 | | Journal (article/letter/editorial) | | Genmin, P.O. Box 61820, Marshalltown, 2107, South Africa (Received November 4, 1992; revised version...Witwatersrand gold fields. Assemblages of coexisting pyrophyllite-chloritoid have been recorded in most of the...the gold mines, and the critical assemblage of pyrophyllite-chloritoidmuscovite-chlorite-quartz-tourmaline-rutile-pyrite...biotite, pyrrhotite and arsenopyrite have more local distribution. Pelites ("shales"), quartzites, meta-conglomerates...albeit in different mineral proportions, and pyrophyllite and chloritoid are recorded from many gold-producing |  | | Journal (article/letter/editorial) | | CHLORITE-RICH COMMUNICATIONS NODULES IN THE BEATRIX REEF, WITWATERSRAND G. NEIL PHILLIPS AND Guo-YI...Thisstudy examines the chlorite-rich nodules of the Beatrix reef The Witwatersrandreefs are characterizedby...greenstonebelts minerals,including chlorite, pyrophyllite, quartz, rutile, margarite,graphite(optical...morereducingatmospheredoesnot or acicularchlorite,pyrophyllite,rutile, andmargaresolvethe problemof unusualmineralproportions...chlorite-richnodules,quartzcommonly the Beatrixreef at Welkom, for example,they are formstiny roundinclusions |  | Guy, B. M., Ono, S., Gutzmer, J., Lin, Y., Beukes, N. J. (2014) Sulfur sources of sedimentary “buckshot” pyrite in the Auriferous Conglomerates of the Mesoarchean Witwatersrand and Ventersdorp Supergroups, Kaapvaal Craton, South Africa. Mineralium Deposita, 49 (6) 751-775 doi:10.1007/s00126-014-0518-3 | Journal (article/letter/editorial) | | and Ventersdorp Supergroups, Kaapvaal Craton, South Africa B. M. Guy & S. Ono & J. Gutzmer & Y. Lin & N...and Ventersdorp supergroups, Kaapvaal Craton, South Africa. Detailed petrographic analyses of the reefs...grains from the Main, Vaal, Basal, Kalkoenkrans, Beatrix, and Ventersdorp Contact reefs were analyzed for...Johannesburg, Auckland Park, Johannesburg 2006, South Africa e-mail: bradley.guy@sgs.com J. Gutzmer Helmholtz-Institute...Services, SGS South Africa, 58 Melville Street, Booysens, Johannesburg 2091, South Africa Present Address: |  | | Journal (article/letter/editorial) | | Private Bag 3, PO Wits 2050, Johannesburg, South Africa Present address: Rock Engineering Department...SRK Consulting, PO Box 55291, Northlands 2116, South Africa Wolf Uwe Reimold Impact Cratering Research... Private Bag 3, PO Wits 2050, Johannesburg, South Africa Corresponding author, Fax: +27 (11) 339 1697;...99775-7320, USA © 2003 Geological Society of South Africa ABSTRACT Tectonites from ~2.7-Ga-old Platberg...in H.J. Joel and Harmony gold mines (southern Free State Goldfield) were dated by the 40Ar-39Ar step-heating |  | | Journal (article/letter/editorial) | | Witwatersrand goldfields: generation of chloritoid and pyrophyllite G.N. PHILLIPS, Department of Geology, University...Witwatersrand, Wits, 2050, South Africa Abstract. Chloritoid and pyrophyllite occur together in all major...persistent metapelites that have basin-wide extent. Pyrophyllite is particularly common in foliated zones, adjacent...conglomerates. The wide distribution of chloritoid and pyrophyllite in metapelites of the Witwatersrand Basin is...accounts for the stabilization of chloritoid and pyrophyllite. Relatively immobile elements included Al, Ti |  | | Journal (article/letter/editorial) | | margin of the Archaean Witwatersrand Basin of South Africa associated with regional greenschist facies...deformation. Metamorphic mineral assemblages involving pyrophyllite-chloritoid are associated with gold in all goldfields...in producing gold deposits were the widespread local concentrations of C and Fe on unconformity surfaces...Sciences, University of Stellenbosch, Stellenbosch, South Africa 2 *Corresponding author, email neil@phillipsgold...model. Keywords: Gold, Witwatersrand, Archaean, South Africa, Metamorphism, Devolatilisation, Replacement |  | | Journal (article/letter/editorial) | | and Ca-rich rectorite (sample l) from Beatrix Mine, South Africa, and a Na-rich rectorite (sample 2) from... have been investigatedquantitatively by solid-state 23Na,27A1,and '?eSimagic-anglespinning (MAS) NMR...IxrnonucrroN Recent advances in the methodology of solid state magic-angle spinning (MAS) NMR spectroscopy have...cations, can be determined for rectorite employing state of the art quantitative 23Na,27A1,and "Si MAS NMR...thereby determined to be contiguouspairs of pyrophyllite and pairs of mica layers, linked by fixed K* |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Johannesburg, South Africa With 7 Figures Received August 13, 1998; revised...Group shales from three boreholes to the east and south of the Vredefort Dome is lower greenschist facies...availability of exposure, as almost all of the central and south-eastern portions of the basin are covered by post-Witwatersrand...the deposition of the 2.6-2.2Ga Transvaal 126 South G. Stevens and R. F. Preston , Transvaal Supercjroup...Group - West R a n d G r o u p - Afrikander Lease Mine 5O @ West Rand Group "" ] ~ , i Group Basement |  | | Journal (article/letter/editorial) | | processes, temperature of the Earth’s surface, and state and composition of primary atmosphere at early stages...gneisses (“gray gneisses”) detected, though in local sectors, virtually in all continents and ancient...Rand, (V) Carletonville, (VI) Klerksdorp, (VII) Welkom. (1−12) Major reefs developed in the western fields:...(7) Vaal, (8) Eldorado, (9) Andenk, (10) Beisa-Beatrix, (11) Basal (Steyn), (12) Commonage; (2−4) rock...In this connection, it is worth mentioning that South African geologists (Robb and Robb, 1998; Frimmel |  | Morishita, Yuichi, Hammond, Napoleon Q., Momii, Kazunori, Konagaya, Rimi, Sano, Yuji, Takahata, Naoto, Ueno, Hirotomo (2019) Invisible Gold in Pyrite from Epithermal, Banded-Iron-Formation-Hosted, and Sedimentary Gold Deposits: Evidence of Hydrothermal Influence. Minerals, 9 (7) 447 doi:10.3390/min9070447 | Journal (article/letter/editorial) | | of Limpopo, Private Bag X1106, Sovenga 0727, South Africa Atmosphere and Ocean Research Institute, University...banded-iron-formation (BIF)-hosted Au deposit in South Africa using secondary ion mass spectrometry (SIMS)...epithermal systems, deposits with high-sulfidation-state minerals, including enargite, tennantite, and covellite...reduced fluids are associated with low-sulfidation-state minerals [22]. 2.2. Epithermal Deposits in Kyushu...Iwato, and Akeshi deposits, are in the Nansatsu district of Kagoshima-ken and are thus commonly called |  | | Book | | I hope that this volume provides both a useful state-of-the-art review and an insight into the scientific...Manchester in 1973 (Ph.D.) and was then employed as a mine and exploration geologist by Falcon Mines Ltd in...and applied research in collaboration with the local mining industry. In 1984 he moved to the University...consultant on gold mining and exploration in Europe, Africa, and the Middle East. Professor D.1. Groves Key...geochemical exploration programmes, in France and North Africa, where he has gained considerable experience in |  | | Book (volume) | | British Columbia California Colorado Connecticut District of Columbia Delaware Department Florida Georgia...Wis. Wyo. Yukon 3 New Mexico Nova Scotia New South Wales Northern Territory Northwest Territories New...Pennsylvania Queensland Rhode Island South Australia South Carolina South Dakota Saskatchewan Tasmania Tennessee...(Wales) Aberdeen (Scotland) Aberdeen (South Africa : District) Aberdeen Angus cattle Aberdeenshire (Scotland)...aka 294.382 4 Abhidharmapitaka T2--669 45 Abia State (Nigeria) T2--666 8 Abidjan (Ivory Coast) 153.9 |  | | Book (volume) | | Socialist Republic N.T. N.Y. Neb. Nev. Scotia South Wales Northern Territory Northwest Territories ...Socialist Republic South Australia Ind. Indiana S.C. South Carolina Kan. S.D. South Dakota Ky. Kansas...Australia British Mich. N.J. N.M. Columbia District of Columbia New Hampshire New Jersey New Mexico...(Scotland) Aberdeen (South Africa T2- -429 27 T2- -412 35 : T2- -687 15 District) Aberdeen Angus cattle...Abiogenesis Abitibi (Quebec Regional County Municipality) T2- -666 8 371.254 153.93 371.26 658.311 25 |  | | Report (issue) | | Great Oxidation Event (GOE). The availability of free oxygen would have had a strong effect on the (bio)geochemical...elements that exist in more than one oxidation state in nature. Of the major rock-forming elements, only...famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earth’s largest gold-uranium deposits...post-depositional processes in uranium ores at the Stanleigh mine, Elliot Lake, Ontario, Canada.....................glacier-associated sediments of the Neoproterozoic of south China: Oceanic anoxia or sulfate limitation? .. |  | | Report (issue) | | INrr~~Rl()R • IJ Rl◄:1\ lJ lT () I◄~ l\11 N l◄:s AFRICA *Algiers Tunis • NISIA Tripoli Cairo* ALGERIA...Windhoek* Gaborone * Pretoria * Mbabane REPUBLIC OF SOUTH AFRIC1' \ Maputo * LESOTHO MAURITIUS (J Port... MINERALS YEARBOOK MINERAL INDUSTRIES OF r, AFRICA U.S. DEPARTMENT OF THE INTERIOR BUREAU OF MINES...reports and one world overview: Mineral Industries of Africa, Mineral Industries of Asia and the Pacific, Mineral...obtained from reports of the U.S. Department of State, from United Nations publications, and from the |  | Silver, Bianca J., Raymond, R., Sigman, Daniel M., Prokopeko, Masha, Sherwood Lollar, Barbara, Lacrampe-Couloume, Georges, Fogel, Marilyn L., Pratt, Lisa M., Lefticariu, Liliana, Onstott, T.C. (2012) The origin of NO3− and N2 in deep subsurface fracture water of South Africa. Chemical Geology, 294. 51-62 doi:10.1016/j.chemgeo.2011.11.017 | Journal (article/letter/editorial) | | and N2 in deep subsurface fracture water of South Africa Bianca J. Silver a, b, h, R. Raymond a, h, Daniel...Hall, Princeton, NJ 08544, USA ARCADISU.S., Inc. 8 South River Road, Cranbury, NJ 08512, USA University of...of several Ma from the Witwatersrand Basin, South Africa contains up to 40 μM of NO3−, up to 50 mM N2...in South America (≤15 mM) (Voicu and Hallbauer, 2005) and the Witwatersrand Basin of South Africa (≤70...been reported for the fracture water emanating from mine boreholes at 0.8 to 3.5 km depth in the Witwatersrand |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | SINGAPORE - TORONTO This text is printed on acid-free paper. Copyright ©1997 by John Wiley & Sons, Inc...when mineralogy has close affiliation with solid-state physics, materials science, and inorganic chemistry...Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...Norway. Richard J. Reeder: Dept. of Earth Sciences, State Univ. of N.Y., Stonybrook, NGY:. Louise Reif: U...10. India 11. South east Asia 12. Middle East 13. African Countries, from north to south 14. Oceania 15 |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...Heerenveen granites/pegmatites (Barberton area, South Africa): a possible source for the Dominion Reef quartz...of the pelitic schist in the Dufferin Lake Zone, south central Athabasca Basin, Saskatchewan, Canada ...through polycyclic orogeny: the example of the Litsa district, Russia Anne-Sylvie André-Mayer, Michel Cuney...mantle-crustal ore-forming systems of the Pechenga ore district (Fennoscandian shield) ..................... |  | | Book (edition) | | Flatman, Previously AngloGold Operation, Brakpan, South Africa Ashanti, Ergo C.A. Fleming, SGS Minerals...DC, USA A. Götz, Fraser Alexander, Boksburg, South Africa G. Beale, Schlumberger, Denver, CO, USA S...Green, Retired (previously Mintek, Randburg, South Africa) P. Breuer, CSIRO, Perth, WA, Australia N...Crundwell, CM Solutions (Pty) Ltd, Johannesburg, South Africa G. Deschênes, BBA Inc., Toronto, ON, Canada...Hulbert, Retired (previously Mintek, Randburg, South Africa) ix x List of Contributors M. Jeffrey, Newmont |  | | Book | | the material herein. This book is printed on acid-free paper. Printed in The Netherlands V DR.B.P. RADHAKRISHNA--AN...knowledge and understanding of the Archaean geology of South India. Among his pioneering works are studies of...well-preserved Archaean terrains, such as in the South Indian shield, and to build up and test models...Corporation. He was responsible for starting several state mining ventures to exploit chromite, vii iron...Department of Mines and Geology ot the Karnataka state as early as 1964. This cell has been playing a key |  | | Book (volume) | | England, France, Holland, Israel, Italy, Mexico, South Africa and West Germany made the meeting one of international...Investigations on Eastern Canada Salt Deposits 276 Recent South American Borate Deposits . . . . . . . . . . . ...rocks located in east-central Arizona near the south margin of the Colorado Plateau. The Basin lies between...visions of the formation varies as a result of local studies conducted by individual workers. For operational...Rim and the "upper" Supai sediments thin to the south and southwest suggesting the existence of a paleo-Mogollon |  | | Book (volume) | | Oxford. Newdigate Prize, 1888. Author of Gordon in Africa; Alfred, J Lord Tennyson. Editor of Johnson’s Lives...Commissioner and Commander-in-Chief for the British East ^ Africa Protectorate; Agent and Consul-general at Zanzibar;...Zanzibar; and Consul-general for German East Africa, 1900-1904. *■ C. F. A. Charles Francis Atkinson. ...and' Rhodesia. Author of Geodetic Survey of South Africa; Catalogues of Stars for the Equinoxes, 1850...part). Rev. Dugald Macfadyen, M.A. Minister of South Grove Congregational Church, Highgate. Congregational |  | | Book (volume) | | ALFRED PETER HILLIER, M.D., M.P. A. P. H. Author South African Studies; The Commonweal; &c. Served in Kaffir...with Dr L. S. Jameson in medical practice in South Africa till Member of Reform Committee, Johannesburg...Formerly Assistant Secretary, Board of Education, South Kensington. Author of Ornament in European Silks;...Commissioner and Commander-in-Chief for the British East Africa Protectorate; Agent and Consul-General at Zanzibar;...Zanzibar; Consul-General for German East Africa, 1900-1904. _ C. F. A. -I CHARLES FRANCIS ATKINSON. f |  | | Book | | Window. .......-.2-.u.. 3.0. ee.010 eee The Region South of the Tauern Window % ...40%.+ 52.4... ee ‘Phe... THE TERTIARY DPKVEORs fe Gon... VOLCANIC DISTRICT OF NW BRITAIN Ses mage S:Tehte) 8) 010) Si18)18...continuation of Eurasia and is part of the Old World, for Africa is not completely separated from Eurasia; moreover...Norway on the southwest, and which sinks to the south beneath the East European platform; the Barents...equivalent of the Panafrican orogeny developed in Africa and South America, the Baikalian of Asia and, in a more |  | | Book (volume) | | UF Natchez River (Wash.) BT Rivers—Washington (State) Nachiketas USE Naciketa (Character) Nachman family...(Korea) Naejangsan (Korea) BT Mountains—Korea (South) Naejang San (Korea) USE Naejang Mountain (Korea)...Ethnology—Indonesia Naga (South Asian people) (May Subd Geog) [DS432.N3] UF Nagas [Former heading] Nagna (South Asian people)...people) Noga (South Asian people) BT Ethnology—Burma Ethnology—India Tibeto-Burman peoples NT Anal (Indie...(Indie people) Liangmai Naga (Indie people) Mao (South Asian people) Maram (Indie people) Mikir (Indie |
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