 | | 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...olivine rinds, Fe-Ti-rich spinels, perovskite, apatite, monticellite, calcite micro-phenocrysts, kino...mineral compositions of different units within the De Beers dyke are indistinguishable from one another, indicating |  | | Journal (article/letter/editorial) | | Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field a,⁎, Johann Stiefenhofer...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...deposits in central South Africa in the mid nineteenth century, it was at Kimberley where the volcanic...industrial development of southern Africa. Following the discoveries at Kimberley, even more valuable deposits |  | | 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...collect during my many visits to all parts of South Africa where kimberlite deposits occurred and the filing |  | 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) | | geochemistry of the Bultfontein kimberlite (Kimberley, South Africa) Andrea Giuliani, Ashton Soltys, David...geochemistry of the Bultfontein kimberlite (Kimberley, South Africa), Chemical Geology (2016), doi:10.1016/j...the SC RI PT Bultfontein kimberlite (Kimberley, South Africa) Andrea Giuliani1,2,3*, Ashton Soltys1...Ryde, Department of Earth Sciences, VU Amsterdam, De Boelelaan 1085, 1081 HV CE 3 PT 2019 NSW, Australia...(BK) from the Bultfontein kimberlite (Kimberley, South MA Africa). Sample BK consists of abundant macrocrysts |  | | Book | | Phase 5. Sample Treatment D) World Production E) South African Diamond Occurrences 1. Large Kimberlite...Finsch 1.4 Kimberley 1.5 Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks... their relative production contributions in South Africa were, primary (kimberlite) 8.63 million carats...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) | | [Northeastern University] at 11:35 25 October 2014 D Two South Africans Hans Merensky and Cecil John Rhodes P...first new mineral species to be described from South Africa. It was named after Col. Hendrik von Prehn (1733-85)...(1733-85), a Dutch colonial living in Cape Town who collected the first specimens and brought them to...Europe in 1774. Seventy years elapsed before South Africa produced another species-teschemacherite, described...Further new mineral descriptions had to wait until South Africa’s modern mining industry was established |  | 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) | | ASSOCIATED WITH THE WESSELTON KIMBERLITE PIPE, KIMBERLEY, SOUTH AFRICA J.L. WHITE, R.S.J. SPARKS, K. BAILEY Department...seroster99@hotmail.com © 2012 March Geological Society of South Africa ABSTRACT Field relations, petrography and bulk...complex exposed in water tunnels at Wesselton Mine, Kimberley. The sill complex, together with associated...Serpentinisation has pseudomorphed olivine, replaced calcite, apatite and phlogopite in the groundmass and thereby changed...associated with the Wesselton kimberlite pipe, Kimberley, South Africa. This study investigates their intrusion |  | | Journal (article/letter/editorial) | | PERIDOTITE NOTE ON THE OF KIMBERLEY, VICTOR DIAMOND-BEARING SOUTH AFRICA. HARTOG. WITa x BmLIOORA•'a¾...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 |  | Lim, Emilie, Giuliani, Andrea, Phillips, David, Goemann, Karsten (2018) Origin of complex zoning in olivine from diverse, diamondiferous kimberlites and tectonic settings: Ekati (Canada), Alto Paranaiba (Brazil) and Kaalvallei (South Africa) Mineralogy and Petrology, 112. 539-554 doi:10.1007/s00710-018-0607-6 | Journal (article/letter/editorial) | | (Canada), Alto Paranaiba (Brazil) and Kaalvallei (South Africa) Emilie Lim 1 & Andrea Giuliani 1,2 & David... Tres Ranchos-04), and the Kaapvaal craton, South Africa (Kaalvallei: Samada, New Robinson). Olivine...localities: Grizzly and Koala (Ekati property), Lac de Gras, Canada; Limpeza-18 and Tres Ranchos-04, Alto...Samada and New Robinson (Kaalvallei cluster), South Africa (Fig. 1). This is the first detailed study of...Grizzly and Koala kimberlites are located in the Lac de Gras kimberlite field of the Slave craton, Canada |  | | Journal (issue) | | to De Beers’ values and its clear purpose to ‘Make Life Brilliant’, Moses Madondo, MD at De Beers Group...FEATURE P12 THE TOP 3 mining jurisdictions in Africa in 2022 011 949 1157 sales@astafrica.com www...EDITOR’S STANDOUT DEVELOPMENT PROJECTS MINING REVIEW AFRICA | ISSUE 2 – 2022 PROVIDING THE EDGE IN TOUGH TIMES...to De Beers’ values and its clear purpose to ‘Make Life Brilliant’, Moses Madondo, MD at De Beers Group...FEATURE P12 THE TOP 3 mining jurisdictions in Africa in 2022 FRONT COVER The economy, efficiency and |  | Ogilvie-Harris, R. C., Field, M., Sparks, R. S. J., Walter, M. J. (2009) Perovskite from the Dutoitspan kimberlite, Kimberley, South Africa: implications for magmatic processes. Mineralogical Magazine, 73 (6) 915-928 doi:10.1180/minmag.2009.073.6.915 | Journal (article/letter/editorial) | | Perovskite from the Dutoitspan kimberlite, Kimberley, South Africa: implications for magmatic processes R...lithofacies from the Dutoitspan pipe, Kimberley, South Africa, which range from diamondiferous to barren...from the Dutoitspan kimberlite pipe, Kimberley District, South Africa. Data on the chemistry of perovskites... PEROVSKITE FROM THE DUTOITSPAN KIMBERLITE, SOUTH AFRICA kite, hypothesizing that Fe will increasingly...kimberlite is located in the Kimberley cluster, (Kimberley District of South Africa). Clement (1982) identified |  | | Journal (article/letter/editorial) | | from 17 kimberlite localities from SC southern Africa, Canada, Greenland and Russia. These data show...kimberlite locality, cluster (e.g., Kimberley) and, potentially field (e.g., Lac de Gras), form a single compositional...compositions of olivine rims in kimberlites from SC Lac de Gras that were emplaced as hypabyssal root-zones...different areas suggest contribution from a range of local processes, such as variable source composition,...filtering PT E 3.3. Canada D 3.2. Southern Africa 3.4. West Greenland CE 3.5. Russia 4. Origin |  | | Book (volume) | | we live on. The previous conferences were held at Cape Town (1973), Santa Fe, New Mexico (1977), Clermont-Ferrand...Araxa, Brazil (1991), Novosibirsk, Russia (1995), Cape Town (1998), Victoria, Canada (2003) and Frankfurt...of Dharwar Craton in South India, (ii) lamproites of Bundelkhand Craton in northern India and (iii) diamond...He obtained a B.Sc. (Hons) from the University of Cape Town in 1986 and a Ph.D. in metamorphic petrology...Glasgow. For over 30 years, he was a consultant to De Beers Consolidated Mines, managing their worldwide outside |  | | Journal (article/letter/editorial) | | within uncertainty to those of vein calcite in the De Beers kimberlite). This complexity emphasises the necessity...and coherent kimberlites from localities in South Africa ( We s s e l to n , D e B e e r s , B u l t...(e.g., Wesselton, Pipe 1, Koala), dykes (e.g., De Beers, Jagersfontein) and carbonate-rich sills (i.e...interstitial to other groundmass phases, such as apatite, perovskite, spinel, monticellite or olivine micro-phenocrysts...laths Laths of calcite occur in the De Beers dyke (South Africa; Soltys et al., this volume). These prismatic |  | | Journal (article/letter/editorial) | | M.C.J. DE WIT 477 The diamondiferous sediments on the farm Nooitgedacht (66), Kimberley South Africa...Africa M.C.J. de Wit De Beers Consolidated Mines Ltd. Africa Exploration. P.O. Box 7383, Centurion 0046, South...South Africa E-mail: mike.dewit@debeersgroup.com © 2004 Geological Society of South Africa ABSTRACT...were mined on the farm Nooitgedacht (66) in the Kimberley area between 1908 and 1930, 1948 and 1981, and...of the biggest alluvial diamond ever found in South Africa, the Venter diamond (511.25cts). The farm can |  | BATUMIKE, J, GRIFFIN, W, BELOUSOVA, E, PEARSON, N, OREILLY, S, SHEE, S (2008) LAM-ICPMS U–Pb dating of kimberlitic perovskite: Eocene–Oligocene kimberlites from the Kundelungu Plateau, D.R. Congo. Earth and Planetary Science Letters, 267 (3) 609-619 doi:10.1016/j.epsl.2007.12.013 | Journal (article/letter/editorial) | | University, NSW 2109, Australia b Université de Lubumbashi, Département de Géologie, B.P. 1825, Lubumbashi, Congo...analysis of perovskites from four previously dated South African Group I kimberlites. Intercepts of regression...component. The ages of Group I kimberlites in Kimberley District cluster around 87 Ma, similar to those determined...kimberlites corresponds to the opening of the northern part of the East African Rift and implies the...series), diopside (Al- and Ti-poor), monticellite, apatite, calcite, ⁎ Corresponding author. ARC National |  | | Book | | Christina Lieberman (New York); Patricia Robb (Rio de Janeiro); Ann Wise (Rome). THE AUTHOR THE CONSULTANTS...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...very grand seigneur" — none other than Cardinal de Rohan, who had been transported by joy when Jeanne |  | | Book | | Project of Energy, Mines, and Resources, Canada; and De Beers Consolidated Mines are acknowledged for financial............................... 126 5.3.3.2. West Africa ........................................... 126...11. 6.12. 6.13. 6.14. 6.15. 6.6.3 .1. Diverse South African Kimberlites (Dawson and Smith 1975, Smith................................................ Apatite ........................................................................ 437 KIMBERLITES Ex Africa semper aliquid novi. Pliny The Elder, Natural |  | Naidoo, P., Stiefenhofer, J., Field, M., Dobbe, R. (2004) Recent advances in the geology of Koffiefontein Mine, Free State Province, South Africa. Lithos, 76 (1) 161-182 doi:10.1016/j.lithos.2004.04.032 | Journal (article/letter/editorial) | | the geology of Koffiefontein Mine, $ Free State Province, South Africa P. Naidoo a,b,*, J. Stiefenhofer...Dobbe c a De Beers Koffiefontein Mine, South Africa De Beers Mineral Resource Management, CHQ, South Africa...Africa c De Beers Geoscience Centre, South Africa d De Beers Central Mines, South Africa e De Beers Mineral...pipe has contributed to the marginal nature of the mine. The key to this is the presence of a large zone...stability and adversely affects the economics of the mine. D 2004 Elsevier B.V. All rights reserved. Keywords: |  | | Report (chapter) | | all of which combine to give a (e.g. calcite and apatite) that are relatively common in hypabyssal-facies...monticellite, There is nonetheless a fundamental division apatite, spinels, perovskite and ilmenite. The within the...minerals are commonly altered 1 In the case of S Africa, the micaceous by deuteric processes, mainly serpentinisation...contain considerable amounts of matrix calcite and apatite. 3 The micaceous kimberlites generally also contain...by other high-K minor intrusives, as at the Helam Mine in the Swartruggens area of the western Transvaal |  | Abersteiner, Adam, Kamenetsky, Vadim S., Goemann, Karsten, Giuliani, Andrea, Howarth, Geoffrey H., Castillo-Oliver, Montgarri, Thompson, Jay, Kamenetsky, Maya, Cherry, Alexander (2019) Composition and emplacement of the Benfontein kimberlite sill complex (Kimberley, South Africa): Textural, petrographic and melt inclusion constraints. Lithos, 324. 297-314 doi:10.1016/j.lithos.2018.11.017 | Journal (article/letter/editorial) | | the Benfontein Kimberlite Sill complex (Kimberley, South Africa): Textural, petrographic and melt inclusion...the Benfontein Kimberlite Sill complex (Kimberley, South Africa): Textural, petrographic and melt inclusion...the Benfontein Kimberlite Sill Complex (Kimberley, South Africa): Textural, petrographic and melt inclusion...Geological Sciences, University of Cape Town, Rondebosch 7701, South Africa 6 Department of Geology, University...emplacement coeval with other kimberlites of the Kimberley SC RI cluster. The Benfontein sills are characterised |  | | Journal (article/letter/editorial) | | com/locate/lithos Kimberlites of the Man craton, West Africa E.M.W. Skinner a,*, D.B. Apter b, C. Morelli b...Rhodes University, Grahamstown 6140, South Africa b DeBeers, South Africa c Mano River Resources, Canada Received...craton in West Africa is an Archaean craton formerly joined to the Guyana craton (South America) that...Introduction The kimberlites of the Man craton West Africa (Fig. 1) include concentrations of kimberlites...similarly aged Group II kimberlites in Southern Africa (Skinner et al., 1992). A hot spot model for these |  | | Journal (article/letter/editorial) | | Department of Geochemistry University of Cape Town, Republic of South Africa arro R. V. DnNcurrq2 Anglo-American...ResearchLaboratory Crown Mines, Johannesburg, Republic of South Africa Abstract Two new opaquemineralsare describedfrom...Presentaddress: Stockdale Prospectint-Ltd., 60 Wiison Street, South yarra, Victoria 3141,Australia. 0003-004x/83/0505-M94$02...Hageerty (1975) from the De Beers kimberlite in the Republic of South Africa (RSA) and the mineral has...heavy mineral concentrates from the Jagersfontein mine, the Kolonkwanen kimberlite, and in one veined peridotite |  | | Book | | Jacques P. Cassedanne Universidade Federal do Rio de Janeiro For his valuable participation in research...Angeles American Museum ofNatural History - New York De Beers Consolidated Mines Naturhistorisches Museum -...the Cruzeiro tourmaline and mica mine and the Jacobina amethyst mine. He owns several other mines as well...Jarge chain of retail stores, centered in the Rio de Janeiro area, but located in other Brazilian cities...Bahia state, and from Rio and Sao Paulo further South, the pioneers made their way to the Jequitinhonha |  | | Journal (issue) | | performed by X-ray fluorescence (EDXRF) using a Tracor Northern TN 5000 system. Results in the chromium- and...Geologyofofthe theYellow Yellow Mine Mine (Taita-Taveta (Taita-TavetaDistrict, District,Kenya) Kenya) and andother...tourmaline tourmaline deposits depositsininEast East Africa Africa C.C. Simonet, M.Sc, DUG (F)(F) Simonet, M.Sc...pegmatite fromthethe John also JohnSaul SaulMine Mine(southern (southernKenya) Kenya)is is alsogiven....in east Africa; this indicates thethe differentkinds kinds geological environments east Africa; this indicates |
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