 | | 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...and baddeleyite) and the mesostasis (calcite, dolomite, and serpentine) on emplacement in the upper crust...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) | | 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 (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 |  | | Book | | almost simultaneously, in the year 1902 a diamond mine and a series of clay pits that were to be the basis...young wife that one day he would find a diamond mine and present her with the _ biggest diamond in the...a diamond pipe which became the Premier ‘Mine. In this mine was found the Cullinan Diamond, the biggest...industry which today is of great importance to the South African steel makers. It took thirty four years...name was Thomas Major Cullinan, was born in the Cape Colony in 1862. He was later to move to Johannesburg |  | | 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) | | 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 |  | DE WIT, M.C.J., WARD, J.D., BAMFORD, M.K., ROBERTS, M.J. (2009) THE SIGNIFICANCE OF THE CRETACEOUS DIAMONDIFEROUS GRAVEL DEPOSIT AT MAHURA MUTHLA, NORTHERN CAPE PROVINCE, SOUTH AFRICA. South African Journal of Geology, 112 (2) 89-108 doi:10.2113/gssajg.112.2.89 | Journal (article/letter/editorial) | | M.C.J. DE WIT, J.D. WARD, M.K. BAMFORD AND M.J. ROBER TS 89 THE SIGNIFICANCE OF THE CRETACEOUS DIAMONDIFEROUS...GRAVEL DEPOSIT AT MAHURA MUTHLA, NORTHERN CAPE PROVINCE, SOUTH AFRICA M.C.J. DE WIT Department of Geology,...0002, South Africa e-mail: deWit@icon.co.za J.D. WARD 17 Buitekring, Stellenbosch, South Africa e-mail:...Johannesburg, WITS 2050, South Africa e-mail: marion.bamford@wits.ac.za M.J. ROBERTS De Beers Group Exploration...Johannesburg, South Africa e-mail: mike.roberts@debeersgroup.com © 2009 June Geological Society of South Africa |  | | 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...Although most groundmass carbonate is calcite, dolomite has also been identified (Fig. 1b). Large (>500...colour (e.g., Jagersfontein kimberlite). Groundmass dolomite replacing earlier groundmass carbonate shows bright |  | | 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 |  | | 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 | | 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.......................... 437 KIMBERLITES Ex Africa semper aliquid novi. Pliny The Elder, Natural...confluence of the Vaal, Orange, and Riet Rivers of South Africa in 1866-1867. The ebb and flow of prospecting |  | | Book (volume) | | ALPHEUS F. WILLIAMS, B.Sc. GENERAL JIIANAGER OF DE BEERS CONSOLIDATED MINES, LIMITED VOL. II. I 9 3 2...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 |  | 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 |  | 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) | | MIKE C.J. DE WIT Early Permian diamond-bearing proximal eskers in the Lichtenburg/Ventersdorp area of...of the North West Province, South Africa Mike C.J. de Wit University of Pretoria/Tsodilo Resources Ltd...7195, South Africa e-mail: dewit@icon.co.za © 2016 December Geological Society of South Africa Abstract...the North West Province are associated with north-south orientated sinuous 'runs' that occur almost entirely...at some 1,500 m elevation. East to west, this dolomite plain measures 150 km, and northsouth it is on |  | | Book | | liMITED 70 Bond Street Toronto z MACMILLAN SOUTH AFRICA (PUBLISHERS) PTY LIMITED P.O. Box z3134 Joubert...NY 10010 By the same author THE VALLEY OF GOLD SOUTH AFRICA'S HALL OF FAME THB GOLD MINERS THB DYNAMITE...Goldenjubilee Move to the Country The First New Mine Aftermath ofWar The Master Plan The Big Bid 175...The young diamond diggers facing page 38 The Kimberley coach 39 Lobengula, paramount chief of the Matabele...original prospectus issued by The Gold Fields of South Africa Ltd. in 1887 45 Charles Dune11 Rudd 54 The first |  | (1897) I.—Papers and Notes on the Genesis and Matrix of the Diamond. By the late Henry Carvill Lewis, M.A., F.G.S., etc. Edited from his unpublished MSS. by ProfessorT. G. Bonnet, D.Sc, F.R.S., etc. Large 8vo; pp., including index, 72. Two plates and illustrations, chiefly of minerals, in the text. (London: Longmans, 1897.) Geological Magazine, S. 4 Vol. 4 (8) 366-371 doi:10.1017/s0016756800184171 | Journal (article/letter/editorial) | | phenomena presented by the diamond-mines round Kimberley. This work was in a great measure based upon specimens...Colonial Exhibition in South Kensington as long ago as 1886, when the De Beers mine had perhaps a depth...diamond-mines of South Africa. The history of a rock somewhat similar to that prevailing in the Kimberley pipes...(or serpentine) with the diamond at least in South Africa, and also in Kentucky. Our readers will easily...which such a subject as the diamond-rock of South Africa would have for a man of Professor Lewis' stamp |  | | 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...to thank the following: Mr. M.C.J. de Wit, chief geologist, De Beers Consolidated Mines, Ltd., for his...Anglo-Aaerican Mines Ltd., Corporation of South Africa and De Beers Consolidated for the provision of a...the C.S.I.R. for a post-graduate bursary. The De Beers Geology laboratory in Kiaberley for the sorting |  | | Journal (article/letter/editorial) | | Sciences, Macquarie University, North Ryde, 2109, New South Wales, Australia 3 Centre for Microscopy, Characterisation...Eocene archetypal kimberlites from southern Africa, Lac de Gras (Canada) and Alto Paranaiba (Brazil),...in the source of kimberlites from southern Africa, Lac de Gras and Alto Paranaiba, or that the recycled...kimberlites and related megacrysts from southern Africa revealed elevated 206 Pb/204Pb ratios (Smith...observation and argument applies to kimberlites from Lac de Gras (Canada) of Cretaceous to Eocene age (Tappe |  | | Report (chapter) | | KOTA2 1 De Beers Group Exploration, 77 Crownwood Road, Theta Extension 4, Johannesburg, 2013, South Africa...Africa 2 De Beers India Exploration, 36/A, Peenya Industrial Area, IInd Phase, Bangalore 560058, India *Corresponding...erosion of kimberlites of the Wajrakurur cluster. De Beers’ India’s exploration efforts have resulted in...known near Banganapalle village in the Kurnool district, Andhra Pradesh, India (Fig. 1). The Banganapalle...Cumbum/Pullampet Shale (2000m) Slate, phyllite, chert, dolomite Bairenkonda/Nagari Quartzite (1500– Quartzite |  | | 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...EXPLORATION AND MIGRATION 2 EARLY DAYS AT THE CAPE 3 THE EASTERN FRONTIER . 1 35 69 99 4 THE...xvn Aerial view of Cape Town 12 A Portuguese map based on Ptolemy's outline of Africa 13 Portuguese caravel |  | | Journal (issue) | | Mining of Diamonds Off the West Coast of Southern Africa John 1. Gurney, Alfred A. Levinson, and H . Stuart...Stuart Smith Sunstone Labradorite from the Ponderosa Mine, Oregon Christopher L. Johnston, Mickey E. Gunter...been identified off the western coast of southern Africa. The lead article in this issue examines the probable...diamonds exists off the west coast of southern Africa. Over the course of millions of years, many diamond-bearing...Gsocftemsfry, Universityof c47e Town, flOrtdabOSCh, Soufft Africa. and ateo Chairman ofBenguela ConcessionsPm).~ |  | | Journal (article/letter/editorial) | | VICTORIA, DIED 22ND JANUARY 1901. A FORMER ICE AGE IN SOUTH AFEICA. MANY years 'ago Sir Andrew Ramsay startled...characterised the close of Palaeozoic times. Alike in South Africa, in Central India, and in Australia, geologists...the former occurrence of an Ice Age in Southern Africa—although it must be admitted that the evidence...But during the past thirty years geologists in South Africa • have not been idle, and the result of their...supervene. I n the Report of the Geological Survey of Cape Colony for 1899, we have much additional evidence |  | Kjarsgaard, B.A., Pearson, D.G., Tappe, S., Nowell, G.M., Dowall, D.P. (2009) Geochemistry of hypabyssal kimberlites from Lac de Gras, Canada: Comparisons to a global database and applications to the parent magma problem. Lithos, 112. 236-248 doi:10.1016/j.lithos.2009.06.001 | Journal (article/letter/editorial) | | Geochemistry of hypabyssal kimberlites from Lac de Gras, Canada: Comparisons to a global database and...Canada K1A 0E8 Earth Sciences, Durham University, South Road, Durham, DH1 3LE, United Kingdom Earth and...geochemical analyses of hypabyssal kimberlite from the Lac de Gras field. Screens using Yb versus Al2O3 and ln Si/Al...contents of peridotite contamination. We utilize the Lac de Gras data suite to calculate, by two different methods...geochemically distinct parent magma types. The Lac de Gras parent magma compositions are compared to those |  | | Journal (article/letter/editorial) | | Phlogopite Zoning Magma ascent Mantle xenoliths Kimberley a b s t r a c t Kimberlite magmas are of economic...phlogopite from the Bultfontein kimberlite (Kimberley, South Africa; i.e. the kimberlite type-locality) and...grains in the Bultfontein kimberlite (Kimberley, South Africa (Fig. 1); i.e. the kimberlite type-locality)...crystals in mantle xenoliths entrained by the Kimberley kimberlites. Phlogopite grains in the Bultfontein...(Giuliani et al., 2014a). 1.1. Phlogopite in the Kimberley kimberlites and entrained mantle xenoliths Limited |
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