralogical Society o/ South Africa Journal of Chemical Phy ics Journal cif the...and Proceedings of the Royal Socief) 1 of Ne,v South Wales JPSJ Journal of rhe Physical Society of...Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Abernathyitc, K[(UO 2 )(AsO,)](HP) 3, tet., Fumerole No. 2 mine, Temple Mountain. on the southeast flank of the |  | | Book | | Using examples from the Bushveld complex of South Africa and other intrusions, this book provides a comprehensive...314–321, 3rd Floor, Plot 3, Splendor Forum, Jasola District Centre, New Delhi – 110025, India 79 Anson Road...denote a silicate liquid produced specifically by the local melting of pre-existing crystals. The terms volatile...sill-like intrusions such as the Bushveld Complex in South Africa that is up to 9 km thick and extends over 50...grains owing to variations in grain size or the local environment a crystal finds itself. Classical interpretations |  | | Journal (article/letter/editorial) | | Russian). The mineral occurs in metasomatic calcite forsterite-magnetite rocks of an alkalic ultrabasic massif...TLxrucur, ANDJuN Iro. The minerals of the Noda-Tamagawa Mine, Iwate Prefecture, Japan. III. Yoshimuraite, a new...similar mineral has also been found at the Taguchi Mine, Aichi Prefecture, and will be described 1ater....University, who first studied the Mn minerals of the mine. MF. Ekanite B. W. ArlrnsoN, G. F. Cr.,lnrNcnulr-...occurs in the gem pits of Eheliyagoda, Raknapura district, Ceylon. A n a l y s i sb y D . I . B o t h w |  | | Journal (article/letter/editorial) | | world'slargestknownchro- farms Twyfelaar 119 KT, Driekop 253 KT, and mite deposits. Various investigationsof...of the mineralogicaland chemical KT; by studiesin mine workingson Jadglust418 evolutionof the Critical...basedon de- Zone is given by outcrops,drill holes,and mine 845 846 2 g*45 ' E. N. CAMERON 3 0'00' 30'15'...1 to --+0.2 mole percent for the enstatiteand forsterite outcrops,polishedslabs,or thin sections,to indicate...another in the floor of the adit at the Winterveld mine, but the lower- most part of the sectionis basedon |  | Glotov, A. I., Polyakov, G. V., Hoa, T. T., Balykin, P. A., Akimtsev, V. A., Krivenko, A. P., Tolstykh, N. D., Phuong, N. T., Thanh, H. H., Hung, T. Q., Petrova, T. E. (2001) THE BAN PHUC Ni Cu PGE DEPOSIT RELATED TO THE PHANEROZOIC KOMATIITE BASALT ASSOCIATION IN THE SONG DA RIFT, NORTWESTERN VIETNAM. The Canadian Mineralogist, 39 (2) 573-589 doi:10.2113/gscanmin.39.2.573 | Journal (article/letter/editorial) | | 2.7 wt.% Sb was earlier found at the Driekop mine, South Africa (Tarkian & Stumpfl 1975). The contents...(1965): Melting relations in the join diopside – forsterite – pyrope at 40 kilobars and at one atmosphere...F. (1975): Platinum mineralogy of the Driekop mine, South Africa. Mineral. Deposita 10, 7185. TRAN VAN |  | | Book | | revised edition) 2 2 . N. DEKUN MINERAL ECONOMICS OF AFRICA 2 3 . B.L GULSON LEAD ISOTOPES IN MINERAL EXPLORATION...never be spoken. " P. A. WAGNER, The platinum South Africa deposits so be alluring prophesied and mines...converters to be fitted to new cars. At present, South Africa and the USSR are the sources of most of the...world's newly mined PGE, with virtually all the South African production derived from the Bushveld Complex...magmatic sulphides as potent collectors of PGE. The South African producers are relatively well placed t o |  | | Journal (issue) | | version of olivine, exists as a solid solution of forsterite Mg 2Si04 and fayalite Fe2Si0 4. Peridot (Fe,Mg)Si0...care before Ste Marie, spending hours with the local Customs to get the papers right. On arrival in Calais...spent at two tin mines, firstly, for a short time, South Crafty as a humble labourer (shovelling crushed...arrange vacation work and this turned out to be in South Africa. This and the holiday afterwards in Zimbabwe-Rhodesia...time) and RSA was enough to clinch my love for Africa. After graduating, in the summer of 1979, a friend |  | | Journal (article/letter/editorial) | | gersdorffite ore [(Co,Ni,Fe)AsS] from the Los cobalt mine in Sweden. He reported in 1751 that the residue...area that was later to be the site of the Creighton mine (Murray 1857), no systematic exploration was undertaken...sulfides were uncovered in the vicinity of the Murray mine in 1883, during construction of the Canadian Pacific...until a shipment of ore sent from the Creighton mine to the Orford Copper Co. in New Jersey proved difficult...FIG. 1. Production of Ni metal from the Sudbury district, together with the companies responsible for the |  | | Journal (article/letter/editorial) | | more thoroughly described Bushveld Complex, South Africa. They also suggest a number of potentially fruitful...Lana Lapinsky. J.C.I. Pothole, near Rustenburg, South Africa. Our sample R-1-SE a great deal of niccolite...pipes by an interaction of FeC12 solution with forsterite, and the association of the platinum mineralization...Geol. Res. Bushveld Complex, Univ. of Pretoria, S. Africa. Cabn', L. jr., 1981: Platinum-group elements:...Geol. Res. Bushveld Complex, Univ. Pretoria, S. Africa. Irvine, T. N., Keith, D. W., Todd, S. G., 1983: |
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