 | | Journal (article/letter/editorial) | | inclusion chemistry beneath the Orapa kimberlite cluster, in Botswana Peter Deines a,1, Thomas Stachel...online 5 April 2009 Keywords: Diamond Damtshaa Orapa Letlhakane Carbon isotope Regional variation a b...from the production of Damtshaa kimberlites, were investigated. The Damtshaa kimberlites belong to the...compared with similar studies of the nearby Orapa and Letlhakane kimberlites, providing the opportunity to...composition on the kilometer scale. While Orapa, Letlhakane and Damtshaa diamonds may share some overall similarities |  | | Journal (article/letter/editorial) | | in diamond from the Damtshaa mine, which comprises four kimberlites within the Orapa cluster of kimberlites...cratonic eclogite xenoliths worldwide, at the nearby Orapa Mine, and of oceanic crust. Contrary to previous suggestions...We suggest that protoliths to the eclogites at Damtshaa that were more strongly affected by lowtemperature...primary organic carbon, and, therefore, low-d13C Damtshaa diamonds are associated with recycling of crustal...garnet inclusions in diamond from the Damtshaa mine, Botswana, to show that there is a clear relationship |  | | Journal (article/letter/editorial) | | the discovery of diamonds in river deposits in central South Africa in the mid nineteenth century, it...valuable deposits were discovered in South Africa and Botswana in particular, but also in Lesotho, Swaziland...Jwaneng in Botswana, to mines that are both small and marginal, such as the Frank Smith Mine in South Africa...Africa. They include large diatremes such as Orapa and small dykes such as those mined at Bellsbank,...terrane; IIb: Central terrane; IIc: Pietersburg terrane; IId: Western terrane; IIIa: Central zone; IIIb: |  | Buse, Ben, Schumacher, John C., Sparks, R. Stephen J., Field, Matthew (2010) Growth of bultfonteinite and hydrogarnet in metasomatized basalt xenoliths in the B/K9 kimberlite, Damtshaa, Botswana: insights into hydrothermal metamorphism in kimberlite pipes. Contributions to Mineralogy and Petrology, 160 (4) 533-550 doi:10.1007/s00410-010-0492-4 | Journal (article/letter/editorial) | | basalt xenoliths in the B/K9 kimberlite, Damtshaa, Botswana: insights into hydrothermal metamorphism...volcaniclastic kimberlite of the B/K9 pipe, Damtshaa, Botswana, constrain conditions of kimberlite alteration...xenoliths within the B/K9 kimberlite pipe, Damtshaa, Botswana. There are few documented occurrences of... 90 Ma) in the Orapa District, and consists of three coalesced pipes (north, central and south), which...described and encloses an inward dipping basalt breccia lens. At depth, the coherent kimberlite appears |  | | Journal (article/letter/editorial) | | Wesselton sills and Benfontein sills in Kimberley district, South Africa, and the Snap Lake sill, Northwest...include Snap Lake (Gernon et al. 2012b), AK6 in Orapa district, du Toitspan (Ogilvie-Harris et al. 2009),... Wesselton sills (White et al. 2012), and Orapa (Sarkar et al. 2011). Flow differentiation of suspended...aphanitic kimberlite sill from Wesselton, Kimberley district, South Africa, are surrounded by a clear zone...that the location of kimberlites in the Kimberley district is preferentially favored by low horizontal mean |  | | Journal (issue) | | £KATI Dominion works to add mine life to operation . . . . 22 BOTSWANA BECKONS Prolific diamond nation...\vho are finding fertile grou nd for dian1onds in Botswana (Page 14). As ever, ive 1velco1ne your feedback...acquisition based on adding mine life and forn1ally adding ne,v projects into the mine plan and they're on track...start product ion in m id-2016. It's a much bigger mine, expected to produ ce over 5 million carats a year...equipment. It's a very good t ime to be building a mine in Canada: We're not exp ecting these guys to fall |  | | Journal (article/letter/editorial) | | (CaTiO3), a typical accessory phase, from Orapa (Botswana) and Wesselton (South Africa) kimberlites has...contamination. In-situ trace element signatures of Orapa and Wesselton perovskite grains are broadly similar...grain 87Sr/86Sr isotope ratios of perovskite from Orapa (0.7030–0.7036) are less scattered than bulk rock...pre-shallow level contamination magma compositions for Orapa and Wesselton have significantly fractionated LREE... the trace element and isotopic composition of Orapa and Wesselton kimberlites are similar to the reported |  | 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) | | previously by radiogenic isotope studies. Kimberlite breccia carbonates commonly have higher δ18O values than...hypabyssal kimberlite samples from: (a) the Diavik mine (Lac de Gras, Canada), and (b) the Gollapalle pipe...sufficient measurements (n = 33) of kimberlite breccia are available. Fig. 11 shows that there are no...massive/hypabyssal 5 5 0 0 -12 80 9 n. breccia 10 6 -10 -8 -4 δ 13C (‰) n. 70 60 -6 -2...North America Russia hypabyssal/massive Russia breccia Russia total Worldwide 190 49 239 140 82 33 145 |  | Gaudet, Matthew, Kopylova, Maya, Muntener, Colleen, Zhuk, Vlad, Nathwani, Chetan (2018) Geology of the Renard 65 kimberlite pipe, Québec, Canada. Mineralogy and Petrology, 112. 433-445 doi:10.1007/s00710-018-0633-4 | Journal (article/letter/editorial) | | Renard 65 (R65) was described as part of the Renard Mine Mineral Reserve Estimate (Godin et al. 2016). The...term is synonymous with tuffisitic kimberlite breccia (TKB) (Field and Scott Smith 1999) and somewhat...in KPKs with the notable exceptions of Orapa A/K1 in Botswana, and kimberlite pipes in Lesotho (Field...pyroclastic kimberlites were made for Venetia, Damtshaa, Ekati, and Victor (Brown et al. 2008; Nowicki... Bedell P (2016) Updated Renard diamond project mine plan and mineral reserve estimate, Québec, Canada |  | Abersteiner, Adam, Kamenetsky, Vadim S., Kamenetsky, Maya, Goemann, Karsten, Ehrig, Kathy, Rodemann, Thomas (2018) Significance of halogens (F, Cl) in kimberlite melts: Insights from mineralogy and melt inclusions in the Roger pipe (Ekati, Canada) Chemical Geology, 478. 148-163 doi:10.1016/j.chemgeo.2017.06.008 | Journal (article/letter/editorial) | | Tasmania, Hobart, Tasmania 7001, Australia. b Central Science Laboratory, University of Tasmania, Hobart...altered basalt xenoliths entrained in the Damtshaa kimberlite (Botswana; Buse et al., 2010). Fluorite is a rare...Paul et al. (1976) reported some kimberlites from central India containing NU even greater concentrations...in basalt xenoliths from the B/K9 kimberlite (Botswana) to occur between 350 – 250 °C, which is a similar...in LA-ICPMS analyses and Christian Dietz at the Central Science Laboratory (CSL) at the University of Tasmania |  | | Journal (issue) | | formation. 223 Blue Sapphires from the Baw Mar Mine in Mogok Hpone-Phyo Kan-Nyunt, Stefanos Karampelas...bring our readers more of these “direct from the mine” articles, particularly from GIA’s dedicated field...Luderitz, Oranjemund, Namaqualand; (26) Orapa/Damtshaa, Letlhakane, Jwaneng, Finsch; (27) Murowa, Venetia...Argyle mine (Shigley et al., 2001), and its smaller and younger cousin, the nearby Ellendale mine, specimens...lamproites is much smaller, they do host the Argyle mine and notable subeconomic occurrences in the United |  | 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) | | Melbourne, Parkville, 3010 Victoria, Australia 6 Central Science Laboratory, University of Tasmania, Hobart...RI Gittins, 1974) and in an altered kimberlite breccia from Wajrakarur (India; Parhasarathy et al., 2002)...(possibly pyroclastic) unit B1, the kimberlite breccia B2 which envelops unit B1, and the hypabyssal kimberlite...fresh sills in the ‘Water Tunnels’ of the Wesselton mine contain carbonates with SrO and BaO concentrations...ilmenite and olivine grains of Bultfontein polymict breccia CE xenoliths (Giuliani et al., 2012, 2013, 2014b) |  | Giuliani, A., Phillips, D., Fiorentini, M.L., Kendrick, M.A., Maas, R., Wing, B.A., Woodhead, J.D., Bui, T.H., Kamenetsky, V.S. (2013) Mantle oddities: A sulphate fluid preserved in a MARID xenolith from the Bultfontein kimberlite (Kimberley, South Africa) Earth and Planetary Science Letters, 376. 74-86 doi:10.1016/j.epsl.2013.06.028 | Journal (article/letter/editorial) | | inclusions hosted by ilmenite in a mantle polymict breccia (Giuliani et al., 2012). These occurrences attest...veins, the thin sections were examined at the Central Science Laboratory, University of Tasmania, using...Goemann for assistance with FE-SEM work at the Central Science Laboratory, University of Tasmania. This...basalt xenoliths in the B/K9 kimberlite, Damtshaa, Botswana: Insights into hydrothermal metamorphism...Hancox, P.J., 2005. The Karoo basins of south-central Africa. J. Afr. Earth Sci. 43, 211–253. Chambefort |  | Abersteiner, Adam, Kamenetsky, Vadim S., Goemann, Karsten, Golovin, Alexander V., Sharygin, Igor S., Giuliani, Andrea, Rodemann, Thomas, Spetsius, Zdislav V., Kamenetsky, Maya (2019) Djerfisherite in kimberlites and their xenoliths: implications for kimberlite melt evolution. Contributions to Mineralogy and Petrology, 174 (1) doi:10.1007/s00410-018-1540-8 | Journal (article/letter/editorial) | | University of Tasmania, Hobart, TAS 7001, Australia 2 Central Science Laboratory, University of Tasmania, Hobart...Three mantle-derived xenoliths obtained from the mine dumps of the Bultfontein (Group I, or archetypal)...(LIMA)-bearing spinel lherzolite and a polymict breccia (i.e. ‘failed’ kimberlite intrusion; see Lawless...clinopyroxene and minor Fe–Ni (± K– Cl) sulphides Polymict breccia Contains preferentially orientated lenses of DU-1...secondary (i.e. kimberlitic) perovskite. In polymict breccia sample DU-1, djerfisherite was identified as a |  | | Book (volume) | | W. Skinner, and Jv. A. Robey The Victor Diamond Mine, Northern Ontario, Canada: Successful Mining of...Eastern Dharwar Craton, Undraldoddi Area, Raichur District, Karnataka, India . . . . . . . . . . . . . ....Ali, J. Zhu, and P. Ellemers Kimberlites from Central Angola: A Case Study of Exploration Findings ....Geology and Evaluation of the K2 Kimberlite, Koidu Mine, Sierra Leone, West Africa . . . . . . . . . . ...Baffin Island, Nunavut: Canada’s Newest Diamond District . . . . . . . . . . . . . . . . . . . . . . . |  | | Book | | of Canada: A Synthesis of Major Deposit-types, District Metallogeny, the Evolution of Geological Provinces...avec l'editeur. Gold-rich specimen fro1n the Don,e Mine, Tim1nins, Ontario that was presented to GSC in...of Canada A Synthesis of Major Deposit-Types, .District Metallogeny, the Evolution of Geological Provinces...of Canada: A Synthesis of Major Deposit-Types, District Metallogeny, the Evo lution of Geological Provinces...Massive Sulphide Deposits of the Finlayson Lake District, Yukon Jan Pete,; Daniel Layton-Matthews. Stephen |  | | Report (volume) | | nanometer scale (Mao and Boulard 2013, Chapter 13). A central aspect of Earth’s carbon cycle—one fundamentally...ecosystems (Colwell and D’Hondt 2013, Chapter 17). Central to any discussion of deep biology is energy flow...Several chapters in this volume allude to the central roles played by plate tectonics in Earth’s carbon...20-carat Eureka diamond by children playing in a dry central South African streambed in 1866, and the even more...ophiolite-hosted Code Locality Canada C1 Jeffrey Mine, Quebec Carbides* 15 Type** Associated Phases*** |
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