 | | Journal (article/letter/editorial) | | of New South Wales, ,4mtra//a; Morna Mathim, Divi6on of Geologiral Sciences, Uni~rsity oj Cape To~n, Rondebosch...Rondebosch, C. P. South Africa. Introduction Ultt ~mafic xenoliths, which do not resemble any rocks...occurrences of eclogite in the kimberlites of Southern Africa, and Rickwood (in press) has made a companion compilation...contain diamondiferous edo#te xenolitlm. (C.P. -- Cape Province; O.F.S. --- Orange Free State; TvL = TransvaaL)...Doornldoof, C.P. Mitchemanskraal, C.P. Newlands, C.P. Smith Mine, C.P. Sover, C.P. Crown, O.F.S. Jagersfontein |  | | Journal (article/letter/editorial) | | Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field a,⁎, Johann Stiefenhofer...Southdale, 2135, South Africa c De Beers Group Services, PO Box 47, Kimberley, South Africa d De Beers Canada...discovery of diamonds in river deposits in central South Africa in the mid nineteenth century, it was at Kimberley...economic and industrial development of southern Africa. Following the discoveries at Kimberley, even more...more valuable deposits were discovered in South Africa and Botswana in particular, but also in Lesotho |  | | Journal (article/letter/editorial) | | R*CKWOOD** Division of Geological Sciences, University of Cape Town 12,eceived November 4, 1969 Abstract. Brief...in the kimberlites of Lesotho, Rhodesia, Sauth Africa, and Tanzania. Six new mineral assemblages, which...amphibole-eclogite, and garnet-spinel plus garnet-corundum rocks form the new groups. 0pticaldataforkyanite...results in the series Eclogite-+Kyanite-Eclogite->Corundum-Eclogite as crystal cumulates from a melt formed...Johannesburg, South Ah'ica. ** Present address: School of Applied Geology, University of New South Wales, Kensington |  | | Book | | Mitchell, A. Nicolas, D.J. Powell, A.M. Reid, J.V. Smith, N.V. Sobolev, W.E. Stephens, and P.J. Wyllie. In...John Gurney and Joe Smith with whose research groups at the universities of Cape Town and Chicago I have...collaboration. Much of my fieldwork in southern Africa has been carried out with the cooperation and assistance...7.3 2.8 2.9 Africa . . . . . . . . . . . . . . . . . . . . . . . . . . . . West Africa . . . . . . .... . . . . Central Africa. . . . . . . . . . . . . . . . . . . . . . . East Africa. . . . . . . . . . |  | | Journal (article/letter/editorial) | | n d Geochemistry, University of Cape Town, Rondebosch, South Africa Received May 13, 1968 Abstract. The...collection which is stored a t the University of Cape Town. E v e r y suitable sample available to the...eclogite I, eclogite II, kyanite eelogite and corundum eclogite. The reasons for the differences in garnet...stored in the Department of Geology, University of Cape Town, and which was described and illustrated in...vast number of kimberlite occurrences in Southern Africa many are insufficiently explored in depth or too |  | | Book (volume) | | S. R. Hart, I. D. MacGregor, R. H. Mitchell, D. Smith, J. Ro Smyth, H. Go Wilshire The MantleSample...development since the First Kimberlite Conference, held in Cape Town in 1973, has come in the interpretation of...Diamond-Graphite Ecologite From the Roberts Victor Mine, C. J. Hatton and John J. Gurney .................Granulites and Eclogites From Lesotho, Southern Africa, W. L. Griffin, D. A. Carswell, and P. H. Nixon...Garnet Harzburgite XenolithsFrom the Premier Mine, South Africa, R. V. Danchin ........................ |  | | Journal (article/letter/editorial) | | Victor and Bellsbank kimberlite intrusions, South Africa. Calculation of equilibration temperatures using...boundary. IN most of the kimberlites of southern Africa, eclogite nodules are greatly subordinate in numbers... However, the kimberlites of the Roberts Victor Mine some 40 km east of Bishof in the Orange Free State...Bellsbank some 50 km north of Barkly West in the Cape Province are unusual in that nodules of eclogite...suites in the Rietfontein kimberlite further west in Cape Province (Gurney et al., 1971) and in the Orapa |  | | Book (volume) | | PYRRHOTITE GRAPHITE CYANITE SILLIMANITE ZIRCON CORUNDUM • ACTINOLITE - AUGITE PEROFSKJTE - APATITE...DIAMOND-BEARING ALLUVIAL GRAVELS OF THE UNION OF SOUTH AFRICA DIAMOND-BEARING GRAVELS DRAINAGE WEATHERING...SYSTEMS THE ORIGIN OF THE ALLUVIAL DIAMONDS THE SOUTH-WEST AFRICA DIAMOND DEPOSITS THE VAAL RIVER ALLUVIAL GRAVELS...Plate No. 96. THIN SECTION (359, X 12) FONTEIN MINE BRONZITE PERIDOTITE FROM JAGERS facing page 368...following plate MINE THIN SECTION (8, x 12) BRONZITE PERIDOTITE FROM BuLTFONTEIN 98. MINE ,, ,, 99. THIN |  | | 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) | | from 16 intrusions in Lesotho, the Republic of South Africa, and Tanzania have been investigated. The following...bronzite that are found in the kimberlites of northern Lesotho also show some fractures and cracks (NlxoN...the abundance of zircon in the Kimberley and Frank Smith mines, he admitted that zircon may possibly be...intergrowths are particularly common at Monastery mine (WHITELOCK 1973). Among the inclusions in zircon...inclusion of phlogopite in zircon from the Monastery mine (Fig. 1). A semiquantitative analysis proved the |  | | Journal (article/letter/editorial) | | Evolution of a Grospydite From the Roberts Victor Mine, South Africa M.A. Lappin Department of Geology & Mineralogy...contains the most Ca-rich garnets yet found in South African kimberlite xenoliths and also sub-micron...similar to clinopyroxene, except for K20, though local areas of different glass, possibly the result of...collected from the waste tip of the Roberts Victor Mine, Orange Free State. The specimen contains clinopyroxene... Grospydites are apparently rare inclusions in South African kimberlites but have been previously recorded |  | | Book (volume) | | rise and development of the diamond mines of South Africa, from an historical, economic and technical...collect during my many visits to all parts of South Africa where kimberlite deposits occurred and the filing...was necessary to file * "The Diamond Mines of South Africa," by Gardner F. Williams. V . Vl l I I...my attention from the time of my arrival in South Africa was the accidental and cognate inclusions found...had collected specimens from various parts of South Africa for years, it has only been since the publication |  | | Journal (article/letter/editorial) | | upper mantle beneath the Kaapvaal craton, Southern Africa A.B. Woodland , M. Koch Mineralogisches Institut...the Kaapvaal craton in South Africa (Kimberley, Jagersfontein, Frank Smith Mine, Monastery) and Lesotho...coverage from V80 to 220 km. For the Lesotho and South African xenoliths there is a systematic, but not...garnet peridotite xenoliths from the Wesselton Mine, South Africa. However, a detailed analysis of the variation...mantle beneath the Kaapvaal craton of southern Africa. Thermobarometric calculations indicate that our |  | | Journal (article/letter/editorial) | | Alkremite Xenoliths in the Kaalvallei Kimberlite, South Africa 1 GEOSCIENCE CENTRE, DE BEERS CONSOLIDATED...MINES LTD, P.O. BOX 82232, SOUTHDALE, 2135, SOUTH AFRICA 2 BERNARD PRICE INSTITUTE OF GEOPHYSICAL RESEARCH...WITWATERSRAND, PRIVATE BAG 3, WITS, JOHANNESBURG, 2050, SOUTH AFRICA 3 DEPARTMENT OF GEOLOGY, UNIVERSITY OF TORONTO...bimineralic xenoliths, diamond-bearing eclogite, corundum-bearing eclogite, garnet-websterite, alkremite...Group II xenoliths. Isotopic data for Kaalvallei corundum-bearing eclogite and alkremite xenoliths do not |  | | Journal (article/letter/editorial) | | In contrast, eclogite xenoliths from Kuruman, South Africa and Koidu, Sierra Leone stem from protoliths...such as Roberts Victor, Bellsbank, Newlands (South Africa), and Zagadochnaya (Siberia). This overabundance...rights reserved. doi:10.1016/j.lithos.2004.03.038 local enrichment of eclogite within the predominantly...sanidine, orthopyroxene, diamond, graphite, kyanite, corundum, apatite, zircon and sulphides. Recently, olivine...transitions towards this rock group; kyanite and corundum eclogites are group C according to this classification |  | | Book | | calcite, clay minerals and fragments of crustal and local host country-rock. At Lattavaram the kimberlite...Iherzolite nodules in kimberlites(from Lesotho and South Africa) and were analysed for isotopic compositions...Extended Abstract, First Kimberlite Conference, Cape Town, 23. Basu, A. R. and Murthy, V. R.(1977) EPSL...University of the Witwatersrand, Johannesburg, 2001, South Africa) Radiometric age determinations were undertaken...undertaken on 15 kimberlite occurrences in Southern Africa, emphasis being placed on a wide areal distribution |  | | Thesis/Dissertation | | THE VAAL-HARTS CONFLUENCE IN THE NORTHERN CAPE PROVINCE, SOUTH AFRICA By FABRICE GILBERT MATHEYS B.Sc... system in the area as well as the presence of local of the drainage trap sites in the river profile... Anglo-Aaerican Mines Ltd., Corporation of South Africa and De Beers Consolidated for the provision...indicator minerals. The Minerals Bureau of South Africa in Johannesburg for providing the diamond production...of principal geomorphic events in southern 20 Africa since the Mesozoic. Table 3: Classification of |  | | Book | | fields in South Africa 8 1.4 Major kimberlite sites in Russia 9 1.5 Main Russian diamond mine sites and...within Siberian platform 13 1.6 Kimberlite fields south of the White Sea 15 1.7 Diamond placers in Venezuela...kimberlite, Colorado 97 6.7 High wall at Kelsey Lake mine in Colorado with kimberlite breccia lying under...epiclastic facies of kimberlites in central and southern Africa 104 6.11 Lesotho dike swarm 107 6.12 Vertical...southwest Africa 150 8.2 The drainage area of Orange River through major kimberlite fields of South Africa |  | | Journal (article/letter/editorial) | | Exsolved garnet-bearing pyroxene megacrysts from some South African rnbedites KEN-ICHIRO AOKI, HIROKAZU FUJIMAKI...Exsolved garnet~bearing pyroxene megacr;sts from some South African kimberlites. Lithos 13, 269-279. Oslo. ISSN...exsolved phase are found rarely in kimberlites from Frank Smith and Bellsbank. Chemically the cfinopyroxenes...gran~ar-type garnet peridotite xenoliths in Lesotho and South African kimberfites. Mineralogy and chemistry indicate...peridotite and g~Lrnet pyroxenite xenoliths, South Africa (MacCiregor 1973; Boyd 1974), an orthopyroxene |  | Bell, David. R., Rossman, George R., Maldener, Joachim, Endisch, Denis, Rauch, Friedel (2004) Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum. American Mineralogist, 89 (7) 998-1003 doi:10.2138/am-2004-0710 | Journal (article/letter/editorial) | | a kyanite- and corundum-bearing eclogite from the Frank Smith kimberlite, South Africa. The composition...Letlhakane Mine Botswana 27 803 393 0.567 1.66 Brazil 22 165 142 0.371 0.67 FSM-15 Frank Smith Mine South...South Africa 230 1560 780 1.679 3.73 TABLE 2. Composition of kyanite samples in wt. % determined by electron...Harvard Mineral Collection, J. Gurney (Cape Town, South Africa) for sample FSM-15, and De Beers Consolidated...garnets from the subcontinental mantle of southern Africa. Contributions to Mineralogy and Petrology, 111 |  | | Book | | Soc., Brit. Assoc., Inst. Soc. Soc. Psych. Hon. Cape Sc.D. of Good Elect. Eng., Hon. Mem. Roy. Phil... Soc., Chem. Metall. and Mining Soc. of South Africa, Amer. Chem. Soc., Amer. Philos. Soc., Roy....members were Association which held its in South Africa. the it Association natural was Diamonds...and Gold in South render authors of the On a by following the Wayside. to of South Phenomena...Diamond Fields Visit to Africa acknowledgments my with Notices Africa, valuable freely from Reunart’s |  | | Book (volume) | | rmf ' j^lr ^1 THE DIAMOND MINES OF SOUTH AFRICA VOL. II Digitized by the Internet Archive...org/details/diamondminesofso02will THE DIAMOND MINES OF SOUTH AFRICA BY GARDNER F. WILLIAMS, M.A. GENERAL MANAGER...Storing and Handling of Dynamite. The Fire in De Beers Mine, iith July, 1888. The Occurrence of “Mud Rushes...Lapidaries. in in Produc- Orange River Colony, the South Art of Carving taught by The Modern Diamonds...The Old Cutting and Polishing The . Selling. Cape Colony, ; Brazil, . Quality of Diamonds produced |  | | Journal (article/letter/editorial) | | garnet and spinel in an inclusion of alkremite from South African kimbedites. Coesite and sanidine contain...ntshave since confirmed that include coesite, corundum, sanidine, rutile, phlogopite, OH or H,O occursin...Coesite SRV-1 Kyanite SRV-1 Sanidine SRV-1 Corundum JJG-21 08 Rutile EJB-86 Phlogopite SRV-16 99...consistent with molecular H.O in fluid inSouth Africa (Smyth and Hatton, 1977; Schulze and clusions;...l: two spectra grospydite from the Roberts Victor Mine, were selected from the same crystal, 217-pm thick |  | | Report (issue) | | ............................................. Corundum ................................................manganese occurrences of the Cartersville Mining District. Modern research has shown that psilomelane ores...iron and manganese in the Cartersville Mining District during the 1880's and 1890's, and the development...crystals of Graves Mountain, gold crystals of the loud Mine, and amethyst crystals of Rabun, Towns, Wilkes,...the literature, by land lot number, section, and district. More recently described locations generally are |  | | Journal (article/letter/editorial) | | with Cr2O3/Al2O3 of peridotites from the Finsch mine that may be exemplary for Kaapvaal peridotite suites...in Fig. 4a. They belong to a suite of kyanite/corundum eclogites from Bellsbank that are very similar...diagrams of garnets and clinopyroxenes from two corundum eclogites from Bellsbank with pronounced Sr- and...87Sr/86Sr ratios in clinopyroxenes from the two corundum eclogites from Bellsbank. These values are projected...concentrate dumps from the Lace mine on the E-block, the Roberts Victor mine along the Colesberg lineament |
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