 | | 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,ā, 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 | | 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. . . . . . . . . . |  | | Report (chapter) | | micaceous matrix, and the vine, phlogopite, picroilmenite, chromian spiso-called 'basaltic' variety containing...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 |  | | Book | | calcite, clay minerals and fragments of crustal and local host country-rock. At Lattavaram the kimberlite...Iherzolite nodules in kimberlites(from Lesotho and South Africa) and were analysed for isotopic compositions...Extended Abstract, First Kimberlite Conference, Cape Town, 23. Basu, A. R. and Murthy, V. R.(1977) EPSL...University of the Witwatersrand, Johannesburg, 2001, South Africa) Radiometric age determinations were undertaken...undertaken on 15 kimberlite occurrences in Southern Africa, emphasis being placed on a wide areal distribution |  | | Book | | stationery while vacationing on the Natal Coast of South Africa. Wilson uses it as a symbol of the Ivory Coast...Institute of Anieriea wanted to update its diamond mining and reeovery inlormation, we asked the assistance...blood, my father (a distinguished editor ol the Cape Times) having been one ol lour sons ol a sullragan...became imbedded in the Witwatersrand formation in South Africa . 98 Continental Shields of the Earth. 101...108 The Hope Diamond (Color Plate). 129 Map of South Africa . 133 Distribution of known kimberlite occurrences |  | Soltys, Ashton, Giuliani, Andrea, Phillips, David, Kamenetsky, Vadim S., Maas, Roland, Woodhead, Jon, Rodemann, Thomas (2016) In-situ assimilation of mantle minerals by kimberlitic magmas ā Direct evidence from a garnet wehrlite xenolith entrained in the Bultfontein kimberlite (Kimberley, South Africa) Lithos, 256. 182-196 doi:10.1016/j.lithos.2016.04.011 | Journal (article/letter/editorial) | | xenolith entrained in the Bultfontein kimberlite (Kimberley, South Africa) Ashton Soltys, Andrea Giuliani...xenolith entrained in the Bultfontein kimberlite (Kimberley, South Africa), LITHOS (2016), doi: 10.1016/j...xenolith entrained in SC RI the Bultfontein kimberlite (Kimberley, South Africa). Ashton Soltys1,*, Andrea...kbar (~140-145 km)] from the Bultfontein kimberlite (Kimberley, South Africa). This vein assemblage is dominated...from the Bultfontein kimberlite, as well as perovskite from the other kimberlites in the Kimberley area. |  | 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) | | polymict breccia (DU-1) from the Bultfontein Dumps (Kimberley, South Africa). Xenolith DU-1 contains heterogeneous...isotope values (initial ĪµHf =2.1ā3.0) in the range of South African Group I kimberlites and associated megacrysts...xenolith (DU-1) collected from the Bultfontein Dumps (Kimberley, South Africa). Textural relationships, mineral...1) collected from the Bultfontein Dumps (Kimberley, South Africa). The Bultfontein Dumps comprise waste...the Bultfontein mine, which is one of four major diamond-producing kimberlites in the Kimberley cluster |  | | Book (volume) | | ANDWILLIAMSON MINE, TANZANIA H.-M. Tsai, O. A. Meyer, 0. Moreau, and H. Judith Milledge REGIONAL AND LOCAL VARIATIONS...KIFYBERLiTES IN THE COLORADO-WYCā¢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, anā¢ L. P. Black...92 DYKES WITH KIMBERā¢.ITE AFFINITIES IN THE KIMBERLEY AREA C. R. Clement, E. M. Skinner, J. B. Hawthorne...CARBONATITEERUPTIVES AT SALTPETRE 111 KOP, SUā¢}tERLAND, SOU'iH AFRICA J. R. ā¢cIver and J. Ferguson Mā¢NERALOGY AND PETROLOGY |  | | Journal (article/letter/editorial) | | occur in the Bultfontein, De Beers, Wesselton and Dutoitspan kimberlite diatremes, S. Africa (WAGNER, 1914;...rocks from the De Beers Mine (WILLIAMS, 1932), mica-apatite rock, Newlands Mine (WAGNER, 1914), phlogopiteeolivine...diopside-phlogopite rock from the Roberts Victor Mine, the minerals of which have MARID-type composition...grains are up to 0.1 mm. Subhedral grains of picroilmenite occur both interstitially and enclosed within... 1082 wesse1ton 80-15 15-80 ACC. 1158 Bultfontein II V'r 50 5 10 ACC. 3 1 Notes BD 1159 1160 |  | Kostrovitsky, S.I., Yakovlev, D.A., Soltys, A., Ivanov, A.S., Matsyuk, S.S., Robles-Cruz, S.E. (2020) A genetic relationship between magnesian ilmenite and kimberlites of the Yakutian diamond fields. Ore Geology Reviews, 120. 103419 doi:10.1016/j.oregeorev.2020.103419 | Journal (article/letter/editorial) | | ādiļ¬useā distribution types with one distinctive local area on MgOCr2O3 plot (Figure Supplementary Fig..., 1997), Jagersfontein (South Africa ā Jonston, 1973), Premier (South Africa ā Danchin, 1979), Letlhakane...lithospheric mantle beneath the Kaapvaal craton, South Africa. LITHOS, Volume 149, p. 31-50. Bizzi L.A., Smith...in southwestern Sao Francisco craton: a case for local mantle reservoirs and their interaction. Araxa Proceedings...from some kimberlites of Northern Lesotho and the Monastery Mine, South Africa. In: Physics and Chemistry |  | | Journal (article/letter/editorial) | | titanates from the Jagersfontein kimberlite, South Africa: Implications for metasomatism in the upper...geochemistry, given that leucite-lamproities in West Kimberley, Australia (WADEand PRIDER, 1940; PRIDER, 1960)...kimberlite, 130 km SE of the Kimberley diatrcme complex in the Republic of South Africa. Data on this kimberlite...Beers Jagersfontein kimberlite titanates and Bultfontein, respectively. Structural characterization by...the Jagersfontein, Bultfontein, De Beers and Kolonkwanen kimberlites in South Africa (HAG GERTYet al., |  | | Journal (article/letter/editorial) | | breccia xenolith from the Precambrian Premier Mine, South Africa, and the same type of xenolith from the Middle...Paleozoic age (Pokhilenko and Sobolev, 1978) and the South African pipes with Mesozoic emplacement ages (Lawless...unique xenolith of polymict breccia from the Premier Mine ā the ļ¬rst ļ¬nd of this type of rock in the kimberlites...xenolith of polymict breccia from the Premier Mine, South Africa, and a xenolith of polymict peridotite from...established for xenoliths of the same nature from the Bultfontein and DeBeers Mines Table 1 Representative microprobe |  | | Journal (article/letter/editorial) | | Moscow 117593, Russia ā CSIRO Exploration and Mining, PO Box 136, North Ryde, NSW 2113, Australia d...from the central part of the Kaapvaal craton in South Africa, eclogitic diamonds are in the majority in the...kimberlite mining in South Africa (Williams, 1932). In a detailed study of diamonds from the main South African...that diamonds from closely spaced pipes in the Kimberley area are generally very similar, although some...1). It was found during the early stages of the mining operations on the Mir pipe, and was mined together |  | Graham, S., Lambert, D.D., Shee, S.R., Pearson, N.J. (2002) Juvenile lithospheric mantle enrichment and the formation of alkaline ultramafic magma sources: ReāOs, LuāHf and SmāNd isotopic systematics of the Norseman melnoites, Western Australia. Chemical Geology, 186 (3) 215-233 doi:10.1016/s0009-2541(01)00408-9 | Journal (article/letter/editorial) | | Exploration Australia Limited, 60 Wilson Street, South Yarra, Victoria 3141, Australia c Australian Research...melnoite. Western Mining, during exploration gold drilling near the Lady Miller gold mine, intersected an...1300-Ma Bulljah-05 alkaline ultramafic intrusion (northern Yilgarn Craton; Graham et al., 1999b) and an ilmenite...ilmenite megacryst from the Maude Creek kimberlite (Kimberley Craton; Graham et al., 1999a). Initial eNd values...Groundmass magnetite Picroilmenite ( + 1.00 mm) Picroilmenite ( + 1.00 mm) Picroilmenite (1.00 ā 0.5 mm) Picroilmenite |  | | Book | | e SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE Cape Town, April 1998 EXTENDED ABSTRACTS All extended...responsibility for authorsā errors and omissions. SOUTH AFRICA SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE...Survey of South Africa) SouthemEra Resources Ltd SOCIETY SPONSORS Geological Society of South Africa (GSSA)...a Phanerozoic subduction regime in eastern New South Wales, Australia. Mantle Dynamics beneath Mongolia:...growth of Archean cratons: a case study from west Africa. The vertical distribution of indicator minerals |  | | Journal (article/letter/editorial) | | b Mineral Services South Africa, Cape Town 7430, South Africa c University of Cape Town Kimberlite Research...Research Group, Cape Town 7700 South Africa d Mineral Services Canada, North Vancouver, British Columbia...Elsevier B.V. All rights reserved. Keywords: Picroilmenite; Geikielite; Hematite; Kimberlite; Exploration;...areas hosting kimberlite intrusions. In Southern Africa, ilmenites are present in the volcanic successions...Southern Africa Kimberlites On-craton Southern Africa Kimberlites Kimberlites West Africa North America |  | | Book | | ............................ 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...purely serendipitous and occurred on the farms of Bultfontein and Dorstfontein, locally known as Dutoitspan |  | | Book (volume) | | development since the First Kimberlite Conference, held in Cape Town in 1973, has come in the interpretation of...Diamond-Graphite Ecologite From the Roberts Victor Mine, C. J. Hatton and John J. Gurney .................Granulites and Eclogites From Lesotho, Southern Africa, W. L. Griffin, D. A. Carswell, and P. H. Nixon...Garnet Harzburgite XenolithsFrom the Premier Mine, South Africa, R. V. Danchin ...........................Geochemistryof Ultramarie NodulesFrom Pipe 200, Northern Lesotho, D. A. Carswell, D. B. Clarke, and R. |  | | Journal (issue) | | Diamonds Sapphire from Mogok, Myanmar Gemstone Mining in Vietnam Winter 2013 VOLUME 49, No. 4 EDITORIAL...formation. 223 Blue Sapphires from the Baw Mar Mine in Mogok Hpone-Phyo Kan-Nyunt, Stefanos Karampelas...Burmese sapphire. pg. 223 233 Update on Gemstone Mining in Luc Yen, Vietnam Pham Van Long, Vincent Pardieu...combined weight of the piece, retrieved from South Africa, is 314.47 carats. This specimen is part of...Mar area in Mogok, Myanmar; an update on gemstone mining in Luc Yen, Vietnam; and the characteristics of |  | Kamenetsky, Vadim S., Belousova, Elena A., Giuliani, Andrea, Kamenetsky, Maya B., Goemann, Karsten, Griffin, William L. (2014) Chemical abrasion of zircon and ilmenite megacrysts in the Monastery kimberlite: Implications for the composition of kimberlite melts. Chemical Geology, 383. 76-85 doi:10.1016/j.chemgeo.2014.06.008 | Journal (article/letter/editorial) | | zircon megacrysts from the Monastery kimberlite (South Africa) represent a textbook example of the megacryst...in the Group I Monastery kimberlite pipe in South Africa than in any other studied kimberlite on the... A B The ilmenite is typical kimberlitic picroilmenite with MgO up to 10ā 15 wt.% (e.g., Mitchell,...deļ¬ned for zircons from other kimberlites in South Africa, Siberia and Australia (Belousova et al., 1998...temperatures reported for 84 zircon megacrysts from South African kimberlites (758 Ā± 98 Ā°C; Fu et al., 2008) |  | Ashchepkov, I. V., Alymova, N. V., Logvinova, A. M., Vladykin, N. V., Kuligin, S. S., Mityukhin, S. I., Downes, H., Stegnitsky, Yu. B., Prokopiev, S. A., Salikhov, R. F., Palessky, V. S., Khmel'nikova, O. S. (2014) Picroilmenites in Yakutian kimberlites: variations and genetic models. Solid Earth, 5 (2). 915-938 doi:10.5194/se-5-915-2014 | Journal (article/letter/editorial) | | Geochemistry SD RAS, Irkutsk, Russia 3 ALROSA Open Joint Stock Company, Mirny, Russia 4 Department of Earth...set of natural reference minerals (natural picroilmenite GF ā55) and synthetic glasses for calibration...in Supplement, files 1ā3. 3 Variations of picroilmenite compositions in Yakutian kimberlites Different...zoned in CaO (Sobolev et al., 1975) contain picroilmenite inclusions (4ā5 wt % MgO, 3.5 wt % Cr2 O3 )...symplectites occur more rarely in Yakutia compared with South African kimberlites (Dawson and Reid, 1970; Ringwood |  | Rezvukhin, Dmitriy I., Malkovets, Vladimir G., Sharygin, Igor S., Tretiakova, Irina G., Griffin, William L., O'Reilly, Suzanne Y. (2018) Inclusions of crichtonite-group minerals in Cr-pyropes from the Internatsionalnaya kimberlite pipe, Siberian Craton: Crystal chemistry, parageneses and relationships to mantle metasomatism. Lithos, 308. 181-195 doi:10.1016/j.lithos.2018.02.026 | Journal (article/letter/editorial) | | heavy-mineral concentrates from 3 ACCEPTED MANUSCRIPT South African kimberlites (Erlank et al., 1987; Giuliani...plume-related Karoo volcanism beneath the Kimberley region, South Africa. The metasomatic CE origin of Cr-pyrope...also other Ti- and/or Cr-rich oxides: rutile, picroilmenite, Cr-spinel, armalcolite, srilankite and others...of Cr-rich PT titanium oxides (rutile and picroilmenite) and in rare cases with Cr-spinel. Elongated...shows slight variations which probably reflect local (diffusional?) heterogeneities governed by the position |  | | Report (chapter) | | Ellendale and Argyle, on the SW and E margins of the Kimberley craton in N W Australia (Atkinson et al. 1984a...kimberlites (e.g. the Group II kimberlites of S Africa (Smith 1983a, b) and other m i c a c e o u s kimberlites)...et al. 1985; Foley et al., K-rich rocks occur as local variations within in review). Niggli (1923, pp....1.5 x 103 to 2.5 ā¢ 103 Ma. Enoree Vermiculite district, S Carolina ( E V D ) (34 ~ 30' N, 82 ~ W) Geochemical...contain macrocrysts of olivine, phlogopite, picroilmenite and rare pyrope in a groundmass of olivine, |  | | Book | | (Novosibirsk) International Treasurer: H.O.Meyer (USA) Local Treasurer: 0 AKozmenko (Novosibirsk) Members: V...associated alkalic basaltic rocks from Pishin District, Pakistan.4 Reasons of variations of individual...lamproites and kimberlites of the Kola peninsula and Northern Karelia.............28 Experimental study of fluid...prognosis and prospering of diamond's host rocks on the south of Siberian platform.38 The petrology and geochemistry...geochemistry of a polymict xenolith from the Kimberley Area, South Africa......40 Eclogites from the Mir kimberlite |
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