 | | 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) | | Technology, Private Bag X3015, Randburg, 2125 (South Africa) ABSTRACT Smits, G., 1984. Some aspects of...matrix, listed in approximate order of significance: quartz, pyrophyllite, sericite, pyrite, chlorite, and...Black, reticulate texture in core is caused by quartz. West Rand Consolidated G.M., Monarch Reef. (b)...original uraninite grain, which was replaced by quartz. On its inner and outer surfaces, the brannerite...grain, consisting of coffinite, churchite, and quartz (black core) enclosing pyrrhotite laths (white) |  | | Journal (article/letter/editorial) | | containsa brief descriptionand plan of the Orange Free State Goldfield (p. 716-718). As it is the firstti... and both have been folded together on Free State Geduld Mine. The western edge of the goldfieldis delimitedby...Upper Witwatersrandsediments presentin the Orange Free State Goldfield have a number of reef horizons con...containing• to 1 inch diameterrounded.pebblesof quartz and sub-angularto sub-roundedpebblesof black chert...oneoriented low-value shoot has been found on Free State Geduld Mine. In this mine's No. 2 Shaft area the |  | | Journal (article/letter/editorial) | | containsa brief descriptionand plan of the Orange Free State Goldfield (p. 716-718). As it is the firstti... and both have been folded together on Free State Geduld Mine. The western edge of the goldfieldis delimitedby...Upper Witwatersrandsediments presentin the Orange Free State Goldfield have a number of reef horizons con...containing• to 1 inch diameterrounded.pebblesof quartz and sub-angularto sub-roundedpebblesof black chert...oneoriented low-value shoot has been found on Free State Geduld Mine. In this mine's No. 2 Shaft area the |  | | Journal (article/letter/editorial) | | minerals: rhodium sulfide and (Pt, Rh, Ru) alloy. Free grains of geversite,moncheite,sudburyite,and stibiopalladinite..."iridosdescriptions have beenpublished. The first was by phases mine I" and "iridosmine II." lie found that both Young...osmiridium,which he noted was ore at Rietfontein mine. also present. Horwood (1912) had two concentratesspectroHiemstra...it appearsthat the Os may Anglo Corporationof South Africa Limited were have been underestimated, since...containing numerous Pt-rich (e.g., phyllosilicates and quartz), suggestingthat exsolutionlamellaesimilar in compositionto |  | | Journal (article/letter/editorial) | | Genmin, P.O. Box 61820, Marshalltown, 2107, South Africa (Received November 4, 1992; revised version...assemblage of pyrophyllite-chloritoidmuscovite-chlorite-quartz-tourmaline-rutile-pyrite is found in most gold...biotite, pyrrhotite and arsenopyrite have more local distribution. Pelites ("shales"), quartzites, meta-conglomerates...Fluids in equilibrium with pyrophyllite-muscovite-quartz-pyrite + paragonite are inferred during metamorphism...~r' ...°o ,,~.,. •.; :,... Loraine ~ F r e e State Geduld Western ~ 0 25 50 km Hol ding~"~,~rereaident |  | Reimold, W.U., Meshik, A.P., Smits, G., Pravdivtseva, O.V., Shukolyukov, Yu.A. (1995) Fission xenon dating of Witwatersrand uraninites: Implications for geological activity in the Central Kaapvaal Craton about 1 Ga ago. Geochimica et Cosmochimica Acta, 59 (24) 5177-5190 doi:10.1016/0016-7037(95)00354-1 | Journal (article/letter/editorial) | | Welkom Goldfields of the Witwatersrand Basin in South Africa. These samples were dated by the Xe~-Xe, spectrum...Blyvooruitzicht Gold Mine, 1.043 _+ 0.024 Ga for the Basal Reef sample from Free State Geduld Gold Mine, 1.115 _...Nigel Gold Mine, and 1.300 _+ 0.058 Ga for the Ventersdorp Contact Reef sample from Kloof Gold Mine. No apparent...in the central part of the Kaapvaal Craton in South Africa is well-known for its exceptional gold mineralization...m DOMINIONGROUP ['~'~IGRANITE BASEMENT • GOLD MINE Free S t o t ~ Geduld WELKOM' 0 20 ¢0 60 80 |  | | Report (issue) | | Genesis of Uraniun1- and Gold-Bearing Precan1brian Quartz-Pebble Congloinerates Proceedings of a Workshop...GOLD-BEARING PRECAMBRIAN QUARTZ-PEBBLE CONGLOMERATES to w Polished specimens of quartz-pebble conglomerate...ore. Both actual size. A2 A. AB Reef, Denison Mine, Elliot Lake, Ontario. (Samples courtesy of V. Ruzicka...Photograph, artificial light. Note distribution of quartz pebbles; fine-grained pyritiferous matrix concentrated...Leader Reef, about 1500 m depth, Blyvooruitzicht Gold Mine, Carletonville, Witwatersrand. (Sample courtesy |  | | Journal (issue) | | sTaett * sou™ paance saces Pra oo 6 & suremon ST an state a oo mc CaD s! The World s Lerge execute NOLAN’...Subscription in United States, North Central and South America, $3.00 per year; other countries, $4.00... Box 619, New York Johannesburg, 4, N.Y South Africa ® Lilestone& Co., Inc., P.O. Box 3368, Manila...sold,”’ says President “We're thoroughly sold on the Tournarocker,” says A. C. Hall, President of Fort Hartford...underground .and give you years of dependable, trouble-free service. : For complete information of Pacific |  | | Book | | THE MACMILLAN COMPANY OF CANADA, TORONTO South Africa THE OXFORD UNIVERSITY PRESS, CAPE TOWN India...past activities. To-day there is little need to re-state such a connection; for there are few now who do...friend, Mr. Robert Gilkison, and by visits to the mine worked by another old friend, Mr. R. T. Symes. I...A. Walker, who gave similar assistance with my South African chapter; and many others who have spared...4- Victoria .... 5- South Island of New Zealand 6. Australia 7- South Africa 8. Alaska and the Yukon |  | | Book | | THE MACMILLAN COMPANY OF CANADA, TORONTO South Africa THE OXFORD UNIVERSITY PRESS, CAPE TOWN India...past activities. To-day there is little need to re-state such a connection; for there are few now who do...friend, Mr. Robert Gilkison, and by visits to the mine worked by another old friend, Mr. R. T. Symes. I...A. Walker, who gave similar assistance with my South African chapter; and many others who have spared...4- Victoria .... 5- South Island of New Zealand 6. Australia 7- South Africa 8. Alaska and the Yukon |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Wits, 2050, South Africa Abstract. Chloritoid and pyrophyllite occur...particularly common in foliated zones, adjacent to quartz veins, and near unconformably overlying auriferous...the distribution of chloritoid and pyrophyllite, quartz veining and textures. F1uid:rock ratios calculated...interpreted to be diamictites, in the west of ERPM gold mine (D. Martin, personal communication, 1986). Mature...and pyrophyllite are common in reefs as matrix to quartz pebbles, associated with pyrite and muscovite. |  | | Journal (article/letter/editorial) | | composition of galenas from the Witwat~~rand and Orange Free State, and their relation to the Witwatersrand and...various mines in the Witwatersrand and the Orange Free State. Certain of the galenas have large proportions...radiogenic lead, and one sample from the St. Helena mine contains a spectacular variation in the proportions...galenas from quartz veins and calcite veins in the Witwatersrand and Orange Free State. An account ofcertain...understanding of cerOain problems in ore-genesis and in South African stratigraphy; definition and discussion |  | | Book | | BEAVER, M . A. AN HISTORICAL GEOGRAPHY OF SOUTH AFRICA ' GEOGRAPHIES FOR ADVANCED STUDY Edited by...Malaya, Indonesia, Borneo and the Philippines West Africa The Scandinavian World A Regional Geography of...Human Geography AN HISTORICAL GEOGRAPHY OF SOUTH AFRICA BY N. C. POLLOCK, B.A., B. LITT., M.A. AND...A Portuguese map based on Ptolemy's outline of Africa 13 Portuguese caravel 28 Portuguese map of the...town 173 47 De Kaap Pioneer Battery at Moodie's mine near Barberton, Transvaal, 1888 48 Alluvial diamond |  | | 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) | | Empire Street, WITS 2050, Gauteng, Johannesburg, South Africa a r t i c l e i n f o Article history: Received... a b s t r a c t The Witwatersrand Basin in South Africa has been the focus of gold exploitation for...the Free State (Welkom), Klerksdorp, West Wits Line, West Rand, Central Rand, East Rand and South Rand.... . . . . . . . . . . . . . . . . . . . . 3.2. South Rand goldfield . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . Free State (Welkom) goldfield . . . . . . . . . . . . . |  | | Journal (issue) | | Subscription in United States, North Central and South America, $4.00 per year; other countries, $5.00...New York Murray Hill 3-9294 Stanley H. Dayton District Manager Chicago Office 1791 Howard Street Chicago...Chicago 26, Illinois Rogers Park 4-3420 District Manager Fred R. Sargent Vancouver, B. C. Office 402 Pender...Walter F. Vogeno Sa | CORRESPONDENTS: Africa—JohannesUnion of South Africa; Salisbury, Southern Rhodesia Kalulushi...production 1961 planning, cost analysis, time study, mine management, and business methods. Company presidents |  | | Report (issue) | | deposits (S) ........................ Deposits in quartz-pebble conglomerates (G)........ Vein and vein-type...stocks, and other igneous rocks (D) .............. Free world resources and production.................................................................. South America................................................... 158 Africa.................................................. 175 South Africa, Republic of............................. 175 Namibia (South West Africa)........................ ZaTre, Republic of |  | | Journal (article/letter/editorial) | | Witwatersrand Conglomerates from the Orange Free State Goldfield (South Africa) M. SCHIDLO~VS KI Mineralogisch-Petrographisches...Witwatersrand conglomerates from the Orange Free State goldfield (South Africa) has confirmed that the bulk of this...Conglomerates Introduction The Witwatersrand Basin in South Africa is by far the most important gold producing...some 2315 million ounces (about 72006 tons), the South African deposits have contributed more than one...the development of new mining fields (Orange Free State, West Wits Line, Kinross area). Whereas in 1951 |  | | Report (issue) | | BELARUS BELGIUM BELIZE BENIN BOLIVIA, PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI...SEYCHELLES SIERRA LEONE SINGAPORE SLOVAKIA SLOVENIA SOUTH AFRICA SPAIN SRI LANKA SUDAN SWAZILAND SWEDEN SWITZERLAND.........................................59 3.3.4. Mine data .............................................Kazakhstan Canada Russian Federation Namibia South Africa Niger Brazil China Greenland (Denmark) Ukraine...Rössing in Namibia and the closure of the Kayelekera mine in Malawi as a result of low prevailing uranium |  | | Journal (article/letter/editorial) | | margin of the Archaean Witwatersrand Basin of South Africa associated with regional greenschist facies...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...Origin of Witwatersrand gold 1 (A) Map of southern Africa showing the major Archaean cratons; the Witwatersrand |  | | Book | | THE GREAT LANDS GOLD OF SOUTH A VACATION RUN FREE VISITING THE THE IN CAPE OF ZULULAND;...THE TO NARRATIVE OF COLONY, AND STATE, DIAMOND SCENES AFRICA NATAL, AND WAR WHICH ARE THE...a and work will see visit in South to that South Africa together are in the the and the...and and or the through, scenes views been Africa, of part travellers, settlers, gold familiar.... .280 288 DARTMOUTH THROUGH A HARBOUR. SOUTH VACATION RUN. I. CHAPTER GOING Those will |  | | Report (issue) | | IAEA-TECDOC-427 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES REPORT OF THE WORKING GROUP...VIENNA, 1987 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES IAEA, VIENNA, 1987 IAEA-TECDOC-427...IAEA-TEC-DOC-361 1985 Uranium Deposits in Proterozoic Quartz-Pebble Conglomerates - Desmond Pretorius - (This...this project on Uranium Deposits in Proterozoic Quartz Pebble-Conglomerates, and to his colleagues and...mention of specific companies or of their products or brand names does not imply any endorsement or recommendation |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Government Private Bag X85, Price R5,30 Abroad Post Free ISBN Printer, Bosman Pretoria, 0001 R6,65 O...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic |  | | Book | | HISTORY The British, the Boers, and the Making of South Africa “[An] accessible, nimble and moving account...creation of pre-apartheid South Africa.” —Washington Post Book World SOUTHERN AFRICA was once regarded as...leading up to the founding of the modern state of South Africa in 1910, Martin Meredith portrays the great...lay behind Britain’s empire-building in southern Africa. Diamonds, Gold, and War is a tale of high adventure...review The British, the Boers, and the Making of South Africa Martin Meredith is a journalist, biographer |
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President Brand Mine, Matjhabeng Local Municipality, Lejweleputswa District Municipality, Free State, South Africa