 | | Journal (article/letter/editorial) | | PO Box 524, Auckland Park 2006 Johannesburg, South Africa brucec@uj.ac.za Figure 1. Bultfonteinite on...view 11 cm, from the Dutoitspan mine. Although not from Bultfontein mine, this specimen is historically...donated by C. E. Adams to the MacGregor Museum in Kimberley. The color and habit of this Dutoitspan bultfonteinite...evidenced from a specimen attributed to the Bultfontein mine by Irocks.com (www.irocks.com/ minerals/specimen/3705;...Bultfonteinite Bultfontein Diamond Mine Kimberley, South Africa B ultfonteinite, Ca2[SiO3(OH)]F·H2O |  | | Journal (article/letter/editorial) | | collection of 107 diamond crystals was cataloged by Count de Bournon in 1815. Another early British collector...assembled a suite of nine crystals for Mlle. Eleanore de Raab in 1791. In the 20th century, Paul Seel (1904â1982)...dynasty (320â298 B.C.) who regulated an active local diamond trade (Maillard, 1980). Legends associated... Figure 4. A diamond crystal in âblue groundâ from South Africa, probably from the collection of Gardner and...stream beds, possibly very far from the primary kimberlite pipes. However, some also were probably found |  | | Journal (article/letter/editorial) | | in 2009 at Petra Diamonds, Ltd., Cullinan diamond mine, located east of Pretoria, and photographed in June...[University of New Brunswick] at 01:58 29 May 2014 South African Diamonds Department of Geology University...Johannesburg PO Box 524 Auckland Park 2006 Gauteng, South Africa brucec@uj.ac.za A Photographic Personal Perspective...the social, economic, and political fabric of South Africa. For more than 140 years, these two commodities...originally the mainstay of the South African mining industry, and although South Africa no longer leads the world |  | Smith, C.B., Allsopp, H.L., Garvie, O.G., Kramers, J.D., Jackson, P.F.S., Clement, C.R. (1989) Note on the UîžPb perovskite method for dating kimberlites: Examples from the Wesselton and De Beers mines, South Africa, and Somerset Island, Canada. Chemical Geology: Isotope Geoscience section, 79 (2). 137-145 doi:10.1016/0168-9622(89)90016-x | Journal (article/letter/editorial) | | kimberlites: Examples from the Wesselton and De Beers mines, South Africa, and Somerset Island, Canada C.B. SMITHâ...American Research Laboratories, Crown Mines 2025 (South Africa) 3Department of Geology, University of Zimbabwe...0001 (South Africa) âAnglo American Corporation, Johannesburg 2000 (South Africa) 2050 (South Africa)...kimberlites: Examples from the Wesselton and De Beers mines, South Africa, and Somerset Island, Canada. Chem....previously reported U-Pb perovskite method of dating kimberlite has been substantially improved by obtaining |  | | Journal (article/letter/editorial) | | t e / o r e g e o r ev Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field...Hole Wells, Somerset, BA5 1DN, United Kingdom De Beers Group Services (Pty) Limited, Mineral Resource... 2135, South Africa c De Beers Group Services, PO Box 47, Kimberley, South Africa d De Beers Canada Inc...Available online 22 April 2008 Keywords: Diamond Kimberlite Diatreme Pipe Dyke Mantle-xenolith Diamond-inclusion...deposits in central South Africa in the mid nineteenth century, it was at Kimberley where the volcanic |  | | Book | | D) World Production E) South African Diamond Occurrences 1. Large Kimberlite Mines 1.1 Venetia 1.2 Premier...Finsch 1.4 Kimberley 1.5 Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks...relative production contributions in South Africa were, primary (kimberlite) 8.63 million carats (89% of total)...suggest approximately 40% for the Kimberley mines and 55% for Premier mine. The proportion of gems in the...deposits is over 98%. The MIBA mine in the Congo and the Argyle mine in Australia have an average gem |  | | Journal (article/letter/editorial) | | mines: from artefacts to Lesedi La Rona Michiel C. J. de Wit1,2 Received: 5 November 2017 / Accepted: 30 January...A joint initiative between Anglo American and De Beers started serious prospecting parts of eastern Bechuanaland...were reworked and dropped the exploration rights. De Beers believed that these diamonds had come from west...ultimately led to the discovery of the Orapa kimberlite field in 1967, a year after Botswana became independent...the Editorial handling: T. Stachel * Michiel C. J. de Wit dewit@icon.co.za 1 Tsodilo Resources Ltd., P |  | | Book | | more identified with diamonds than the South African-based De Beers, the operators of the infamous diamond...worldâs rough diamonds flowed into De Beersâs hands. A strike in Northern Canada could hardly seem to trouble...prospectors and, above all, of the shadowy hand of De diamonds Beers for whom are forever. ÂŁ15.99 GBP county...their office in Patos de Minas, eighty miles west of the garimpo on the Abaete. Patos de Minas is a city of...based in Coromandel, eighty miles west of Patos de Minas. The call to Giglio also brought in Stephen |  | | Book (volume) | | ALPHEUS F. WILLIAMS, B.Sc. GENERAL MANAGER OF DE BEERS CONSOLIDATED J\llNES1 LIMITED VOL. I. I ERNEST...rise and development of the diamond mines of South Africa, from an historical, economic and technical...an historical account of the development of the De Beers group of diamond mines, together with an account...days on the diamond fields when the mines in the Kimberley and Jagersfontein areas were the only diamond...the origin of the kimberlite pipes and fissures and the genesis of the kimberlite contained in them. |  | | Book | | stationery while vacationing on the Natal Coast of South Africa. Wilson uses it as a symbol of the Ivory Coast...ETERNITY A diamond is rarely found embedded in kimberlite rock. This picture at right suggests a genetic...assistance ol John Roux, Diamond Information Oflieer of De Beers Consolidated Mines. Roux recommended Arthur Wilson...blood, my father (a distinguished editor ol the Cape Times) having been one ol lour sons ol a sullragan...the Ancient Past . 357 Part IV: The Magic of Kimberlite . 379 Part V: Genesis. 413 Index . 449 i\ |  | | Book | | AFRICA IN WORLD HISTORY STONES OF CONTENTION A History of Africaâs Diamonds Todd Cleveland Stones... Stones of Contention V Africa in World History SERIES EDITORS: DAVID ROBINSON AND JOSEPH C. MILLER James...Ambler Mass Media and Popular Culture in Modern Africa Stones of Contention A History of Africaâs Diamonds...Africaâs diamonds / Todd Cleveland. pages cm. â (Africa in world history) Includes bibliographical references...Diamond mines and miningâAfricaâHistory. 2. Diamond industry and tradeâ AfricaâHistory. 3. Diamond industry |  | | Journal (article/letter/editorial) | | sequence and magma evolution of the De Beers dyke (Kimberley, South Africa) Ashton Soltys 1 & Andrea Giuliani...the De Beers dyke, a contemporaneous, composite intrusion bordering the De Beers pipe (Kimberley, South...South Africa). Petrographic features and mineral compositions indicate the following stages in the evolution...dyke: (1) production of antecrystic material by kimberlite-related metasomatism in the mantle (i.e., high...mineral compositions of different units within the De Beers dyke are indistinguishable from one another, indicating |  | Giuliani, Andrea, Soltys, Ashton, Phillips, David, Kamenetsky, Vadim S., Maas, Roland, Goemann, Karsten, Woodhead, Jon D., Drysdale, Russell N., Griffin, William L. (2017) The final stages of kimberlite petrogenesis: Petrography, mineral chemistry, melt inclusions and Sr-C-O isotope geochemistry of the Bultfontein kimberlite (Kimberley, South Africa) Chemical Geology, 455. 342-356 doi:10.1016/j.chemgeo.2016.10.011 | Journal (article/letter/editorial) | | The final stages of kimberlite petrogenesis: Petrography, mineral chemistry, melt inclusions...geochemistry of the Bultfontein kimberlite (Kimberley, South Africa) Andrea Giuliani, Ashton Soltys,...Russell, GriïŹn, William L., The ïŹnal stages of kimberlite petrogenesis: Petrography, mineral chemistry...geochemistry of the Bultfontein kimberlite (Kimberley, South Africa), Chemical Geology (2016), doi:10...pertain. ACCEPTED MANUSCRIPT The final stages of kimberlite petrogenesis: petrography, mineral chemistry |  | | Journal (article/letter/editorial) | | PO Box 524, Auckland Park 2006 Johannesburg, South Africa brucec@uj.ac.za Downloaded by [University of...was general manager of De Beers Consolidated Mines, Ltd. in Kimberley, South Africa, from 1905 to 1931....discovered the mineral at the Dutoitspan diamond mine in Kimberley in 1923 and, recognizing that it appeared...mineral was found in a dolerite xenolith in the kimberlite, associated with calcite, apophyllite, and natrolite...between the 150-meter and 250-meter levels at the mine. The mineral is brittle, with a hardness of 3â4 |  | | Journal (article/letter/editorial) | | thermobarometry of inclusions from De Beers Pool diamonds, Kimberley, South Africa D. Phillips a,*, J.W. Harris...GeoScience Centre, De Beers Consolidated Mines Ltd., P.O. Box 82232, Southdale, 2135, South Africa b Received...and historically important De Beers Pool kimberlites in Kimberley, South Africa, are characterised by harzburgitic...from eclogitic and websteritic parageneses. The De Beers Pool diamonds contain unusually high numbers of...clinopyroxene + rutile. The mineral chemistry of the De Beers Pool inclusions overlaps that of most worldwide |  | | Book | | ancient India to Venice, Antwerp, Diamantina, and Kimberley. The second section, THE ROUGH DIAMOND AND ITS...on-the-spot reporting, it explores the mines of South Africa and India, Zaire and Brazil, Sierra Leone and...photographs: Michel Plassart (front); Guy Philippart de Foy (back). itiay a Ce Diamonds myth, magic... Honorary President, Chambre syndicale francaise de la Bijouterie, Joaillerie, OrfĂ©vrerie, Paris Head...Department of Geological Mining, Bureau de Recherches gĂ©ologiques et miniĂ©res de France (BRGM), OrlĂ©ans Eduard |  | | Journal (article/letter/editorial) | | 3b7S02.W;O Ultramafic nodules from the Kimberley pipes, South Africa F. R. BOYD Geophysical Laboratory, Carnegie...from the Kimberley pipes differ from suites collected in a number of other areas in southern Africa in two...low-temperature (< 1100°C) peridotites from the Kimberley pipes have textures ranging from coarse to fluidal...mosaic-porphyroclastic. In most nodule suites from southern Africa and elsewhere in the world, these low-temperature...Petrographic and electron microprobe study of the Kimberley peridotites shows that they are depleted in basaltic |  | | Book (volume) | | rmf ' j^lr ^1 THE DIAMOND MINES OF SOUTH AFRICA VOL. II Digitized by the Internet Archive...DIAMOND MINES OF SOUTH AFRICA BY GARDNER F. WILLIAMS, M.A. GENERAL MANAGER OF DE BEERS CONSOLIDATED...Storing and Handling of Dynamite. The Fire in De Beers Mine, iith July, 1888. The Occurrence of âMud Rushes...Churches in the Compounds. The Mining Towns Kimberley : its ........ Public Buildings, Streets,...torium. School of Mines. worth in XVI. : De Beers Many An Village. Drawbacks. Formation of |  | | Journal (article/letter/editorial) | | PERIDOTITE NOTE ON THE OF KIMBERLEY, VICTOR DIAMOND-BEARING SOUTH AFRICA. HARTOG. WITa x BmLIOORAâą'aŸ...first calledon to assumethe dutiesof surveyorat the De Beersmine in SouthAfrica the writer of this paperfelt...examination. During a stay of threeyears,however,at the mine, from a careful comparisonof publisheddescriptions...study could not have been extended to all of the South African pipes but it is believedthat the presentdescriptionwill...north, south, east, west and center of certain working levelsin the De BeersMine, Kimberley, South Africa |  | | Book | | cities from Bangkok to Rio de Janeiro. In a market dominated by the famous De Beers organization interests...country that is lig âs & | likely to replace South Africa as the worldâs champion diamond producer by...Genesis of a Diamond Mine 41 45 4 South Africa y to the The view from Kimberley â Premier: journe were...14 Lovers TRIGGERING THE MYSTIC SIGNAL _ LA CREME DE LA CREME â NO FLAWS INTHE BRIDE _ UNCHARTED WATERS...since I investigated illicit diamond buying in West Africa for Life magazine. And I enjoyed my first real |  | | Book (volume) | | Sparks Editors Proceedings of 10th International Kimberlite Conference Volume 2 Dedicated to Barbara Scott...Scott Smith Proceedings of 10th International Kimberlite Conference D. Graham Pearson âą Herman S. GruÌtter...Sparks Editors Proceedings of 10th International Kimberlite Conference Volume 2 Special Issue of the Journal...Photograph The 10th International Kimberlite Conference International Kimberlite Conferences (IKCs) are special...we live on. The previous conferences were held at Cape Town (1973), Santa Fe, New Mexico (1977), Clermont-Ferrand |  | | Journal (article/letter/editorial) | | from 16 intrusions in Lesotho, the Republic of South Africa, and Tanzania have been investigated. The following...use of zircons in order to identify and trace kimberlite intrusives is discussed, as there may be a possible...DAWSON1967b), only a few percent of the total Zr in the kimberlite is present in the form of zircon. Ilmenite, which...carries some 25~/0 of the total zirconium in the kimberlite. The remainder most likely occurs in the garnet...material studied (especially the zircons from the Kimberley mines) was subangular in shape, with one or a |  | WHITE, J. L., SPARKS, R. S. J., BAILEY, K., BARNETT, W. P., FIELD, M., WINDSOR, L. (2012) KIMBERLITE SILLS AND DYKES ASSOCIATED WITH THE WESSELTON KIMBERLITE PIPE, KIMBERLEY, SOUTH AFRICA. South African Journal of Geology, 115 (1) 1-32 doi:10.2113/gssajg.115.1.1 | Journal (article/letter/editorial) | | WINDSOR 1 KIMBERLITE SILLS AND DYKES ASSOCIATED WITH THE WESSELTON KIMBERLITE PIPE, KIMBERLEY, SOUTH AFRICA...seroster99@hotmail.com © 2012 March Geological Society of South Africa ABSTRACT Field relations, petrography and bulk...petrogenesis of a kimberlite sill complex exposed in water tunnels at Wesselton Mine, Kimberley. The sill complex...main Wesselton pipe and contains: 1. aphanitic kimberlite with a carbonatitic groundmass of calcite, perovskite...rocks with little or no olivine; 2. macrocrystic kimberlite containing entrained harzburgite microxenoliths |  | | Journal (article/letter/editorial) | | DIAMONDS AND MANTLE-DERIVED XENOLITHS FROM SOUTHERN AFRICA J.D. KRAMERS I Bernard Price Institute of Geophysical...University of" the Witwatersrand, Johannesburg, 2001 {South Africa/ Received April 6, 1978 Revised version received...Premier Mine (Transvaal), the Finsch Mine (northern Cape Province) and the Kimberley mines (northern Cape...containing these inclusions are xenocrysts in the host kimberlite. Model Pb ages for the sulphide inclusions in...in the diamonds from Finsch and Kimberley are in excess of 2 b.y., although the host kimberlites are Cretaceous |  | | Book | | Christina Lieberman (New York); Patricia Robb (Rio de Janeiro); Ann Wise (Rome). THE AUTHOR THE CONSULTANTS...diamond (left) glints in its dull setting of kimberlite, the volcanic rock in which diamonds are commonly...Baber, first of the Great Moguls, when he invaded northern India from Afghanistan in 1526. "It is so valuable...and a cardinal of the church, Louis Rene Edouard de Rohan, who had fallen out of favor with Marie Antoinette...for the Queen." The woman agreed to accompany the de La Mottes to Versailles, to wear a dress they would |
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