 | | Journal (article/letter/editorial) | | Institute for Metallurgy (NIM) Bon Accord Mpumalanga Province South Africa BRUCE CAIRNCROSS N Department of...PO Box 524, Auckland Park 2006 Johannesburg South Africa brucec@uj.ac.za IMITE, (Ni,Mg,Al)6(Si,Al)4O10(OH)8...nickel deposit in the Barberton greenstone belt, Mpumalanga Province, South Africa. Figure 1. Entrance...of Johannesburg city center, in the Randburg municipality. Bruce Cairncross photo (February 2017). Volume...for Metallurgy (NIM) based in Johannesburg, South Africa, subsequently renamed in 1981 as MINTEK, the |  | | 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) | | Stolzburg Layered Ultramafic Complex, Barberton Greenstone Belt, South Africa Carl R. Anhaeusser Economic Geology...Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa E-mail: 065cra@cosmos.wits.ac.za ABSTRACT The...The southwestern portion of the Barberton greenstone belt is noteable for its varied and complex geology...3500 Ma lithologies in the lower division of the Barberton Supergroup (viz., the Tjakastad Subgroup of the...type locality). Recent studies elsewhere in the Barberton region (including stratigraphic and geochronological |  | | Journal (article/letter/editorial) | | evolution of the northwest part of the Barberton Greenstone Belt, South Africa: A review C.R. Anhaeusser Economic...2050, South Africa e-mail: carl.anhaeusser@wits.ac.za © 2019 December Geological Society of South Africa...Abstract Formations on the northwestern flank of the Barberton Greenstone Belt have hosted over 85% of all the...the gold recovered from the ca. 3550 to 3000 Ma Barberton Supergroup since early discoveries in 1872. This...Pluton invaded the area north of present day Barberton town causing the separation of the greenstones |  | | Journal (article/letter/editorial) | | TheNatureof Chrysotile Asbestos Occurrences in Southern Africa: A Review C. R. ANa^•USSER Abstract The principal...principal chrysotileasbestosoccurrencesin Rhodesia,South Africa, and Swaziland are described,emphasisbeing placedon...generallyacknowledgedas being largely responsible for the local developmentof asbestosfiber, examplesfrom the southernAfrican...complexes,most of which are associatedwith the Africa ranks third in the world after Canada and anci...peridotite and pyroxenite intrusive into, and folded Africa, it appearsthat the depositslocated in the along |  | | Journal (article/letter/editorial) | | mineraliza‐ tion at Sheba Mine, Barberton Greenstone Belt, South Africa Lucas Pintos Cerda, Caitlin Jones...mineralization at Sheba Mine, Barberton Greenstone Belt, South Africa, Ore Geology Reviews (2020), doi:...mineralization at Sheba Mine, 4 Barberton Greenstone Belt, South 5 Africa. 6 Lucas Pintos Cerda1*, Caitlin...Stellenbosch, Matieland 7602, Stellenbosch, South Africa. 10 11 *Corresponding author: E-mail address:...from Sheba gold mine in the 17 Barberton Greenstone Belt of South Africa indicate that gold mineralization |  | DZIGGEL, A., KNIPFER, S., KISTERS, A.F.M., MEYER, F.M. (2006) P-T and structural evolution during exhumation of high-T, medium-P basement rocks in the Barberton Mountain Land, South Africa. Journal of Metamorphic Geology, 24 (7) 535-551 doi:10.1111/j.1525-1314.2006.00653.x | Journal (article/letter/editorial) | | medium-P basement rocks in the Barberton Mountain Land, South Africa A . D Z I G G E L ,1 S . K N I P...Stellenbosch, Private Bag X1, Matieland 7602, South Africa ABSTRACT The P–T evolution of amphibolite...margin of the Paleo to MesoArchean Barberton greenstone belt, South Africa, has been reconstructed via detailed...decompressed basement rocks. Key words: Archean; Barberton greenstone belt; decompression; exhumation; K(Mn)FMASH...INTRODUCTION The c. 3550–3100 Ma Barberton greenstone belt in South Africa is generally considered to be |  | | Corporate Document | | Kochbulak-Kairagach ore field 9.5.1 Kochbulak deposit 10. SOUTH AFRICA 10.1 Western Deeps 10.2 Fairwiew 10.3 Renco...16 Corinthia 13.17 Edward's Find 13.18 Polaris South 14. Intermediate and felsic igneous host rocks 14...is >1 km long, 15-30 m wide, parallel with the local lithological units, and dips at 60° to the ENE (Pietikäinen...and the Jormua and Outokumpu ophiolites further south (Kontinen 1987, Sorjonen-Ward et al. 1997, Lehtonen...hydrated and weakly carbonated, mineral assemblage talc - chlorite calcite - chromite+magnetite - ilmenite |  | | Journal (article/letter/editorial) | | illustrating the nature of Archean volcanismin southern Africa and elsewhereare made available for purposesof...mineralization. The Archean mineralization of southern Africa is briefly compared and contrasted with that of...the easternpart southern Africa. of Botswana, the northeasternsegment of South The purposes of this paperare...paperare, briefly,to consider Africa, and Rhodesia,the shield consistsof two crathe nature and distribution...26 SUTHERLAND 27 RETERSBURG 28 MURCHISON 29 BARBERTON 30 MULDERSDRIF 31 AMALIA • 50 1.00 km LEGEND |  | Otto, A., Dziggel, A., Kisters, A. F. M., Meyer, F. M. (2007) The New Consort Gold Mine, Barberton greenstone belt, South Africa: orogenic gold mineralization in a condensed metamorphic profile. Mineralium Deposita, 42 (7) 715-735 doi:10.1007/s00126-007-0135-5 | Journal (article/letter/editorial) | | ARTICLE The New Consort Gold Mine, Barberton greenstone belt, South Africa: orogenic gold mineralization in...in the Palaeo- to Mesoarchaean Barberton greenstone belt, South Africa is one of the oldest recognized...Private Bag X1, Matieland, 7602 Stellenbosch, South Africa mineralization can be distinguished. Loellingite...This early mineralization may correlate with the local D1 deformation. The second and main stage of gold...fluids. Keywords Orogenic gold . Barberton greenstone belt . South Africa . New Consort 716 Miner Deposita |  | | Journal (article/letter/editorial) | | billion years ago at Schagen, East Transvaal district, South Africa YUMIKO WATANABE,1,* BRIAN W. STEWART,2...Abstract—A ⬃17-m paleosol sequence at Schagen, South Africa, which developed on a serpentinized dunite intrusion...and calcite) zones and silicate-rich (serpentines, talc, and quartz) zones; the upper ⬃8 m section is especially...fragments (and minerals) that were transported from local sources (serpentinite and granite) by fluvial and/or...the paleosol sequence were largely supplied from local sources (mostly serpentinite), but the Ca, Sr, and |  | Mills, S. J., Whitfield, P. S., Wilson, S. A., Woodhouse, J. N., Dipple, G. M., Raudsepp, M., Francis, C. A. (2011) The crystal structure of stichtite, re-examination of barbertonite, and the nature of polytypism in MgCr hydrotalcites. American Mineralogist, 96 (1) 179-187 doi:10.2138/am.2011.3531 | Journal (article/letter/editorial) | | Mg6Cr2CO3(OH)16∙4H2O, from the Kaapsehoop asbestos mine, South Africa, have been studied by powder X-ray diffraction...Kaapsehoop asbestos mine, Kaapsehoop, Barberton district, Mpumalanga, South Africa. Barbertonite was initially...98(3) 0.970(3) 0.96(1) Barbertonite, Barberton, South Africa hkl 0 02 0 04 0 10 0 11 0 06 0 12 0 13...84588; Barberton, South Africa Barbertonite 3.09689(6) 15.6193(8) 129.731(8) 92459; Barberton, South Africa...84588; Barberton, South Africa Barbertonite 2.056(3) 2.706(8) 2.94(5) 1.20(24) 92459; Barberton, South |  | van Zuilen, Mark A., Chaussidon, Marc, Rollion-Bard, Claire, Marty, Bernard (2007) Carbonaceous cherts of the Barberton Greenstone Belt, South Africa: Isotopic, chemical and structural characteristics of individual microstructures. Geochimica et Cosmochimica Acta, 71 (3) 655-669 doi:10.1016/j.gca.2006.09.029 | Journal (article/letter/editorial) | | com/locate/gca Carbonaceous cherts of the Barberton Greenstone Belt, South Africa: Isotopic, chemical and structural...deposits of the 3.4–3.2 Ga old Barberton Greenstone Belt (BGB), South Africa, has experienced low grade regional...regional metamorphism and variable degrees of local hydrothermal alteration. Here a detailed study is...altered cherts of the 3.4–3.2 Ga old Barberton Greenstone Belt, South Africa. This study highlights the complexity...samples from the Onverwacht Group of the BGB, South Africa, are described here in detail. The Onverwacht |  | Zegers, T. E., Barley, M. E., Groves, D. I., McNaughton, N. J., White, S. H. (2002) Oldest Gold: Deformation and Hydrothermal Alteration in the Early Archean Shear Zone-Hosted Bamboo Creek Deposit, Pilbara, Western Australia. Economic Geology, 97 (4) 757-773 doi:10.2113/gsecongeo.97.4.757 | Journal (article/letter/editorial) | | amphibolite facies deposits in the Mount York district of the Central Pilbara (Neumayr et al., 1998)...ultramafic volcanic unit, now comprising mainly talc-chlorite mylonitic schist. Similar shear zones occur...stratigraphically lower position a few kilometers to the south of Bamboo Creek and in an area to the north in the...an anastomosing foliation. The footwall to the south consists of a silicified and carbonate-altered volcano-sedimentary...occurs in 100-m-scale boudins, surrounded by the talc-chlorite schist (Fig. 2). The boudins consist of |  | | Journal (article/letter/editorial) | | microbial sulfate reduction Paleoarchean barite Barberton greenstone belt multiple sulfur isotopes a b...a c t Bedded barites from the Barberton greenstone belt (South Africa and Swaziland) preserve a comprehensive...modeling results, we interpret variations in δ34S by local microbial sulfate reduction and correlations with...their role as important in both global oceans and local basins in the Paleoarchean. © 2012 Elsevier B.V...sedimentary barites from the Barberton greenstone belt in South Africa and Swaziland. Barite occurrences |  | | Journal (article/letter/editorial) | | LOWER PART OF THE ARCHAEAN FIG TREE GROUP (SOUTH AFRICA) THOMAS O. REIMER Dyckerhoff Engineering GmbH... lower part of the Archaean Fig Tree Group (South Africa). Precambrian Res., 20: 375--390. The Ulundi...lowermost Fig Tree Group in the type area in the Barberton Mountain Land consists of a sequence of quartz--sericite...and tuffaceous rocks up to 40 m thick. It overlies talc--carbonate schists assigned to the upper part of...the Swaziland Supergroup in the Barberton Mountain Land of South Africa (Fig. 1) is related to the number |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Johannesburg, South Africa A Reappraisal of Some Aspects of Precambrian...contribute to the estabon their geology. In Southern Africa, the Precam- lishment of this highly distinctive...established, and, apart from the institution of local formational names there is no necessity to complicate...differences of sequence and facies changes, together with local unconformities, but, essentially, these belts are...associations that local variations are unimportant. Some of the major Precambrian structures in Africa were first |  | O’Driscoll, B., Clay, P. L., Cawthorn, R. G., Lenaz, D., Adetunji, J., Kronz, A. (2014) Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa?. Mineralogical Magazine, 78 (1) 145-163 doi:10.1180/minmag.2014.078.1.11 | Journal (article/letter/editorial) | | and desulfurization processes at Bon Accord, South Africa? B. O’DRISCOLL1,*, P. L. CLAY2, R. G. CAWTHORN3...University of the Witwatersrand, PO Wits, 2050 South Africa Dipartimento di Geoscienze, Trieste University...serpentinized maficultramafic lavas of the Barberton Greenstone Belt (South Africa). Though now completely mined out... metasomatism, desulfurization, Bon Accord, South Africa. Introduction TREVORITE is a rare Ni-rich spinel...Mineralogical Society ~144 Ma Morokweng crater (South Africa), in a paragenesis that also contains unusual |  | | Journal (article/letter/editorial) | | cleavage, grain size commonly < 100 lm) resemble talc, but the mineral has an attractive purple to lilac...University, P.O. Box 524, Auckland Park, 2006, South Africa Editorial responsibility: T. Grove mixed volatile...(1910) Lancaster (1977) Kaapsehoop, Barberton Min. Land, South Africa Archean No serpentinites asbestos...Amianthus and other mines) Hall (1922) Forbes Roof, Barberton Min. Land, Swaziland Archean No serpentinites...from material in the Adelaide AgPb mine, Dundas district, Tasmania (Petterd 1910). The new mineral was |  | | Journal (article/letter/editorial) | | 7524-1527 (t972) NICKEL MINERALS FROM BARBERTON; SOUTH AFRICA: V. TREVORITE, REDESCRIBED S. A. oe 'We...Nationnl Institute for Metalhrgy, J ohannesbwrg, South' Alrica AssrBacr Trevorite from the well-known...well-known nickel occurrence in the Bon Accord area, Barberton, is redescribed. The mineral is the major constituent...occurrence two .rnileswest of the Scotia Talc Mine, Bon Accord, Barberton, revealedthe existenceof yet another...Weer,, S. A. (1969) Nickel minerals from Barberton, South Africa, I. Ferroan trevorite, Amer. Mineral. s4 |  | | Journal (article/letter/editorial) | | for a gruneritic Archean gold deposit, Barberton, South Africa Patrick J. Williams ) National Key Centre...mine, located some 24 km northeast of Barberton in South Africa, occurs stratabound within carbonaceous...gold; Archean; metamorphism; grunerite; Barberton; South Africa 1. Introduction Stratabound deposits in...rocks of the 3.5–3.0 Ga Barberton granite–greenstone association in southern Africa contain an exceptional...1986a.. The Lily deposit some 24 km northeast of Barberton ŽFig. 1. offers a particular opportunity to study |  | | Journal (article/letter/editorial) | | association in the southeastern Vredefort dome, South Africa Cristiano Lana* and Roger L. Gibson Impact Cratering...Johannesburg, South Africa *Present address: Department of Earth Sciences and Engineering, South Kensington...Witwatersrand, P.O. Wits 2050, Private Bag 3, Johannesburg, South AfricaCorresponding author: Fax: +27 11 3391697;...Johannesburg, South Africa e-mail: minnitt@egoli.min.wits.ac.za © 2003 Geological Society of South Africa ABSTRACT...mafic to ultramafic chlorite-actinolite-hornblende-talc rocks with komatiitic and komatiitic basalt compositions |  | | Journal (article/letter/editorial) | | the Makoppa Dome, northwest Limpopo Province, South Africa C.R. Anhaeusser Economic Geology Research Institute...Private Bag 3, P.O. WITS 2050, Johannesburg, South Africa e-mail: anhaeusserc@geosciences.wits.ac.za ...Private Bag 3, P.O. WITS 2050, Johannesburg, South Africa Present address: Department of Earth Sciences...mpoujol@esd.mun.ca © 2004 Geological Society of South Africa ABSTRACT The Makoppa Dome, located in the far...Archaean granite-greenstone terranes in southern Africa. For this reason it has received very little attention |  | | Journal (article/letter/editorial) | | JTTLY_AUGUST, 1969 NICKEL MINERALS FROM BARBERTON, SOUTII AFRICA: I. FERROAN TREVORITE S. A. nB W.L.Ll...alleged nepouite-trevorite deposit near the Scotia Talc Nline, 'rrlz.violarite, millerite, ferBarberton...of nickel minerals, roan trevorite, nickel-rich talc, nickel rich chlorite, and reevesite. The ferroan...Scotia Tale Mine in the Bon Accord area, Barberton, South Africa, was reinvestigated, mainly to ascertain...associatedsilicate minerals that are reported to be nepouite (South Africa GeologicalSurvey, 1959).During this investigation |  | de Ronde, C. E. J., Spooner, E. T. C., de Wit, Maarten J., Bray, C. J. (1992) Shear zone-related, Au quartz vein deposits in the Barberton greenstone belt, South Africa; field and petrographic characteristics, fluid properties, and light stable isotope geochemistry. Economic Geology, 87 (2) 366-402 doi:10.2113/gsecongeo.87.2.366 | Journal (article/letter/editorial) | | minimumscaleof •60 x 10 km andfor phaseseparation on a local(mine)scale.Evidencefor phaseseparation is notedby...SouthAfrica. 0361-0128/92/1316/366-3753.00 366 BARBERTON GREENSTONE BELT GOLD DEPOSITS 367 b34Ssulfides...largelyconcentrated and Montrose mines are locatedslightlyto the south, therefore,hasa geologichistorythat spansca. 300...volcanics Tonalite Intrusion(Kaap Valley Pluton) BARBERTON GREENSTONE BELT TrondhjemiteIntrusion Syenites...granodiorites Major gold deposit Minorgold deposit AFRICA Cape Town CRATON FIc. 1. Simplifiedgeologicmapof |
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