 | | 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 |  | 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...placer, Maandagshoek, eastern Bushveld Complex, South Africa. SOMMAIRE Lors de nos campagnes de terrain...Merensky Reef, on the farm Maandagshoek, close to Burgersfort in the Eastern Bushveld (Figs. 1, 2). Some of...between 2 and 3 km wide and runs approximately northâsouth, subparallel to the layering of the Mafic Phase...underlain by the Critical Zone. Between the Atok mine and Steelpoort (Fig. 2), the layered sequence dips |  | | 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...sperrylite (PtAs2) and geversite (PtSb2), 15% hollingworthite (RhAsS) and irarsite (IrAsS) and 50/o of other...question is irarsite, frequently associated with hollingworthite. PdsCuSba is not a separate mineral species...stibiopalladinite, PtSb is actually (Pt, Pd)aSb2. The Driekop platinum group minerals association is dominated |  | | 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...PGE sulpharsenides. Key words: Bushveld Complex, Driekop, dunite pipe, platinum-group minerals. Introduction |  | | 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...relatively large grains of sperrylite and hollingworthite with minor laurite associated with the altered...ultramafic pipes, Bushveld Complex, Republic of South Africa. SOMMAIRE Les pipes ultramafiques de Onverwacht |  | | Journal (article/letter/editorial) | | 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)...silicates are common." Driekop*** 6.4 2 50 50.3 2 30 -- Hollingworthite RhAsS Irarsite IrAsS ...Anotherremarkablefeatureis the presence of the sulfarsenides hollingworthite and irarsite. The latter has also beenrecordedfrom |  | | 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...PGE sulfarsenides, hollingworthite, was discovered as a new mineral in the Driekop Mine, Transvaal by Stumpfl...Transvaal. In the past twenty years members of the hollingworthite-irarsite group have been reported from 180 |  | | Report (issue) | | (3) 44.48 98.4 100.00 55.52 (1) Driekop mine, South Africa; by electron microprobe, corresponds...corresponds to Pt1.00 Sb1.84 . (2) Onverwacht mine, South Africa; by electron microprobe, corresponds to Pt1.00...ultramafic rocks (Driekop mine, South Africa). Association: Platinum, gold, hollingworthite, sperrylite, stibiopalladinite...stibiopalladinite, chalcopyrite, pyrrhotite (Driekop mine, South Africa); vozhminite, heazlewoodite, tucÌekite...Distribution: In South Africa, in the Merensky Reef, Bushveld complex, Transvaal, in the Driekop [TL] and Onverwacht |  | | Journal (article/letter/editorial) | | University, Ottawa KIS 5B6, Canada Ansrru,cr Hollingworthite from a deposit rich in copper sulfides in olivine...trends: Ir- and As-rich hollingworthite is progressivelyzoned to pure hollingworthite (RhAsS) followed by...zoning cannot result from simple exsolution of hollingworthite from interstitial magmatic sulfide; it is interpreted...Pt-group elementsat different times. INrnooucrroN Hollingworthite (RhAsS),definedby Stumpfl and Clark (1965)...concentratesfrom the Driekop mine, South Africa. Other data on hollingworthite are derived from specimensfrom |  | | Report (issue) | | Crystal Data: Cubic. Point Group: 2/m 3. hollingworthite or laurite. As grains, to 1 mm, and intergrown...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...series with hollingworthite. Cobaltite group. Occurrence: In chromite in hortonolite dunite (South Africa);...Pt-group alloys. Association: Platinum, ruthenian hollingworthite, sperrylite, laurite, iridarsenite, ruthenarsenite |  | | Report (issue) | | Hollingworthite (Rh, Pt, Pd)AsS c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic...797 Z=4 X-ray Powder Pattern: Onverwacht mine, South Africa (ruthenian). 3.31 (10), 2.87 (10), 1.74 (1)...02 14.99 Total 99.4 100.0 100.19 (1) Driekop mine, South Africa; by electron microprobe, corresponding...geversite, erlichmanite, irarsite, PtâFe alloys (South Africa); chalcopyrite, cobaltite, gersdorffite, pyrrhotite...mineral. In South Africa, in the Merensky Reef, Bushveld complex, Transvaal, from the Driekop [TL], Onverwacht |  | | 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) | | 178-184 (1987) © Springer-Verlag 1987 Irarsite-hollingworthite solid-solution series and other associated...irarsite-hollingworthite solid-solution series occur in the Shetland ophiolite complex. Hollingworthite frequently...both Ir and Rh end members of the irarsite-hollingworthite group. The presence of platinum-group elements...values (c) in air X Y Y% Pe% 2d Irarsite and Hollingworthite 0.2984 0.3057 42.6 5.4 478.9 0.3006 0.3078...to the irarsite-hollingworthite seriesâą Irarsite is commonly rimmed by hollingworthite and the converse |  | | 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...many rarer PGM including stibiopalladinite, hollingworthite, laurite, PGE arsenides and PGE sulfides. The...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) | | JULY_AUGUST, MINERALOGICAL 1965 NOTES HOLLINGWORTHITE,A NEW RHODIUM MINERAL, IDENTIFIED BY ELECT...beendescribedfrom depositsin the Soviet Union, South Africa and Canada. These discoveries have been of more... Platinum concentratesfrom the Driekop mine, Transvaal, South Africa, have already yielded nine new platinum...mineral describedin this note do exist. The name Hollingworthite is proposedfor the new mineral, in honour of...Commissionon New Minerals and Mineral Names. Hollingworthite is closely associatedwith a Rh-rich sperrylite |  | 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) | | contains inclusions of laurite, irarsite, hollingworthite, and cuproiridsite. Fine-grained PGM grains...is close to the platiniferous dunite pipes of Driekop, Mooihoek and Onverwacht. In this study, the chemical...contributions of PGM from the Mooihoek, Onverwacht and Driekop pipes, with abundant PtâFe alloys. For example...UGâ2 are much smaller, commonly <10â30 mm. In the Driekop pipe, PtâFe alloy grains make up 50 vol.% of the...the PGM, sperrylite and geversite 30 vol.%, hollingworthiteâirarsite 15 vol.%, and the remaining 5 vol |  | | 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) | | Rh form sulfarsenides (irarsite IrAsS and hollingworthite RhAsS, 22 respectively). The chemical preference...Merensky Reef of the Bushveld 31 Complex, South Africa, PGE alloys form up to 80 % of the total of...Bushveld Complex (Merensky Reef, Platreef 113 and Driekop pipe) and the Great Dyke. Platinum-PGE substitution...with hollingworthite (Fig. 1a). The solid solution 119 between sperrylite and hollingworthite is considered...1a). The Ru+Os content 124 is higher in hollingworthite. Sulfur correlates positively with Rh and Ru |  | | Journal (article/letter/editorial) | | DECEMBER 1996, VOL. 60, PP 973-978 Osmian hollingworthite and rhodian cobaltitegersdorffite from the...Prichard. 1987: Ohnenstetter et al., 1991). Hollingworthite is a cubic mineral with a cobaltitetype structure...extensive solid solutions between hollingworthite and irarsite, and hollingworthite and platarsite. Os-rich irarsite...describes a new occurrence and chemistry of osmian hollingworthite and associated very rare rhodian cobaltite...crystals of the osmian hollingworthite from Lukkulaisvaara; (a) Euhedral hollingworthite (HOL) occurring at |  | Viljoen, Fanus, Ramakoloi, Ntshebo, Rose, Derek, Reinke, Christian (2015) Mineral Chemistry of (Pt,Pd)-Bismuthotelluride Minerals In the Platreef At Zwartfontein, Akanani Project, Northern Bushveld Complex, South Africa. The Canadian Mineralogist, 53 (6) 1109-1127 doi:10.3749/canmin.1500047 | Journal (article/letter/editorial) | | AKANANI PROJECT, NORTHERN BUSHVELD COMPLEX, SOUTH AFRICA FANUS VILJOEN§, NTSHEBO RAMAKOLOI, AND DEREK...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa CHRISTIAN REINKE Spectrum Analytical Facility...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa ABSTRACT The (Pt,Pd)-bismuthotelluride minerals...with Pt-bismuthotelluride minerals, altaite, hollingworthite, plumbopalladinite, PdSbSn alloy, and sperrylite...BACKGROUND The Paleoproterozoic Bushveld Complex in South Africa is the worldâs largest repository of platinum-group |  | | Report (issue) | | 161(2) Z=8 X-ray Powder Pattern: Onverwacht mine, South Africa. 2.265 (100), 3.020 (90), 1.934 (60), 1.910...38.96 Total 100.64 99.47 (1) Onverwacht mine, South Africa; by electron microprobe, corresponds to (Pt2...chromite (Onverwacht mine, South Africa); osmium, PtâPdâCu alloy, hollingworthite, irarsite, laurite,...(Shetland Islands, Scotland). Distribution: In South Africa, in the Merensky Reef, Bushveld complex, Transvaal...Transvaal, at the Onverwacht [TL] and Driekop mines. From the Joubdo stream, Birbir River, Ethiopia. On |  | | Journal (article/letter/editorial) | | University] at 17:41 09 June 2016 TaEnaleh, Norilâsk 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...Great Eastern mine, Clark County, Nevada. It is an ore mineral in the active Pt-Pd mine and related occurrences...collected at the Vermilion mine in what is now the famous Sudbury district, Ontario, Canada. He named |  | | Journal (article/letter/editorial) | | The unique geologicalpositionof the pipes has Driekop,playeda significantrole ashigh-gradeplat- been...three pipeswason the order of 15,000 ozs. Driekop was the last mine to ceaseoperationsin 1961. The disappearanceof...prehensive surveyof the platinummineralogyof the Driekop pipe was presentedby Tarkian and 0561-0125/$2/74/1419-1252...mineralogical difference between platinum-rich, 2. DRIEKOP 0 ::::... Ă- o 20 40 ,. " 3. MOOIHOEK âą__âą...Mooihoek,and Driekop and even better, fits the conceptof metasomaticoroccur on a north-south-strikinglineament |  | | 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 |  | Yudovskaya, M., Kinnaird, J., Naldrett, A. J., Mokhov, A. V., McDonald, I., Reinke, C. (2011) FACIES VARIATION IN PGE MINERALIZATION IN THE CENTRAL PLATREEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA. The Canadian Mineralogist, 49 (6) 1349-1384 doi:10.3749/canmin.49.6.1349 | Journal (article/letter/editorial) | | THE CENTRAL PLATREEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA Marina YUDOVSKAYA§ School of Geosciences, University...the Witwatersrand, Private Bag 3, Wits 2050, South Africa, and IGEM RAS, Staromonetny 35, Moscow 119017...the Witwatersrand, Private Bag 3, Wits 2050, South Africa Andrey V. MOKHOV IGEM RAS, Staromonetny 35...Johannesburg, PO Box 524, Auckland Park 2006, South Africa Abstract The lateral variation in platinum-group...With decreasing temperature, sperrylite and hollingworthite continued crystallizing across a wide range |
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