 | | Journal (article/letter/editorial) | | Accepted Manuscript New constraints on archetypal South African kimberlite petrogenesis from quenched glass-rich...Steffen H. BĆ¼ttner , New constraints on archetypal South African kimberlite petrogenesis from quenched glass-rich... ACCEPTED MANUSCRIPT New constraints on archetypal South African kimberlite petrogenesis from quenched glass-rich...Rondebosch 7701, South SC 1 RI Geoffrey H. Howarth1,2,* and Steffen H. BĆ¼ttner3 Africa Department of...Geology, Rhodes University, Grahamstown 6040, South Africa NU 2 AC CE PT E D MA *Corresponding |  | | Book | | relevant protective laws and regulations and therefore free for general use. 2132/3130-543210 To my wife,...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. . . . . . . . . .... . . . . . . . . . . . . . . . Southern Africa . . . . . . . . . . . . . . . . . . . . . U.S.S.R. . |  | | 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...7.2. 2. Compositional Variation of Contamination-Free Kimberlites .......... 7.2 .2 .I. Intra-kimberlite.......................... 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 |  | 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) | | abrasion of zircon and ilmenite megacrysts in the Monastery kimberlite: Implications for the composition of...ilmenite and zircon megacrysts from the Monastery kimberlite (South Africa) represent a textbook example of...supply of Ca, which is readily available in the carbonatite component of the kimberlite magma. The enrichment...exploration. The āclassicā megacryst suite in the Monastery kimberlite, renowned for the size of its crystals...more abundant in the Group I Monastery kimberlite pipe in South Africa than in any other studied kimberlite |  | | 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 |  | BATUMIKE, J, GRIFFIN, W, BELOUSOVA, E, PEARSON, N, OREILLY, S, SHEE, S (2008) LAM-ICPMS UāPb dating of kimberlitic perovskite: EoceneāOligocene 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) | | analysis of perovskites from four previously dated South African Group I kimberlites. Intercepts of regression... The ages of Group I kimberlites in Kimberley District cluster around 87 Ma, similar to those determined...perovskites from some previously-dated Group I South African kimberlites. 2. Geological setting The Kundelungu...Mesoproterozoic Irumide belt to the southeast, and to the south by the Mesoproterozoic Choma-Kalomo block and the...Zambezi belt. The Zimbabwe craton lies further south (Fig. 1). The evolution of the Katangan Belt was |  | | Journal (article/letter/editorial) | | ultrabasic inclusions from India, Greenland and Africa have been determined and shown to be held by apatite...represented by six ultrabasic xenoliths from southern Africa (none has been found in the Indian kimberlites)...also investigated since this is relatively volatile-free. MATERIAL STUDIED Over half the specimens analysed...be divided in two groups; those from central and south India. The central Indian samples are serpentinised...phlogopite up to 0.5 cm across are often present. The south Indian samples, especially those from the Wajrakarur |  | | Journal (article/letter/editorial) | | Koptyuga 3, Novosibirsk, 630090 Russia b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090...diamonds indicate that they crystallized from Ca-carbonatite melts that were derived from partial melting...and metabasic mantle lithologies with alkaline carbonatite melts. The discovery of the inclusions of carbonates...2001; McCammon, 1997; Wilding et al., 1991), West Africa (Joswig et al., 1999; Stachel et al., 2002; Stachel...craton, South Africa (Deines et al., 1991; McDade and Harris, 1999; Moore and Gurney, 1985), South Australia |  | | Book | | calcite, clay minerals and fragments of crustal and local host country-rock. At Lattavaram the kimberlite...Akimoto and Masaki Akaogi (Institute for Solid State Physics, University of Tokyo, Roppongi 7-22-1, Minato-ku...Iherzolite nodules in kimberlites(from Lesotho and South Africa) and were analysed for isotopic compositions...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 |  | | Journal (article/letter/editorial) | | earlyinclusions kimberlite in melt [44ā46], mantle carbonatite withtoa subduction metasomatic agents in the...primary or early kimberlite melt [44ā46], mantle carbonatite with a subduction polymineralic inclusions in...et al. [44];ettheir 2. Polymineralic diamondmine, mine, Slave craton, Canada (modified after Bussweiler...Gurney et al., 1979 [32] Monastery kimberlite, Kaapvaal craton, South Africa ol Ti-rich phl, ol, spl...and BĆ¼ttner, 2019 [45] Monastery kimberlite, Kaapvaal craton, South Africa ol cc, phl, spl (low Al |  | | Journal (article/letter/editorial) | | Layered Kimberlite-Carbonate Sill from Benfontein, South Africa Nabil Z. Boctor and F.R. Boyd Geophysical Laboratory...USA Abstract. The lower sill at Benfontein, South Africa, shows a high degree of magmatic sedimentation...Introduction The relation between kimberlite and carbonatite has been a subject of controversy among petrologists...genetic relationship between kimberlite and carbonatite (Dawson and Hawthorne 1973; Gittens etal. 1975)...1975). On the basis of a study of the Oka carbonatite, Quebec, M c M a h o n and Haggerty (1979) concluded |  | | 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... K. J. Stracke, 59 OF KIMBEHLITES H.-M. IN SOUTH-EASteRN AUSTRALIA 71 J. Ferguson, anā¢ L. P. Black...CARBONATITEERUPTIVES AT SALTPETRE 111 KOP, SUā¢}tERLAND, SOU'iH AFRICA J. R. ā¢cIver and J. Ferguson Mā¢NERALOGY AND PETROLOGY...MINERAL CHEMISTRY OF A KIMBERLITE FROM THE PRā¢Iā¢IER MINE: Iā¢iPLICATIONS FOR THE EVOLUTION OF KiFmEHLITIC |  | | Journal (article/letter/editorial) | | SCIENCES, DURHAM UNIVERSITY, SOUTH ROAD, DURHAM DH1 3LE, UK 2 ARIZONA STATE UNIVERSITY, CHEMISTRY AND BIOLOGY...CENTRE, PO BOX 82232, SOUTHDALE GAUTENG 2135, SOUTH AFRICA 5 NERC ISOTOPE GEOSCIENCES LABORATORY, KINGSLEY...PUBLICATION JULY 1, 2004 Kimberlites from Southern Africa, along with their low-Cr megacrysts, have unusual..., 1995). The samples studied are from Southern Africa, belonging to the isotopic Groups I and II of Smith...Kallvallei and Star (S. Africa) kimberlites plus the Kamfersdam dump (Kimberley, S. Africa) have been analysed |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Johannesburg 2001 (South Africa) (Received April 5, 1982; revised and accepted...localities); of these, five (the Kimberley pipes and Monastery) are certainly post-Karroo .- ' ' ' t._-',~,..." o ! 5 00 ! Fig. 1. Sketch map of southern Africa with localities of pipes studied (1 = Kimberley...Bultfontein Wesselton, Dutoitspan pipes; 2 = Monastery ; 3 = Goadgevonden ; 4 = Beit Bridge; 5 = Colossus;...for whole-rock or for mineral separation, were as free of xenoliths or xenocrysts as possible. Often this |  | | Journal (article/letter/editorial) | | Springer-Verlag 1984 The alleged kimberlite-carbonatite relationship: evidence from ilmenite and spinel...and Wesselton Mines and the Benfontein Sill, South Africa Jose C. Gaspar 1 and Peter J. Wyllie 2 Instituto...dikes which satist~y petrographic definitions of carbonatite. Arguments that these rocks have mineralogies...been used to refute the "alleged kimberlite-carbonatite relationship". New microprobe analyses of ihnenites...carbonate-rich rocks associated with kimberlites in three South African localities correspond to spinels and ilmenites |  | | Journal (article/letter/editorial) | | Northern Ireland The isotopic comp~i~on of carbonatite =a kimberlite carbonates andtheir bearing on...GOLD Department of Ceoscitmces, The Pennsylvania State University, University Park, Pennsylvania 16802...on the carbon isotopie composition ranges of carbonatite and kimberlite carbonates shows that they are...isotopio oomposition of carbonates from 22 selected carbonatite complexes ( --6*1yW, 8 = fl*40/, vs PDB) is indistingnishable...~~bona~s of higher @a content ( -2.4 to -4~433. If carbonatite and kimberlite carbonates ae well as diamonds |  | | Journal (article/letter/editorial) | | kimberlites in the northern Lesotho Orange Free State (South Africa) and Botswana pipe clusters - A.E. Moore...kimberlites of the northern Lesothoā eastern Orange Free State Cluster are characterised by Closely overlapping...of temperatures (e.g. 45 kbar, 1400-1050Ā°C at Monastery (Moore et al., 1992); 52 kb, 1470-1190Ā°C at Jagersfontein...This model was supported by evidence from the SOUTH AFRICAN JOURNAL OF GEOLOGY, 200 1,VOLUME 104, PAGE...peridotites can therefore not be used to infer steady-state mantle conditions, and thus vertical mantle zonation |  | 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) | | (DU-1) from the Bultfontein Dumps (Kimberley, South Africa). Xenolith DU-1 contains heterogeneous domains...isotope values (initial ĪµHf =2.1ā3.0) in the range of South African Group I kimberlites and associated megacrysts...collected from the Bultfontein Dumps (Kimberley, South Africa). Textural relationships, mineral inclusion...collected from the Bultfontein Dumps (Kimberley, South Africa). The Bultfontein Dumps comprise waste material...mantle and crustal xenoliths) from the Bultfontein mine, which is one of four major diamond-producing kimberlites |  | Starikova, Anastasiya, Prokopyev, Ilya, Doroshkevich, Anna, Ragozin, Alexey, Chervyakovsky, Vasily (2021) Polygenic Nature of Olivines from the Ultramafic Lamprophyres of the Terina Complex (Chadobets Upland, Siberian Platform) Based on Trace Element Composition, Crystalline, and Melt Inclusion Data. Minerals, 11 (4) 408 doi:10.3390/min11040408 | Journal (article/letter/editorial) | | Department of Geology and Geophysics, Novosibirsk State University, 630090 Novosibirsk, Russia Geological...igneous province (LIP), and the Chadobets UML-carbonatite complex was intruded in the southern part of...of the Chadobets complex is the formation of carbonatite stocks up to 3 km Minerals 2021, 11, 408 3...within the Chuktukon complex (Figure 1b). The carbonatite dykes have a crosscutting contact with the early...of the Chadobets ultramafic lamprophyre (UML)carbonatite complex [27,34]. (c) Location of the Devonian |  | | 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...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) | | Ā± cpx Ā± opx Ā± gt, with melt composition on a CO2-free basis varying from 7 to 40 wt.% SiO2, 0.5 to 7 wt...sulfide phase, the SCSS changes from 2000-4000 ppm (Ni-free) to is 800-3000 ppm (33 wt.% Ni). Comparison of...with the existing SCSS models for nominally CO2-free silicate melts and with one study for carbonated...for melt compositions that span the range from carbonatite to basalts via carbonated silicate melts, we...of the initial sulfur before nominally-volatile-free peridotite melting begins. In continental mantle |  | | Journal (article/letter/editorial) | | Department of Geology and Geophysics, Novosibirsk State University, Pirogova st. 2, Novosibirsk 630090,... T Keywords: mantle xenolith, kimberlite, carbonatite, melt inclusion, alkaline carbonate, nyerereite...four occurrences) being commonly considered as local artifacts of secondary alteration (Watkinson and...mineral in kimberlite dikes in the Upper Canada Gold Mine (Watkinson and Chao, D 1973) and later in the...kimberlites in the Upper Canada Gold Mine and in serpentine-free or serpentine-poor (up to only 2 vol |  | 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) | | symplectites occur more rarely in Yakutia compared with South African kimberlites (Dawson and Reid, 1970; Ringwood...containing Cr diopsides similar to those described in South African kimberlites (Moore and Lock, 2001) (Fig...by continuous fractionation, as suggested for South Africa (Moore et al., 1992; Griffin et al., 1997) and...and Hf, similar to those for ilmenites from South Africa (Dawson et al., 2001; Gregoire et al., 2003)...by Gurney et al. (1979) for ilmenites from the Monastery pipe based mainly on the PT estimates for IlmāOpx |  | Giuliani, Andrea, Phillips, David, Kamenetsky, Vadim S., Fiorentini, Marco L., Farquhar, James, Kendrick, Mark A. (2014) Stable isotope (C, O, S) compositions of volatile-rich minerals in kimberlites: A review. Chemical Geology, 374. 61-83 doi:10.1016/j.chemgeo.2014.03.003 | Journal (article/letter/editorial) | | partial overprinting by secondary processes at the local scale. Carbonates in southern African Group I (or.... . . . . . . 2.2.3. Local variations of CāO isotopes: Kimberley (South Africa), Lac de Gras (Canada)...glasses, aphanitic (i.e. ļ¬ne-grained, macrocryst-free) hypabyssal kimberlites have been widely considered...hypabyssal kimberlite samples from: (a) the Diavik mine (Lac de Gras, Canada), and (b) the Gollapalle pipe...The C isotopic composition of most unaltered carbonatite rocks, which are thought to crystallise from |  | | Journal (article/letter/editorial) | | of Cape Town, Private Bag, Rondebosch 7700, South Africa* Abstract. Petrographic and chemical criteria...though markedly more abundant in the megacrystrich Monastery kimberlite, is Fe-rich relative to rim compositions...of the South African kimberlites and both from Kentucky. The kimberlites from southern Africa for which...across the sub-continent (Letseng-la-terai and Monastery in the east, de Beers, Sover, Bellsbank and Newlands...Letseng-la-terai from Gurney and Ebrahim (1973)]. The Monastery kimberlite, which is also on the craton, is classified |
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