 | | 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...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...deposits were discovered in South Africa and Botswana in particular, but also in Lesotho, Swaziland and Zimbabwe |  | | Book (edition) | | iMi THE DIAMOND MINES OF SOUTH AFRICA SOME ACCOUNT OF THEIR AND DEVELOPMENT RISE BY GARDNER F. ...The Rush The to 87 114 . the Vaal 140 Kimberley 164 Camps Great White Opening 32 . the...267 The 297 Essential Combination Systematic Mining 307 Winning 360 the Diamonds XIII. "^Obstacles...XIV. XV. XVI. The Workers in the Mines The Mining Towns 407 450 . Formation of the Diamond 479...Statistics of De Beers Main for Shaft, Kimberley Mine Kimberley Mine Company . 605 667 669 670 671 |  | | 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 |  | | Journal (article/letter/editorial) | | magma evolution of the De Beers dyke (Kimberley, South Africa) Ashton Soltys 1 & Andrea Giuliani 1,2...intrusion bordering the De Beers pipe (Kimberley, South Africa). Petrographic features and mineral compositions...(internal zones and subsequently rims), Cr-rich spinel, rutile, and magnesian ilmenite, probably on ascent to...intrusions of the main Kimberley pipes (i.e., Wesselton, De Beers, Bultfontein). However, the composition...distinct from those in ‘evolved’ intrusions of the Kimberley cluster (e.g., Benfontein, Wesselton water tunnel |  | | Journal (article/letter/editorial) | | something about the geology, cultural contexts and mining histories of the localities represented. The crystal...collection, a brief historical overview of diamond mining and a summary of the exotic geological “story”...dynasty (320–298 B.C.) who regulated an active local diamond trade (Maillard, 1980). Legends associated... Figure 4. A diamond crystal in “blue ground” from South Africa, probably from the collection of Gardner and...account of about 120 B.C. speaks tantalizingly of underground diamond mines with deep galleries (Maillard, |  | | Book | | not attempted to describe diamond prospecting and mining and, although I have attempted to give some of...with whose research groups at the universities of Cape Town and Chicago I have had long and fruitful collaboration...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. . . . . . . . . . |  | | Book (volume) | | rise and development of the diamond mines of South Africa, from an historical, economic and technical...days on the diamond fields when the mines in the Kimberley and Jagersfontein areas were the only diamond...information of a mining nature, which included, besides the data on under ground and surface mining operations...crystals with the object, if possible, of deter mining the conditions under which the diamond crystal...collect during my many visits to all parts of South Africa where kimberlite deposits occurred and the filing |  | | 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 |  | | 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...Office. . . .24 . The Dangers of Old Methods of Mining. Fire Damp in the Shales. The Storing and Handling...Handling of Dynamite. The Fire in De Beers Mine, iith July, 1888. The Occurrence of “Mud Rushes.” The Workers...Schools and Churches in the Compounds. The Mining Towns Kimberley : its ........ Public Buildings, Streets |  | | 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...very similar and are comparable to ilmenite and rutile. R1 and R2 in air and oil, respectively, for lindsleyiteare:...Presentaddress: Stockdale Prospectint-Ltd., 60 Wiison Street, South yarra, Victoria 3141,Australia. 0003-004x/83/0505-M94$02...c minerals are K-richterite, phlogopite, Nb-Cr-rutile and Nb-CrMg-ilmenite,togetherwith olivine, orthopyroxene |  | | Journal (article/letter/editorial) | | Abstract Kimberlite magmas from the Kimberley area of South Africa have sampled two main types of phlogopite-rich...association mica (phlogopite)–amphibole (K-richterite)–rutile–ilmenite–clinopyroxene and the second group consists...mica (phlogopite)–ilmenite– clinopyroxene–minor rutile. The two groups are clearly distinguished from...and metasomatised, the upper mantle beneath the Kimberley area as indicated by the trace element characteristics...Geological Sciences, University of Cape Town, 7700 Rondebosch, South Africa Editorial responsibility: T.L |  | | Journal (article/letter/editorial) | | Phlogopite Zoning Magma ascent Mantle xenoliths Kimberley a b s t r a c t Kimberlite magmas are of economic...data for phlogopite from the Bultfontein kimberlite (Kimberley, South Africa; i.e. the kimberlite type-locality)...microcrysts (between ~0.1 and 0.3 mm) in the Bultfontein kimberlite display concentric compositional zoning...and groundmass grains in the Bultfontein kimberlite (Kimberley, South Africa (Fig. 1); i.e. the kimberlite...xenoliths entrained by the Kimberley kimberlites. Phlogopite grains in the Bultfontein kimberlite exhibit multiple |  | 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) | | isotope geochemistry of the Bultfontein kimberlite (Kimberley, South Africa) Andrea Giuliani, Ashton Soltys...isotope geochemistry of the Bultfontein kimberlite (Kimberley, South Africa), Chemical Geology (2016),...geochemistry of the SC RI PT Bultfontein kimberlite (Kimberley, South Africa) Andrea Giuliani1,2,3*, Ashton...hypabyssal sample (BK) from the Bultfontein kimberlite (Kimberley, South MA Africa). Sample BK consists of...Sr/86Sr ratios to perovskite in the Bultfontein and the other Kimberley kimberlites, i.e. magmatic values |  | | Journal (article/letter/editorial) | | of Geochemistry, University of Cape Town, Rondebosch 7700 (South Africa) Received February 20, 1985; revised...mantle beneath the northern Lesotho margin of the Archaean craton in southern Africa are inferred to have...garnet lherzolite xenoliths from beneath the Kimberley area in the craton interior display internal isotopic...similar Cretaceous age, Bultfontein (Kimberley district) and Thaba Putsoa (northern Lesotho), was undertaken...orthopyroxene compositions indicate haba Putsoa Bultfontein (Kimberley cluster) 0 i . . . . 500 i km Fig |  | | Journal (article/letter/editorial) | | SPINEL MACROCRYSTS FROM KIMBERLITES IN SOUTHERN AFRICA DANIEL J. SCHULZE§ Department of Geology, University...single-crystal macrocrysts in kimberlites from southern Africa (approximately 1500 grains from 20 kimberlites...from a variety of mantle xenoliths from southern Africa and North America (approximately 150 xenoliths)...Unusually Fe- and Ni-rich macrocrysts unique to the Lace mine are from Fe-rich orthopyroxene-bearing peridotites...kimberlite, chromian spinel, magnesiochromite, southern Africa. SOMMAIRE Je présente ici une comparaison, en |  | | Journal (article/letter/editorial) | | in polymict xenoliths from the Bultfontein kimberlites, South Africa: implication for low bulk-rock oxygen...Polymict mantle xenoliths from the Bultfontein kimberlites, South Africa, contain abundant ilmenites (30%...of Geochemistry, University of Cape Town, Rondebosch 7700, South Africa Editorial responsibility: T.L...homogeneous high-Ti silicate melt. Keywords South Africa á Polymict xenolith á Oxide mineral á Ilmenite...analyses of oxide minerals (e.g. spinel, ilmenite and rutile) overgrown with silicate minerals in kimberlite |  | | Book | | Soc., Brit. Assoc., Inst. Soc. Soc. Psych. Hon. Cape Sc.D. of Good Elect. Eng., Hon. Mem. Roy. Phil... Pharm. Soc., Chem. Metall. and Mining Soc. of South Africa, Amer. Chem. Soc., Amer. Philos. Soc...Consolidated Beers their quest In on and Kimberley, at F. Williams, when Mr. Gardner Manager ... month per- on two during observations Kimberley, based are pages and had me to to take...members were Association which held its in South Africa. the it Association natural was Diamonds |  | | Journal (article/letter/editorial) | | lherzolites resemble the less deformed varieties in the Kimberley pipes both in texture and in mineral chemistry...temperaturc" lherzolites in other pipes in southern Africa in that none contain coarse phlogopite. Application...those for megacrysts from northern Lesotho and the Monastery Mine, South Africa. Both the diopside solvus...Eclogites are predominantly bimineralic with accessory rutile, but the suite includes individual specimens of...Laboratories, Crown Mines, Transvaal, Republic of South Africa 528 Lherzolites, eclogites, & megacrysts |  | | Journal (article/letter/editorial) | | of some peridotites from the Kaapvaal craton (South Africa) Received: 27 October 2005 / Accepted: 15 January...immiscible sulphide melts in phlogopite-(ilmenite–rutile) peridotites and (2) sulphidation reactions from...in peridotite xenoliths from Kaapvaal craton (South Africa) provided compelling evidence for the occurrence...high-grade Archean Terranes: the Western Terrane, the South-Eastern Terrane, the Central Terrane and the Pietermaritz...kimberlite pipes of the Kimberley area (De Beers Mine; Bultfontein, Kimberley, South Africa) and Jagersfontein |  | | Journal (article/letter/editorial) | | inclusions from De Beers Pool diamonds, Kimberley, South Africa D. Phillips a,*, J.W. Harris b, K.S. Viljoen...Mines Ltd., P.O. Box 82232, Southdale, 2135, South Africa b Received 27 June 2003; accepted 14 December...important De Beers Pool kimberlites in Kimberley, South Africa, are characterised by harzburgitic compositions...assemblage comprising garnet + clinopyroxene + rutile. The mineral chemistry of the De Beers Pool inclusions...Beers Pool kimberlites in Kimberley, South Africa (28j46VS, 24j48VE). The Kimberley region is significant |  | | Journal (article/letter/editorial) | | lamproite Frances G. Waters Department of Geochemistry, University of Cape Town, Rondebosch, Cape 7700,... South Africa Abstract. Chemical, mineralogical and isotopic studies have been made on nodules of the...characteristic mineralogy, i.e., Mica-Amphibole-Rutile-lhneniteDiopside. The present study is based on...which are mostly from Bultfontein, with some from other pipes of the Kimberley cluster, and two from...from Newlands, ~ 60 km north-west of Kimberley. Olivine is absent from MARID rocks and enstatite is only |  | | Report (chapter) | | minerals are commonly altered 1 In the case of S Africa, the micaceous by deuteric processes, mainly serpentinisation...by other high-K minor intrusives, as at the Helam Mine in the Swartruggens area of the western Transvaal...the micaceous and non-micaceous kimberlites in S Africa has recently been recognized on isotopic grounds...versus Nd isotope plot (Fig. 1) on which the Helam Mine lamprophyre dyke, referred to above, falls close...kimberlites. In summary the term 'kimberlite' in S Africa has been used to cover rocks that are distinct |  | Fitzpayne, Angus, Giuliani, Andrea, Hergt, Janet, Phillips, David, Janney, Philip (2018) New geochemical constraints on the origins of MARID and PIC rocks: Implications for mantle metasomatism and mantle-derived potassic magmatism. Lithos, 318. 478-493 doi:10.1016/j.lithos.2018.08.036 | Journal (article/letter/editorial) | | Ryde, 2109 New South Wales, Australia Department of Geological Sciences, University of Cape Town, Rondebosch...Rondebosch 7701, South MA 3 AC CE Corresponding author. PT E * D Africa ACCEPTED MANUSCRIPT Abstract...Abstract MARID (Mica-Amphibole-Rutile-Ilmenite-Diopside) and PIC (Phlogopite-IlmeniteClinopyroxene) rocks...MARID and PIC samples from the Kimberley- D Barkly West area in South Africa. Similarities between compositions...MANUSCRIPT 1. Introduction MARID (Mica-Amphibole-Rutile-Ilmenite-Diopside) rocks are coarse-grained, ultramafic |  | Giuliani, A., Kamenetsky, V.S., Kendrick, M.A., Phillips, D., Wyatt, B.A., Maas, R. (2013) Oxide, sulphide and carbonate minerals in a mantle polymict breccia: Metasomatism by proto-kimberlite magmas, and relationship to the kimberlite megacrystic suite. Chemical Geology, 353. 4-18 doi:10.1016/j.chemgeo.2012.09.025 | Journal (article/letter/editorial) | | and rock clasts, cemented together by ilmenite, rutile, phlogopite, olivine and minor sulphides. These...polymict breccia (DU-1) from the Bultfontein Dumps (Kimberley, South Africa). Xenolith DU-1 contains heterogeneous...minor rutile. The ilmenite has Hf isotope values (initial εHf =2.1–3.0) in the range of South African...cemented together by variable amounts of ilmenite, rutile, phlogopite, olivine and sulphides (Lawless et...xenolith (DU-1) collected from the Bultfontein Dumps (Kimberley, South Africa). Textural relationships, mineral |  | Hopp, Jens, Trieloff, M., Brey, G.P., Woodland, A.B., Simon, N.S.C., Wijbrans, J.R., Siebel, W., Reitter, E. (2008) 40Ar/39Ar-ages of phlogopite in mantle xenoliths from South African kimberlites: Evidence for metasomatic mantle impregnation during the Kibaran orogenic cycle. Lithos, 106 (3) 351-364 doi:10.1016/j.lithos.2008.09.001 | Journal (article/letter/editorial) | | Ar/39Ar-ages of phlogopite in mantle xenoliths from South African kimberlites: Evidence for metasomatic mantle...lithosphere Ar–Ar dating Metasomatism Southern Africa a b s t r a c t We applied the 40Ar/39Ar dating...(dominantly garnet bearing) from the mines of Bultfontein (South Africa), Letseng-laTerae and Liqhobong (Lesotho)...meaningful and assigned to metasomatism of the local cratonic mantle during the advent of Kibaran orogenesis...The cratonic lithospheric mantle below southern Africa may have been frequently influenced by different |
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