 | Viljoen, K. S., Swash, P. M., Otter, M. L., Schulze, D. J., Lawless, P. J. (1992) Diamondiferous garnet harzburgites from the Finsch kimberlite, Northern Cape, South Africa. Contributions to Mineralogy and Petrology, 110 (1) 133-138 doi:10.1007/bf00310887 | Journal (article/letter/editorial) | | garnet harzburgites from the Finsch kimberlite, Northern Cape, South Africa K.S. Viljoen 1, ~, P.M. Swash...2025, South Africa 2 Department of Geochemistry, University of Cape Town, Rondebosch, 7700, South Africa...L5L1C6 4 Geology Department, Finsch Mine, Lime Acres, 8140, South Africa 5 Bernard Price Institute for...the Witwatersrand, WITS 2050, Johannesburg, South Africa Received April 26, 1991 / Accepted September...xenoliths of garnet harzburgite from the Finsch kimberlite, South Africa, have been found to contain diamond |  | | Journal (article/letter/editorial) | | Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field a,â, 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) | | 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...for the sulphide inclusions in the diamonds from Finsch and Kimberley are in excess of 2 b.y., although...Roberts Victor Mine (Orange Free State), peridotites from the Matsoku Pipe (Lesotho) and diopside megacrysts |  | | Journal (article/letter/editorial) | | OF DIAMOND BASED ON THERMOBAROMETRY OF CHROMIAN DIOPSIDE INCLUSIONS PAOLO NIMIS§ Dipartimento di Mineralogia...P for over one-hundred inclusions of chromian diopside (mostly isolated) in diamond crystals containing...crystals. The results support the use of chromian diopside thermobarometry as a complementary tool for assessment... Keywords: diamond, thermobarometry, chromian diopside, inclusions, upper mantle. SOMMAIRE JusquâĂ ce...utilisant plus dâune centaine dâinclusions de diopside chromifère (grains isolĂŠs pour la plupart) dans |  | | Book | | E) South African Diamond Occurrences 1. Large Kimberlite Mines 1.1 Venetia 1.2 Premier 1.3 Finsch 1.4...Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks 2.2 The Zebediela Kimberlites 2... their relative production contributions in South Africa were, primary (kimberlite) 8.63 million carats...Premier mine. The proportion of gems in the West Coast marine deposits is over 98%. The MIBA mine in the...the Congo and the Argyle mine in Australia have an average gem content of only 5%. The dispersal of diamonds |  | | Book (volume) | | DIAMONDS OXIDE INCLUSIONS IN DIAMONDS FROM THE FINSCH KIMBERLITE J. J. Gurney, J. W. Harris, PIPE ...ANDWILLIAMSON MINE, TANZANIA H.-M. Tsai, O. A. Meyer, 0. Moreau, and H. Judith Milledge REGIONAL AND LOCAL VARIATIONS...KIFYBERLiTES IN THE COLORADO-WYCâ˘ING STATE mINE DISTRICT 42 M. E. McCal!um, C. D. Mabarak, and H. G... K. J. Stracke, 59 OF KIMBEHLITES H.-M. IN SOUTH-EASteRN AUSTRALIA 71 J. Ferguson, an⢠L. P. Black...CARBONATITEERUPTIVES AT SALTPETRE 111 KOP, SUâ˘}tERLAND, SOU'iH AFRICA J. R. â˘cIver and J. Ferguson Mâ˘NERALOGY AND PETROLOGY |  | | Journal (article/letter/editorial) | | group 2 ultrapotassie kimberlites from Finseh Mine, South Africa K.J. F r a s e r a,b a n d C.J. H a w k e...group 2 ultrapotassic kimberlites from Finsch Mine, South Africa. In: A. Peccerillo and S. Foley (Editors)...kimberlites from a single pipe, at the Finsch Mine, South Africa. These are Group 2 kimberlites characterised...entrainment of 50-60% mantle peridotite. Thus, the Finsch kimberlites are interpreted as mixtures of a melt...STSr/86Sr garnet peridotite xenoliths found at Finsch. Within the sub-continental mantle lithosphere |  | | Book | | discovery of these rocks in the Orange Free State of South Africa. The name is not a new one: In 1928, Percy Wagner...Orangeites 1.8. Occurrences of Orangeites . 1. 8.1. Finsch . . . . . . . . 1.8.2. Barkly West Region. 1.8...3. Boshof District . . . 1.8.3.1. Roberts Victor 1.8.3.2. New Elands 1.8.4. Winburg District ... 1.8.5...Kroonstad District .. 1.8.6. Swartruggens District. 1.8.7. Dokolwayo .. 1.8.8. Prieska District 1.8.9. Summary...Paragenesis .,. 2.2.2. Composition... 2.2.2.1. Diopside 2.2.2.2. Titanian Aegirine . 2.2.2.3. Minor Elements |  | | Journal (article/letter/editorial) | | 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...Hyderabad, and the only modern producing diamond mine in India exploits the Majhgawan lamproite pipe near...Brazilian era continued until the South African discoveries of the 1860âs, and South African diamond production...until the first decades of the 20th century. South Africa is still a significant producer, but since about |  | Fraser, K.J., Hawkesworth, C.J., Erlank, A.J., Mitchell, R.H., Scott-Smith, B.H. (1985) Sr, Nd and Pb isotope and minor element geochemistry of lamproites and kimberlites. Earth and Planetary Science Letters, 76 (1) 57-70 doi:10.1016/0012-821x(85)90148-7 | Journal (article/letter/editorial) | | of Geochemisto', University of Cape Town, Rondebosch 7700 (South Africa) ¢ Department of Geolog& Lakehead...Smoky Butte = -21.6 to -25.9: Group II kimberlites: Finsch M i n e - 5.8 to -7.4) and (87Sr/S6Sr)i > Bulk... K, Ta, Sr, P, Hf, Zr and Ti), Smoky Butte and Finsch rocks plot below the Pb-ore growth curve (2°6pb/Z°4pb...e l e c t e d suites from Western Australia, South Africa, and M o n t a n a , U.S.A., a n d use t h e...leucite-bearing olivine-diopside lamproites, to leucite lamproites with phlogopite, diopside and potassic richterite |  | | Book | | calcite, clay minerals and fragments of crustal and local host country-rock. At Lattavaram the kimberlite...systematic increase in the solid solubility of diopside component in Ca2_ ^ 5MgT 3Al2Si30i2 garnet with...Iherzolite nodules in kimberlites(from Lesotho and South Africa) and were analysed for isotopic compositions...208/204=36.85) is similar to the least radiogenic diopside sample reported by Kramers(1977), and plots on...Extended Abstract, First Kimberlite Conference, Cape Town, 23. Basu, A. R. and Murthy, V. R.(1977) EPSL |  | | Journal (article/letter/editorial) | | of syngenetic inclusions in diamond from the Finsch Mine, RSA DAVID LOWRY, DAVID P. MATTEY, and JEFFREY...in peridotitic and eclogitic xenoliths from the Finsch kimberlite by laser-fluorination. Oxygen isotope...harzburgitic garnets from the Finsch and De Beers Pool mines in South Africa (Richardson et al., 1984)....xenolith suites in kimberlites from the Finsch mine, RSA. The Finsch basaltic kimberlite (Smith, 1983) is...the best documented diamond locality in southern Africa. Previous studies have concentrated on mineral |  | | Journal (article/letter/editorial) | | variations in diamonds from Finsch and Premier kimberlite, South Africa PETER DEINES Department of Geosciences...Geochemistry Department, University of Cape Town, Rondehosch 7700. South Africa and J. W. HARRIS Department...inclusion-containing diamonds from the Premier kimberlite, South Africa, 93 inclusion-containing diamonds and four diamonds...diamond-bearing peridotite xenoliths from the Finsch kimberlite, South Africa was measured. The data suggest a relationship...composition of inclusion minerals in diamonds from the Finsch and Premier kimberlite. Fragments of the diamonds |  | | Journal (article/letter/editorial) | | Evolution of the South African mantleâa case study of garnet peridotites from the Finsch diamond mine (Kaapvaal...mineral analyses of Finsch mantle peridotites indicate a complex history of the South African sub-continental...cratonization of the Kaapvaal craton underneath Finsch occurred at ~2.6 Ga. The data of this study indicate...enrichment processes during that early history of Finsch SCLM. Calculated degrees of partial melting using...Hf concentrations and subchondritic Lu/Hf, many Finsch peridotites were metasomatically overprinted between |  | | Journal (article/letter/editorial) | | Diamond-Bearing Peridotite Xenoliths from the Finsch Kimberlite, South Africa S.R. Shee l, j.j. Gurney2, and D.N...Geochemistry Department, University of Cape Town, Rondebosch 7700, South Africa 3 Anglo American Research Laboratories...Crown Mines 2025, South Africa Abstract. Two diamond bearing xenoliths found at Finsch Mine are coarse garnet...different to the majority of mineral inclusions in Finsch diamonds. This suggests a different origin for...garnet lherzolites from the Finsch Mine, near Postmasburg, Cape Province, S. Africa. These peridotites join |  | | Journal (article/letter/editorial) | | KIMBERLITES AND MANTLE-DERIVED XENOLITHS FROM SOUTHERN AFRICA J.D. KRAMERS Bernard Price Institute of Geophysical...University of the Witwatersrand, Johannesburg (South Africa} Received October 18, 1976 Revised version...and from the area around Kimberley (Cape Province, South Africa). In the case of the autoliths potassium...indication that the upper mantle beneath Southern Africa is isotopically heterogeneous on a regional scale...Bellsbank (samples 12, BbD); k = Finsch (samples D, E). crete diopside nodules, nine peridotites and one |  | (Fanus) Viljoen, K.S., Dobbe, RenĂŠ, Smit, Braam, Thomassot, Emilie, Cartigny, Pierre (2004) Petrology and geochemistry of a diamondiferous lherzolite from the Premier diamond mine, South Africa. Lithos, 77 (1) 539-552 doi:10.1016/j.lithos.2004.03.023 | Journal (article/letter/editorial) | | diamondiferous lherzolite from the Premier diamond mine, South Africa K.S. (Fanus) Viljoen a,*, ReneĚ Dobbe a,...Mines Limited, P.O. Box 82232, Southdale 2135, South Africa Laboratoire de GeĚochimie des Isotopes Stables...peridotite xenolith from the Premier diamond mine in South Africa. The xenolith is altered with pervasive...diamondiferous peridotite from the Premier diamond mine. Such xenoliths are surprisingly rare on the Kaapvaal...with four specimens having been described from Finsch (Shee et al., 1982; Viljoen et al., 1992), eight |  | Richardson, S.H., PĂśml, P.F., Shirey, S.B., Harris, J.W. (2009) Age and origin of peridotitic diamonds from Venetia, Limpopo Belt, KaapvaalâZimbabwe craton. Lithos, 112. 785-792 doi:10.1016/j.lithos.2009.05.017 | Journal (article/letter/editorial) | | Geological Sciences, University of Cape Town, Rondebosch 7701, South Africa Institut fĂźr Mineralogie, Westfälische...xenoliths are open systems subject to metasomatism and local-scale re-equilibration during mantle residence as...Archean Kaapvaal and Zimbabwe cratons of southern Africa (Fig. 1) includes stabilization of the Kaapvaal...cratons and intervening Limpopo Belt of southern Africa (after Holzer et al., 1999; Zeh et al., 2007) showing...Palala (PSZ) and Hout River (HRSZ) shear zones, and Northern Marginal Zone (NMZ) bounded by the Triangle shear |  | Jaques, A. L., O'Neill, H. St. C., Smith, C. B., Moon, J., Chappell, B. W. (1990) Diamondiferous peridotite xenoliths from the Argyle (AK1) lamproite pipe, Western Australia. Contributions to Mineralogy and Petrology, 104 (3) 255-276 doi:10.1007/bf00321484 | Journal (article/letter/editorial) | | USA (McCallum and Eggler /976), 2 from Finsch in South Africa (Shee et al. 1982) and the remainder from...side of Lake Argyle on the Ord River some 200 km south of the town o f K u n u n u r r a (lat 16 ~ 42'...from a lower grade ( < 1 ct/tonne) facies at the northern end of the pipe, the " N o n - S a n d y Tuff"...of the diamonds in the peridotite xenoliths from Finsch (Shee et al. 1982) which are also coloured, the...garnet (now replaced by spinel symplectites) and diopside and, in some cases, traces of picrochromite. The |  | | Journal (article/letter/editorial) | | prediction that the radioelement concentrations in the Finsch kimberlite diatreme and the Bellsbank fissure kimberlite...in the Premier mine, though radioelement segregation could produce the required local concentrations...e r of olive-green stones f r o m the Finsch Mine, South Africa. Diam o n d s with opaque-green coats...(Polinard, I929) a n d are also f o u n d in West Africa ( G r a n t h a m a n d Allen, 196o). D i a m o...Diamond Division Ltd., P.O. Box 916, Johannesburg, South Africa. O Copyright the Mineralogical Society. 350 |  | | Journal (article/letter/editorial) | | calculations for Roberts Victor, but hotter than for the Finsch, Kimberley, KoÂefontein and Premier Mines. This...J.J. Gurney Geological Department, University of Cape Town, 7700, Rondebosch, RSA L.R.M. Daniels Nomathata...presently the only diamond producing kimberlite mine in Zimbabwe, where more than 30 kimberlites have...which is a high-grade metamorphic terrane in the northern part of the Kaapvaal craton. The Early Archean...subdivided into three zones separated by faults: the Northern Marginal Zone (NMZ); the Central Zone (CZ); and |  | Korolev, N.M., Kopylova, M., Bussweiler, Y., Pearson, D.G., Gurney, J., Davidson, J. (2018) The uniquely high-temperature character of Cullinan diamonds: A signature of the Bushveld mantle plume?. Lithos, 304. 362-373 doi:10.1016/j.lithos.2018.02.011 | Journal (article/letter/editorial) | | gdpearso@ualberta.ca 4 University of Cape Town, Cape Town, South Africa, john.gurney@msgroup.net PT E D...D 5 Petra Diamonds, Bryanston, South Africa, jim@petradiamonds.com February 2017 AC CE Revised for...thermal disturbance. Keywords: Cullinan kimberlite mine, Bushveld Igneous Complex, diamond inclusions, thermobarometry...et al., 2003). Peridotite xenoliths define the local geotherm (Viljoen et al., 2009) consistent with...than those sampled by some other South African kimberlites, i.e. at Finsch, Venetia and De Beers Pool (Viljoen |  | Smith, C.B, Gurney, J.J, Harris, J.W, Otter, M.L, Kirkley, M.B, Jagoutz, E (1991) Neodymium and strontium isotope systematics of eclogite and websterite paragenesis inclusions from single diamonds, Finsch and Kimberley Pool, RSA. Geochimica et Cosmochimica Acta, 55 (9) 2579-2590 doi:10.1016/0016-7037(91)90374-e | Journal (article/letter/editorial) | | websterite paragenesis inclusions from single diamonds, Finsch and Kimberley Pool, RSA C. B. SMITH,ââ J. J. GURNEY...of the Witwatersrand, WITS 2050 Johannesburg, South Africa *Max-Planck-Institut ftir Chemie, Abteilung...of Geochemistry, University of Cape Town, Rondebosch 7700, South Africa 4Department of Geology and Applied...single diamonds (1.8 to 4.2 carats) from the 120 Ma Finsch kimberlite have Nd model ages ranging from 1443...and Mn, possibly a characteristic feature of the Finsch eclogitic diamond paragenesis suite. A large diamond |  | | 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) | | 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...important De Beers Pool kimberlites in Kimberley, South Africa (28j46VS, 24j48VE). The Kimberley region is...the site of the first diamond discoveries in South Africa, the type locality for Group I (basaltic) kimberlites |
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