 | | 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) | | country should he on view in the “city of gold.” South Africa is not well known for its institutional or statefunded...treasures of the earth. not only from South Africa but also from southern Africa as a whole and other regions...Mines and the Museum of the Geological Society of South Afiicil (Kennedy 1970). The Chamber of Mines collection...secretary and treasurer of the Geological Society of South Africu.) Several years later, in 1904, the collection...mammal-like reptiles from the famous Karoo region of South Africa, Cretaceous ammonites, Permian and Triassic |  | Hazen, R. M., Golden, J., Downs, R. T., Hystad, G., Grew, E. S., Azzolini, D., Sverjensky, D. A. (2012) Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere. American Mineralogist, 97 (7) 1013-1042 doi:10.2138/am.2012.3922 | Journal (article/letter/editorial) | | 2005). The world’s largest Hg deposit, the Almadén district of central Spain, is representative of concentrations...reworking of the mercury-hosting rocks of the Almadén district (primary mineralization 427–380 Ma) led to at...1958], as well as in amalgams with copper, lead, silver, and gold (e.g., Chen et al. 1985). Mercury mineral...west-central California. This important mining district, including the New Almadén mine in Santa Clara...in the literature. For example, the Hg mining district of Pike County, Arkansas, is hosted in Carboniferous |  | | 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 |  | Argapadmi, Windeati, Toth, Eniko R., Fehr, Manuela A., Schönbächler, Maria, Heinrich, Christoph A. (2018) Silver Isotopes as a Source and Transport Tracer for Gold: A Reconnaissance Study at the Sheba and New Consort Gold Mines in the Barberton Greenstone Belt, Kaapvaal Craton, South Africa☼. Economic Geology, 113 (7) 1553-1570 doi:10.5382/econgeo.2018.4602 | Journal (article/letter/editorial) | | Economic Geology, v. 113, no. 7, pp. 1553–1570 Silver Isotopes as a Source and Transport Tracer for Gold:...Consort Gold Mines in the Barberton Greenstone Belt, Kaapvaal Craton, South Africa* Windeati Argapadmi, Eniko...Clausiusstr. 25, 8092 Zürich, Switzerland Abstract Silver isotopes are a potential tracer for understanding...with silver as a stable alloy component. This study applies high-precision measurements of silver isotope...Archean (3.55–3.10 Ga) Barberton greenstone belt of the Kaapvaal craton in South Africa. Published structuralgeologic |  | | 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 |  | Zaccarini, F., Tredoux, M., Miller, D. E., Garuti, G., Aiglsperger, T., Proenza, J. A. (2014) The occurrence of platinum-group element and gold minerals in the Bon Accord Ni-oxide body, South Africa. American Mineralogist, 99 (8) 1774-1782 doi:10.2138/am.2014.4848 | Journal (article/letter/editorial) | | gold minerals in the Bon Accord Ni-oxide body, South Africa Federica Zaccarini1,*, Marian Tredoux2, Duncan...University of the Free State, Bloemfontein 9300, South Africa 3 Department of Crystallography, Mineralogy...enigmatic Ni-oxide body of Bon Accord (Barberton greenstone belt, South Africa) have been investigated with the...hydroseparation, heavy mineral concentrate, Barberton greenstone, South Africa Introduction Platinum-group minerals...enigmatic Bon Accord Ni-oxide body (Mpumalanga Province, South Africa). Internal texture and composition |  | | Journal (issue) | | Twenty-three, Number Three ® Articles Gold in South Africa ..............................................and this must have introduced him to many other local mineral collectors and possibilities for further...of this typically natrolite covered material for local dealers as well as himself. He used much of this...lent a distinction to his stock of minerals that local dealers found hard to match. During his time with...later years he just purchased from the miners and local dealers. He did not like to be hurried, and drove |  | | 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 | | | Journal (issue) | | Mowry Place Tucson, AZ 85741 Articles Gold in South Africa ..............................................and this must have introduced him to many other local mineral collectors and pos sibilities for further...of this typically natrolite covered material for local dealers as well as himself. He used much of this...lent a distinction to his stock of minerals that local dealers found hard to match. During his time with...later years he just purchased from the miners and local dealers. He did not like to be hurried, and drove |  | | Journal (article/letter/editorial) | | spinels in 3.24 Ga impact spherules, Barberton greenstone belt, South Africa Alexandra E. Krull-Davatzes a,b...Editor: R.W. Carlson Keywords: spherule spinel Barberton Archean oxygen atmosphere a b s t r a c t The...in the S3 spherule bed in the Barberton greenstone belt, South Africa, provides important clues about...Archean spherules from the Barberton greenstone belt (BGB), South Africa (Byerly and Lowe, 1994). Studies...impact-produced spherule bed in the Barberton greenstone belt, South Africa. Because these spinels formed within |  | | Journal (article/letter/editorial) | | Sulphide Body of the Uitkomst Complex, Mpumalanga, South Africa H.F.J. Theart Department of Earth Sciences...Sciences, University of Pretoria, Pretoria, South Africa E-mail: htheart@postino.up.ac.za C.D. de Nooy...Mining Limited, P O Box 1212, Florida, 1710, South Africa E-mail: dorritn@avmin.co.za ABSTRACT Platinum...sulphide ore of the Uitkomst Complex, Mpumalanga Province, South Africa. Mineralogical investigations were...elsewhere. Although the mine is currently regarded as South Africa’s only primary nickel producer, the sale |  | | Journal (article/letter/editorial) | | Tree barite deposits from the Barberton Greenstone Belt, South Africa. The goal is to address two questions:...out-fluxes (sinks) Fout. 3.2 Ga barite from South Africa dC=dt ¼ F in ðfow ; fmh ; fph ; fde Þ F out...may have existed. Archean barite deposits in South Africa (Reimer, 1980; Wilson and Versfeld, 1994), Western...barite from the Fig Tree Group, Barberton Greenstone Belt, South Africa; the Warrawoona Group, North Pole...barite (3.230–3.260 Ga) (Lowe and Byerly, 1999a), South Africa. We have measured all five stable isotope compositions: |  | | Book (edition) | | Southern Africa a Collector’s Guide ■ Rocks, Minerals and Gemstones of Southern Africa & — - ... T ~ '' .rats en&nes L of Southern Africa A Collector’s Guide - Struik Publishers (an operating...suggestions and advice. Author’s Preface Southern Africa has much to offer the amateur geologist, whatever...best plan is to take local advice wherever you are. 9 In small places try the local police station first...usually helpful and will know it there are any local gem clubs and how to get in touch with them. There |  | | Journal (article/letter/editorial) | | MiningTechnology Laboratory, Chamber of Mines of South Africa, Johannesburg A relationship has been established...deposits, such as the rivers of the Barberton Mountain Land, South Africa and the river Rhine in Germany....distance of transport because of the leaching of the silver from them. The Witwatersrand gold particles on...retained their primary fineness, because leaching of silver in the oxygen-deficient Precambrian atmosphere...SAMPLING SITES The primary gold deposits in the Barberton area occur almost exclusively in the Archean greenstone |  | | Journal (article/letter/editorial) | | VentersdorpSystemsof the Klerksdorp gold field (South Africa) was studiedby meansof scanningelectronmicroscopy...(3) gold associatedwith carbonaceousmaterial. The silver content, expressed in fineness, of the gold from...gold is identical. No selectiveredistributionof silver took place during the formation of gold of types...types 2 and 3 from the detrital gold. The silver contentof the gold varied significantlyaccordingto stratigraphy...reducingenvironmentduring Witwatersrand times, no silver was leachedfrom the gold during its fiuviatile |  | | Journal (article/letter/editorial) | | University of Cape Town,Rondebosclz 7700, Cape Town,South Africa, E-mail: maarten@cigces.uct.ac.za National Botanical...Institute, Private Bag X101,Pretoria, 0001, South Africa, E-mail: gondwana@absamail.co.za (Manuscript...numbered) through Africa and extending from the Galapagos Islands across to South America (see also Anderson...ancestor at around 7 Ma in the tropical forests of Africa. Sources as indicated on figure. Symposium (Christchurch...SustainableDevelopment (WSSD; Johannesburg, South Africa). The GA Corridors concept was launched simultaneously |  | | Journal (article/letter/editorial) | | 1 University of Witwatersrand, Johannesburg (South Africa) 2McMaster University, Hamilton, Ont. (Canada)...samples of komatiites and related rocks from Barberton, South Africa. All the rocks give Au values in the ranges...from the t y p e area in the Kaapvaal craton of South Africa, using modern neutron-activation methods. SAMPLE...Ultramafic Unit of the Onverwacht Group in the Barberton greenstone belt. In the Nelshoogte Schist Belt...serpentinized than their counterparts elsewhere in the Barberton greenstone belt. Mineralogicaily these rocks contain |  | | 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...quartz veins. It appears that most, if not all, of local silicification in rocks is spatially related to |  | | Book (volume) | | Library); April Davies (lowa City Community School District); Lynn El-Hoshy (Library of Congress); Sara Shatford...College of Law); Scott Opasik (Indiana University, South Bend); Tom Williamson (retired staff engineer, Intel)...University); April Davies (lowa City Community School District); Daniel Joudry (University of Pittsburgh); Patricia...studi di Padova); Peter Donovan (University of New South Wales); John Hostage (Harvard Law School); Dorothy...State Library of South Africa, and to librarians in the United Kingdom and South Africa, for their contributions |  | | Book | | industry which today is of great importance to the South African steel makers. It took thirty four years...George V, at the inauguration of the Union of South Africa in 1910. Diamonds and Clay A P Cartwright...hardly mentioned at all — is a famous name in South Africa today, but never as famous as it was, and still...man who was to make the family name famous in South Africa was the grandson of one of these restless Irishmen...was destined to become the founding father of the South African Cullinan clan. A second son named James |  | | Report (issue) | | Catalogue ian yan Sera a Age Artefacts from Southern Africa in The British Museum Peter Mitchell A with...Catalogue of Stone Age Artefacts from Southern Africa in The British Museum Peter Mitchell with contributions...Catalogue of Stone Age Artefacts from Southern Africa in The British Museum Peter Mitchell with contributions...and cleavers, Pniel, Northern Cape Province, South Africa (photograph, P. Mitchell) For acomplete catalogue...Southern Africa Physiography Climate Ecological zones Historical Geography of Southern Africa 2. Southern |  | | 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 |  | | 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) | | Concentration of Gold in the Early Precambrian of Southern-Africa R. P. VILJO~N*, R. SAAGER** and M. J. VILJOEN*...Geology, University of Witwatersrand, Johannesburg, South Afrika ** Vancouver, Canada The important gold...gold deposits of the early Precambrian of Southern Africa are confined to two main geologic environments...of a granite-greenstone terrain similar to the Barberton region of the Eastern Transvaal. An attempt is...Granit-Grtingestein-Komplexen, wie sie in der Umgebung yon Barberton im 6sdichen Transvaal auftreten, gesucht wetden |
|
