 | | 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 (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 |  | | Catalog/List | | lamellae as lnclusions In dark matrix. TN. t 7 •91 ACANTHITE,Chamarclllo, Chile. Ag, S. Shinlng sllver black.../AClOIH0EKITE,Moolhoek Plpe, Lydenburg, Transvaal, South Alnca. ~Fa,, Su., Type locagw,,11,.-lCe+. Fine stool...GAUDEFROIDITE. N'Chwanlng mine No 2. Cape Provinca, South AfrIca. Ca._Mn'~B0..)J 0 1)(0H) . Rare+. Single lustroin...50110. C105 114) BARBERTONITE,Kaapsche Hoop, Barberton D11trlct, Transvaal, Soulh Alrlca. MIJ..Cr, (CO-i...Sulf1de~Anthony.Bidca11,et.al llcnsharrow Grnnitc District(Rcpnnt 1878 cdn ) Collins... 111ui:tratcdEnnclopcJ1a |  | | Book (edition) | | 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...type locality unknown . ..Argentitl inverts to Acanthite bclow 177°C 0 Acctamidc, Cil 3CO 112 , trig...Artrocitc, Ivigtul cryolitc deposit. Ivittuut municipality. southwest Wi tgreenl Greenland. 73. 1492, ZK |  | | Conference Proceedings (Volume) | | interpretive bedrock mapping in the Giyani area (South Africa) .. .........................................area of the Kristineberg VHMS deposit, Skellefte district, Sweden .......................................A. Massive Zn-Cu-Pb deposits in the Røros ore district, Norway: setting and formation ................ The Jörn granitoid complex, Skellefte mining district, Sweden: petrography, lithogeochemistry and emplacement...for VHMS deposits, Kristineberg area, Skellefte District, Sweden ..................................... |  | | Book | | Stellenbosch, Private Bag X 01, Matieland 7602, South Africa V.C. BENNETT Research School of Earth Sciences...KwaZulu-Natal, Private Bag X 54001, 4000 Durban, South Africa (hofmann@ukzn.ac.za) K. HORIE Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (kisters@sun.ac.za) T. KOMIYA Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (jfmoyen@wanadoo.fr) P.A. MUELLER Department...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa R.K. STEVENSON GÉOTOP-UQÀM-McGill and Département |  | | Book | | Stellenbosch, Private Bag X 01, Matieland 7602, South Africa V.C. BENNETT Research School of Earth Sciences...KwaZulu-Natal, Private Bag X 54001, 4000 Durban, South Africa (hofmann@ukzn.ac.za) K. HORIE Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (kisters@sun.ac.za) T. KOMIYA Department of...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa (jfmoyen@wanadoo.fr) P.A. MUELLER Department...Stellenbosch, Private Bag X 01, Matieland 7602, South Africa R.K. STEVENSON GÉOTOP-UQÀM-McGill and Département |  | | Journal (article/letter/editorial) | | University of Queensland in 1970 and joined Broken Hill South as an exploration geologist. In 1978 he joined Western...in the Archean cratons of Western Australia, South Africa, Brazil and India. Limited ranges of fineness...many deposits. For example, the Strydom reef, Barberton has a mean fineness of 889.2 with a standard deviation...tennantite, and sphalerite (Harris, 1986). Homestake, South Dakota, although of Proterozoic age (Wolfgram, 1979...the Witwatersrand compared with those of the Barberton greenstone belt. However, the ranges and means |  | | Journal (article/letter/editorial) | | end-member of the Brabant pegmatite, Karibib, SW Africa, have ixiolite series' from a pegmatite in the...1.485, fl 1.494, 7 1.5o511[OLO]. Named for the district, Canavese, in which the Brosso [M.A. 79-763; A...225. A black spinel with a 8.292/~ from Barberton, S. Africa, has dominant Co and Cr, and is named accordingly...crystals with prosperite (this List) from Tsumeb, SW Africa, are isostructural with talmessite, a 5.9o, b 7...crystals from the tennantite ore of Tsumeb, SW Africa are anorthic, a 5.63, b 7.760, c 5.6o A, a 94.7 |  | | Book | | Germany; Pribram, Czechoslovakia; Broken Hill, New South Wales; Chanarcillo, Atacama, Chile; and in the states...crystals in Cornwall; at Wallaroo, South Australia and Broken Hill, New South Wales. Found in sandstone at...Witwatersrand, South Africa, are the major economic gold producers. The Republic of South Africa is in fact...total annual production. Localities. Apart from South Africa, Above: Gold on quartz from California. Such...in Czechoslo¬ vakia and Romania; in the Alps of South Island, NewZealand;fromCharters Towers, Queensland |  | | Journal (article/letter/editorial) | | magnesian basalts of Al-depleted komatiitic affinity (Barberton-type) with 9 to 12 percent MgO, 15 to 25 ppm Sc...unconformably overlies the North Pilbara terrain to the south and east (Fig. 1). The geology and geochronology...of the ca. 3130 to 3115 Ma Whundo Group to the south (Hickman, 1997a, b; Smith et al., 1998). The West...20o to 45o mainly toward the southwest and south, with local steeper dips attributed to faulting. The intrusion...3015 to 2970 Ma Harding Granitoid Complex to the south. Wallace (1992b) divided the intrusion into a 1 |  | | Book | | Italy, Namibia, Saudi Arabia, Spain, Sweden, South Africa, Switzerland and Uganda, in addition of course...Ontario; and the Mintek Library in Johannesburg, South Africa, all provided literature and other information............................................... Acanthite - Argentite ....................................................... Native silver, electrum, acanthite, cerargyrite and secondary copper minerals .....metals was affected by her two year experience in South Africa where studies of precious metal ores appear |  | | Book | | secondary cementation origin in association with acanthite, stephanite, proustite, pyrargyrite, copper and...Russia; from the Onveiwacht mine, Bushvekl, South Africa and Sudbury, Ontario, Canada. Fine smaller nuggets...(Tasna, Velaque) and Australia (Kingsgate, New South Wales). Cleavable masses up to 12 cm (4 11/L6in)...placers. Large primary deposits are known from South Africa (Premier nline, Kin1berley) and Yakutia, Russia... 15 mm x, Mirnyi, Russia 16 in Kimberley, South Africa. It yielded gem rough for I04 faceted stones |  | | Book | | it forms large accumulations with argentite-acanthite in the cementation zone of ore veins. Abundant...such as alluvial de- | posits at Witwatersrand, South Africa. Apart from being stored in * state gold reserves...copper. The most important deposits are in South Africa (about 70 per cent of world production), with...Canada. Native bismuth is found in deposits in South America in tin- and silver-bearing ore veins, such...or hundreds of metres, which, for instance in South Africa, penetrated rock complexes of a thickness of |  | | Book | | it forms large accumulations with argentite-acanthite in the cementation zone of ore veins. Abundant...such as alluvial deposits at Witwatersrand, South Africa. Apart from being stored in state gold reserves...copper. The most important deposits are in South Africa (about 70 per cent of world production), with...Canada. Native bismuth is found in deposits in South America in tin- and silver-bearing ore veins, such...or hundreds of metres, which, for instance in South Africa, penetrated rock complexes of a thickness of | | | Book | | it forms large accumulations with argentite-acanthite in the cementation zone of ore veins. Abundant...such as alluvial deposits at Witwatersrand, South Africa. Apart from being stored in state gold reserves...copper. The most important deposits are in South Africa (about 70 per cent of world production), with...Canada. Native bismuth is found in deposits in South America in tin- and silver-bearing ore veins, such...or hundreds of metres, which, for instance in South Africa, penetrated rock complexes of a thickness of |  | Hazen, R. M., Papineau, D., Bleeker, W., Downs, R. T., Ferry, J. M., McCoy, T. J., Sverjensky, D. A., Yang, H. (2008) Mineral evolution. American Mineralogist, 93 (11) 1693-1720 doi:10.2138/am.2008.2955 | Journal (article/letter/editorial) | | EvOLUTION 3200 ±3230 Fig Tree & Moodies Groups, Barberton greenstone belt ±3460 3465 ±3500 ±3530 3600 ...deposits (ca. 3490 Ma, Pilbara & Barberton) Onverwacht Group, Barberton greenstone belt Oldest microfossils...3.25 Ga Fig Tree Group of the Barberton Greenstone Belt in South Africa. The mineralogy of BIFs can be...(FeS2), siderite (FeCO3), and uraninite (UO2) in the South African Witwatersrand and Canadian Blind River Archean...known barite deposits (3.5 to 3.4 Ga) are from South Africa, Western Australia, and India (Strauss 2003; |  | | Journal (issue) | | Marie, Munchen or by post: ARC DE SANT Mаr1i 79 Local, 08032 Barselona, Spain • KUSTOS- Jonh S. White... Carbides — cohenite, moissanite. Sulfides — acanthite, antimonite (х1), arsenopyrite, bornite, chalcocite...the vicinity of the Petropavlovka Village, 3 km south of the town of Simferopol'. Volcanites o f the Bodrak—Karadag...shore cliffs of Staиrnyn-Buren Mountain, 0.5 km south of the village, beautiful druses of rock crystal...km from west to east, and 117 km from north to south. The total area is 2540 km'. There are many artificial |  | | Book | | Useful information can, and should, be obtained from local government and environmental agencies before visiting...Geological Science, University of Cape Town, South Africa; 65 & 127, Ian Coulson, University of Regina...process is when movement of the Africa mirrored the east coast of South Making continents Earth’s crust...in various places, including the Tethys Seaway. South-western North America was flooded by the Sundance...Indo-Australian, North American, Antarctic and South Why plates move formed at the mid-ocean ridge |  | | Book | | secondary cementation origin in association with acanthite, stephanite, proustite, pyrargyrite, copper and...Russia; from the Onvcrwacht mine, Bushveld, South Africa and Sudbury, Ontario, Canada. Fine smaller nuggets...(Tasna, Velaque) and Australia (Kingsgate, New South Wales). Cleavable masses up to 12 cm (4'Vk.in) described...placers. Large primary deposits are known from South Africa (Premier mine, Kimberley) and Yakutia, Russia...Diamond, 15 mm x, Mirnyi, Russia in Kimberley, South Africa. It yielded gem rough for 104 faceted stones |  | | Journal (issue) | | these minerals are mined for industrial use. South Africa is the world's largest producer of gold, which...fluorescence. M NERALS 0 rr- m ("") -I ACANTHITE IS A SILVER SULPHIDE MINERAL 0 . ,..,. WHICH...:::XJ INTO THE CLOSELY RELATED ARGENTITE Cl) Acanthite is nearly always black or grey in colour and specimens...spiky crystal shapes. SIMILAR MINERAL Although acanthite is closely related to argentite and the two minerals...geologists and chemists. Both argentite and acanthite are sulphides of silver and have exactly the same |  | | Journal (article/letter/editorial) | | 919-677-0977 or 800-852-7323, Fax: 919-677-1714 Journal of South American Earth Sciences Elsevier Science, www.elsevier...Vol. 100, 2019 Genesis of the South Zhuguang uranium ore field, south China: Fluid inclusion and H-C-O-S-Sr...chromitites of the western Bushveld Complex, South Africa—Kai Bachmann, Inga Osbahr, Raimon Tolosana-Delgado...chemistry, and geochronology at the Gejiu tin district—Yanbo Cheng, Carl Spandler, Anthony Kemp, Jingwen...contributes to the rare earth element (REE) enrichment in South Qinling carbonatites—Wei Chen, Jue Lu, Shao-Yong |  | | Report (issue) | | the Loveland Ski Area to the confluence with the South Platte River in metro Denver. Waters in Clear Creek...been extracted from ores in the Leadville mining district. This large-scale mining also extracted its toll...has developed a collaborative process (involving local, State, and Federal agencies, mine corporations...Department of Geological Sciences Rondebosch, South Africa 7700 ACZ Laboratories, Inc. 30400 Downhill...and tailings piles in the Coeur d'Alene mining district information for the geoenvironmental component |  | | Report (issue) | | 4 2496Q (Cu/Ni)—East Gold mine, Bowser River district, Portland Canal area, B.C. Composition close...11; Z = 4 521 (Cu/Ni)—Germanson Landing, Omineca district, B.C. (about 80 per cent silver). Pattern similar...On°-Fm3m; a = 3.872; 1333 (Cu/Ni)—Sheep Creek, district, Yukon (ferrian platinum) Z = 4 Kluane Cell...trict, Yukon; East fork of Nansen Creek, Carmacks district, Yukon; and Red Cloud Boulder d(calc.) Soil...Clear Creek, McQuesten district, Yukon (placer); Highet Creek, Mayo district, Yukon (placer); Windpass |  | | Report (issue) | | The term designated a unit of weight for gold in Africa and for diamonds in India. The karat scale was...extraction of gold from the fossil placers in South Africa and helps to underwrite those mines' gold production...mine at Bull Hill in Colorado 's Cripple Creek district. The area boasted 12 shafts, some reaching depths...Carpathians; gold in placers in the Schemnitz district of Bohemia with early Celtic minting; placer gold...ducat. Gold continued to flow into Europe from the south and the east. It also came into the European economy |
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