 | | Journal (article/letter/editorial) | | perovskite from kimberlites of the Lac de Gras field (Northwest Territories, Canada) A. R. CHAKHMOURADIAN* AND...Ontario, Canada P7B 5E1 ABSTR ACT In hypabyssal and crater-facies kimberlites of the Lac de Gras kimberlite...phlogopite, baryte, Fe-Ni sulphides, ilmenite, diopside and zircon. Uncommon accessory phases found in...perovskite. The compositional variation of the Lac de Gras perovskite can be adequately characterized in...kimberlite, Lac de Gras kimberlite  eld, Canada. Introduction THE discovery of the Lac de Gras kimberlite |  | | Report (chapter) | | for diamond exploration in glaciated terrain in Canada M. B. McClenaghan and B. A. Kjarsgaard Geological...in Canada M. B. M c C L E N A G H A N & B. A. K J A R S G A A R D Geological Survey o f Canada, 601...601 Booth Street, Ottawa, Ontario K 1 A OE8, Canada (e-mail: bmcclena@nrcan.gc.ca) Abstract: This paper...exploration techniques used in the glaciated terrain of Canada, focusing on indicator mineral methods and till...sediments and vegetation. Diamond exploration in Canada focuses on kimberlite, the primary host rock for |  | Kjarsgaard, B.A., Pearson, D.G., Tappe, S., Nowell, G.M., Dowall, D.P. (2009) Geochemistry of hypabyssal kimberlites from Lac de Gras, Canada: Comparisons to a global database and applications to the parent magma problem. Lithos, 112. 236-248 doi:10.1016/j.lithos.2009.06.001 | Journal (article/letter/editorial) | | Geochemistry of hypabyssal kimberlites from Lac de Gras, Canada: Comparisons to a global database and applications...a b c Geological Survey of Canada, 601 Booth Street, Ottawa, ON, Canada K1A 0E8 Earth Sciences, Durham...Sciences, University of Alberta, Edmonton, AB, Canada T6G 2E3 a r t i c l e i n f o Article history:...geochemical analyses of hypabyssal kimberlite from the Lac de Gras ïŹeld. Screens using Yb versus Al2O3 and ln Si/Al...of peridotite contamination. We utilize the Lac de Gras data suite to calculate, by two different methods |  | | Journal (article/letter/editorial) | | Canil Ă Jon A. Carlson Dissolution forms in Lac de Gras diamonds and their relationship to the temperature...phenocrysts in several kimberlites from Lac de Gras, Northwest Territories, Canada. The T and fO2 values calculated... The T and fO2 vary between kimberlites from northwest and southeastern clusters within 150C and 1 log...Victoria, Victoria, 3800 Finnerty Rd, BC V8W 3P6, Canada E-mail: yana@uvic.ca Tel.: +1-250-4724181 Fax:...Carlson BHP Billiton Diamonds Inc, Kelowna, BC, Canada higher in kimberlites with lower fO2, conïŹrming |  | Bussweiler, Y., Stone, R. S., Pearson, D. G., Luth, R. W., Stachel, T., Kjarsgaard, B. A., Menzies, A. (2016) The evolution of calcite-bearing kimberlites by melt-rock reaction: evidence from polymineralic inclusions within clinopyroxene and garnet megacrysts from Lac de Gras kimberlites, Canada. Contributions to Mineralogy and Petrology, 171 (7) doi:10.1007/s00410-016-1275-3 | Journal (article/letter/editorial) | | clinopyroxene and garnet megacrysts from Lac de Gras kimberlites, Canada Y. Bussweiler1 · R. S. Stone1 · D....clinopyroxene (Cr-diopside) and garnet (Cr-pyrope) xenocrysts within kimberlites from Lac de Gras (Northwest Territories...Territories, Canada) contain fully crystallized melt inclusions. These âpolymineralic inclusionsâ have previously...their polymineralic inclusions (spongy rims in Cr-diopside, kelyphite in Cr-pyrope) is consistent with measured...inclusions within Cr-diopside record the decarbonation reaction: dolomitic melt + diopside â forsterite + calcite |  | Crawford, Barbara, Hetman, Casey, Nowicki, Tom, Baumgartner, Mike, Harrison, Sara (2009) The geology and emplacement history of the Pigeon kimberlite, EKATI Diamond Mine, Northwest Territories, Canada. Lithos, 112. 501-512 doi:10.1016/j.lithos.2009.06.032 | Journal (article/letter/editorial) | | Pigeon kimberlite, EKATI Diamond Mine, Northwest Territories, Canada Barbara Crawford a,â, Casey Hetman b...4920-52nd Street, Yellowknife, NT, Canada, X1A 3T1 Mineral Services Canada Inc., 205-930 Harbourside Drive...Drive, North Vancouver, BC, Canada V7P 3S7 a r t i c l e i n f o Article history: Received 7 October 2008...kimberlite is located approximately 6 km to the northwest of the Koala cluster of the EKATI Diamond Mine... forming part of the Lac de Gras kimberlite ïŹeld, Northwest Territories, Canada. The EKATI kimberlites |  | Abersteiner, Adam, Kamenetsky, Vadim S., Goemann, Karsten, Kjarsgaard, Bruce A., Fedortchouk, Yana, Ehrig, Kathy, Kamenetsky, Maya (2020) Evolution of kimberlite magmas in the crust: A case study of groundmass and mineral-hosted inclusions in the Mark kimberlite (Lac de Gras, Canada). Lithos, 372. 105690pp. doi:10.1016/j.lithos.2020.105690 | Journal (article/letter/editorial) | | mineral-hosted inclusions in the Mark kimberlite (Lac de Gras, Canada) Adam Abersteiner, Vadim S. Kamenetsky,...mineral-hosted inclusions in the Mark kimberlite (Lac de Gras, Canada), LITHOS (2020), https://doi.org/ 10.1016/j...mineral-hosted inclusions in the Mark kimberlite (Lac de Gras, Canada) Adam Abersteiner1,2*, Vadim S. Kamenetsky1...5 Geological Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada 6 Department of Earth...Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada 7 Jo ur na 3 BHP Olympic Dam, Adelaide, SA |  | Poitras, StĂ©phane P., Pearson, D. Graham, Hardman, Matthew F., Stachel, Thomas, Nowell, Geoff M., Cairns, Scott (2018) Evidence for a 200 km thick diamond-bearing root beneath the Central Mackenzie Valley, Northwest Territories, Canada? Diamond indicator mineral geochemistry from the Horn Plateau and Trout Lake regions. Mineralogy and Petrology, 112. 719-736 doi:10.1007/s00710-018-0641-4 | Journal (article/letter/editorial) | | beneath the Central Mackenzie Valley, Northwest Territories, Canada? Diamond indicator mineral geochemistry...Central Mackenzie Valley (CMV) area of Northwest Territories is underlain by Precambrian basement belonging...Earth Sciences Building, Edmonton, AB T6G 2E3, Canada 2 Department of Earth Sciences, Science Labs... UK 3 Northwest Territories Geological Survey, 5310 44 St, Yellowknife, NT X1A 1K3, Canada Since the...of the first diamondiferous kimberlite in the Lac de Gras area in 1991, more than 300 kimberlites many |  | | Journal (article/letter/editorial) | | Victoria, 3800 Finnerty Road, Victoria, BC V8W 3P6, Canada e-mail: dcanil@uvic.ca Mg# is broader and less...for the xenolithic olivine (dash line). Cpx = Diopside (white circle), Opx = Orthopyroxene (white rhomb)...forsterite, MgKa, TAP; synthetic forsterite, SiKa, TAP; diopside, CaKa, PET; rutile, TiKa, LIF; synthetic rhodonite...used: kyanite, AlKa, TAP; diopside, MgKa, TAP; diopside, SiKa, TAP; diopside, CaKa, PET; rutile, TiKa...crystals around olivine. In WC, WC3, and MON3, diopside crystallizes at 1,280°C and at fO2 above NNO?1 |  | | Journal (article/letter/editorial) | | constitute constitute fragments diamond Slave craton, Canada (modified after Bussweiler et al. [44];ettheir...Polymineralic diamondmine, mine, Slave craton, Canada (modified after Bussweiler al. Figure [44]; their...2002 [47] Diavik A154N kimberlite, Slave craton, Canada cpx Ti-rich phl, ol, cc, Cr-spl, silicate glass...Bussweiler et al., 2016 [44] Lac de Gras kimberlites, Slave craton, Canada cpx, grt inclusions in cpx:...Abersteiner et al., 2019 [46] Lac de Gras & Jericho kimberlites, Slave craton, Canada; Udachnaya-East kimberlite |  | | Journal (article/letter/editorial) | | Abstract The Diavik Diamond Mine in the NWT of Canada has produced in excess of 100 million carats from...Introduction The Diavik Diamond Mine in the NWT of Canada (Fig. 1a, b) has produced in excess of 100 million...com 1 Terram Vero Consulting Inc., Vancouver, Canada 2 Rio Tinto Exploration, Melbourne, Australia...Australia 3 Diavik Diamond Mines Inc., Yellowknife, Canada Archaean plutonic rocks of the central Slave Province...approximately 40% of the dated volcanism in the Lac de Gras area (Sarkar et al. 2015). The average diamond |  | Griffin, W. L., Doyle, B. J., Ryan, C. G., Pearson, N. J., Suzanne, Y. O., Davies, R., Kivi, K., Van Achterbergh, E., Natapov, L. M. (1999) Layered Mantle Lithosphere in the Lac de Gras Area, Slave Craton: Composition, Structure and Origin. Journal of Petrology, 40 (5) 705-727 doi:10.1093/petroj/40.5.705 | Journal (article/letter/editorial) | | 705â727 1999 Layered Mantle Lithosphere in the Lac de Gras Area, Slave Craton: Composition, Structure and... KENNECOTT CANADA EXPLORATION INC., 200 GRANVILLE STREET, VANCOUVER, B.C. V6C 1S4, CANADA 4 KENNECOTT...KENNECOTT CANADA EXPLORATION INC., 1300 WALSH STREET, THUNDER BAY, ONT. P7E 4X4, CANADA RECEIVED APRIL 17...used to map the lithospheric mantle beneath the Lac de Gras area in the central part of the Slave Province...composition and sharply defined structure of the Lac de Gras lithosphere are unique within our current knowledge |  | Nowicki, Tom, Crawford, Barbara, Dyck, Darren, Carlson, Jon, McElroy, Ross, Oshust, Peter, Helmstaedt, Herb (2004) The geology of kimberlite pipes of the Ekati property, Northwest Territories, Canada. Lithos, 76 (1) 1-27 doi:10.1016/j.lithos.2004.03.020 | Journal (article/letter/editorial) | | kimberlite pipes of the Ekati property, Northwest Territories, Canada Tom Nowicki a,*, Barbara Crawford b...Mineral Services Canada Inc., 205-930 Harbourside Drive, North Vancouver, BC, Canada V7P3S7 b BHP Billiton...Kelowna, Canada c BHP Billiton Diamonds Inc., Yellowknife, Canada d Queens University, Kingston, Canada Received...characteristics of kimberlites on the Ekati property, NWT, Canada. To date 150 kimberlites have been discovered on...Keywords: Volcaniclastic; Diamond; Geochemistry; Lac de Gras; Emplacement; Eruption 1. Introduction The Ekati |  | | Journal (article/letter/editorial) | | hypabyssal and pyroclastic units in the Diavik mine, Canada Madeline Tovey, Andrea Giuliani, David Phillips...hypabyssal and pyroclastic units in the Diavik mine, Canada, LITHOS(2020), https://doi.org/10.1016/ j.lithos...hypabyssal and pyroclastic units in the Diavik mine, Canada Madeline Toveya*, Andrea Giuliania,b, David Phillipsa...Street, Vancouver, British Columbia V5K 1R1, Pr Canada. Jo u rn al *Corresponding author; email, toveym@student...South kimberlite pipes in the Diavik Mine (Lac de Gras, Canada). These localities host exceptionally fresh |  | Abersteiner, Adam, Kamenetsky, Vadim S., Goemann, Karsten, Golovin, Alexander V., Sharygin, Igor S., Pearson, D. Graham, Kamenetsky, Maya, Gornova, Marina A. (2019) Polymineralic inclusions in kimberlite-hosted megacrysts: Implications for kimberlite melt evolution. Lithos, 336. 310-325 doi:10.1016/j.lithos.2019.04.004 | Journal (article/letter/editorial) | | Sciences Building, Edmonton, Alberta T6G 2E3, Canada g CE A.P. Vinogradov Institute of Geochemistry...the Diavik, RI Jericho, Leslie (Slave Craton, Canada) and Udachnaya-East (Siberian Craton, Russia) kimberlites...up to 1400 °C; Bussweiler et al., 2016, 2018; NU De Bruin, 2005; Gurney et al., 1979; Harte and Gurney...megacrysts from the Diavik, Jericho, Leslie kimberlites (Canada), and olivine and clinopyroxene megacrysts from...cluster in the Slave Craton (North West Territories, Canada). This kimberlite was NU emplaced in Archean |  | | Journal (article/letter/editorial) | | element compositions of olivine from Lac de Gras kimberlites, Canada Yannick Bussweiler b,â, Stephen F....University of Alberta, 126 ESB, Edmonton, AB T6G 2E3, Canada ARC Centre of Excellence for Core to Crust Fluid...Tertiary/Cretaceous Lac de Gras kimberlite ïŹeld within the Slave craton of Canada. Olivine, constituting...University of Alberta, 126 ESB, Edmonton, AB T6G 2E3, Canada. Tel.: +1 587 335 9030 (cellphone), +1 780 492...located in the Lac de Gras kimberlite ïŹeld within the Slave Province, Northwest Territories, Canada. Major and |  | Masun, K.M., Doyle, B.J., Ball, S., Walker, S. (2004) The geology and mineralogy of the Anuri kimberlite, Nunavut, Canada. Lithos, 76 (1) 75-97 doi:10.1016/j.lithos.2004.03.022 | Journal (article/letter/editorial) | | kimberlite, Nunavut, Canada K.M. Masun *, B.J. Doyle, S. Ball, S. Walker Kennecott Canada Exploration Inc...Suite 354, 200 Granville Street, Vancouver, BC, Canada V6C 1S4 Received 25 June 2003; accepted 6 January...There is some similarity between Anuri and the Lac de Gras kimberlites, with variable types of VK forming...the Rockinghorse joint venture between Kennecott Canada Exploration (Kennecott) and Tahera (Tahera). The...the Slave (Bathurst and McDonald faults), and northwest-southeast compression and northeast-southwest |  | Lim, Emilie, Giuliani, Andrea, Phillips, David, Goemann, Karsten (2018) Origin of complex zoning in olivine from diverse, diamondiferous kimberlites and tectonic settings: Ekati (Canada), Alto Paranaiba (Brazil) and Kaalvallei (South Africa) Mineralogy and Petrology, 112. 539-554 doi:10.1007/s00710-018-0607-6 | Journal (article/letter/editorial) | | diamondiferous kimberlites and tectonic settings: Ekati (Canada), Alto Paranaiba (Brazil) and Kaalvallei (South...tectonic settings, including the Slave craton, Canada (Ekati: Grizzly, Koala), the Brasilia mobile belt...localities: Grizzly and Koala (Ekati property), Lac de Gras, Canada; Limpeza-18 and Tres Ranchos-04, Alto Paranaiba...kimberlites are located in the Lac de Gras kimberlite field of the Slave craton, Canada. The studied samples derive...Ranchos-04 (407/409/004/6) were obtained from the De Beers collection. Samada and New Robinson are two |  | Creaser, Robert A., GrĂŒtter, Herman, Carlson, Jon, Crawford, Barbara (2004) Macrocrystal phlogopite RbâSr dates for the Ekati property kimberlites, Slave Province, Canada: evidence for multiple intrusive episodes in the Paleocene and Eocene. Lithos, 76 (1) 399-414 doi:10.1016/j.lithos.2004.03.039 | Journal (article/letter/editorial) | | the Ekati property kimberlites, Slave Province, Canada: evidence for multiple intrusive episodes in the...Alberta, 126 ESB, Edmonton, AB, Canada T6G 2E3 b Mineral Services Canada, 205-930 Harbourside Drive, North...Vancouver BC, Canada V7P 3S7 c BHP Billiton Diamonds Inc., #8-2604 Enterprise Way Kelowna BC, Canada V1X 7Y5...from the Ekati property of the Lac de Gras region, Slave Province, Canada. These new data show that kimberlite...With the available geochronologic database, Lac de Gras kimberlites with the highest diamond potential |  | Harder, M., Scott Smith, B.H., Hetman, C.M., Pell, J. (2009) The evolution of geological models for the DO-27 kimberlite, NWT, Canada: Implications for evaluation. Lithos, 112. 61-72 doi:10.1016/j.lithos.2009.06.024 | Journal (article/letter/editorial) | | geological models for the DO-27 kimberlite, NWT, Canada: Implications for evaluation M. Harder a,â, B.H...Mineral Services Canada Inc., 205-930 Harbourside Drive, North Vancouver, BC, Canada V7P 3S7 Scott-Smith...Vancouver, BC, Canada V7R 2M9 Peregrine Diamonds Ltd., 201-1250 Homer Street, Vancouver, BC, Canada V6B 1C6...Kimberlite Pyroclastic Economic Evaluation DO-27 Lac de Gras a b s t r a c t This contribution reviews the...kimberlite, located in the Lac de Gras kimberlite province, Northwest Territories, Canada. The DO-27 kimberlite |  | | Journal (issue) | | FEATURE ARTICLE______________ 208 Diamonds in Canada B. A. Kjarsgaard and A. A. Levinson This article...chrysoberyl from Ilakaka, Madagascar âą âTashmarineâ: Diopside from central Asia âą Carved emeralds from an archeological...Massachusetts A. A. Levinson Calgary, Alberta, Canada Christopher P. Smith Lucerne, Switzerland Editor...still a newcomer as a supplier of rough diamonds, Canada is now among the worldâs most important diamond...particular emphasis on the kimberlites of the Northwest Territories. Also discussed are the current manufacturing |  | Porritt, L. A., Cas, R. A. F., Schaefer, B., McKnight, S. W. (2012) TEXTURAL ANALYSIS OF STRONGLY ALTERED KIMBERLITE: EXAMPLES FROM THE EKATI DIAMOND MINE, NORTHWEST TERRITORIES, CANADA. The Canadian Mineralogist, 50 (3) 625-641 doi:10.3749/canmin.50.3.625 | Journal (article/letter/editorial) | | EXAMPLES FROM THE EKATI DIAMOND MINE, NORTHWEST TERRITORIES, CANADA Lucy A. PORRITT§,1, Ray A.F. CAS, and...Koala pipes at the Ekati diamond mine, Northwest Territories, Canada present different styles of alteration...saponite, serpentine (lizardite), and microlitic diopside. The second, at Koala, has an alteration assemblage...University of British Columbia, Vancouver, V6T 1Z4, Canada GEMOC, Earth and Planetary Sciences, Macquarie...from two pipes at the Ekati diamond mine, NWT, Canada. The geology, geochemistry, emplacement processes |  | | Journal (article/letter/editorial) | | University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada EKATERINA P. REGUIR and ROGER H. MITCHELL Department...Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada ABSTRACT The paragenesis and compositional variation...91â3.01Si0â 0.06)O12(F,OH). At Lac de Gras, Northwest Territories, Canada, strontium-apatite and Sr-rich...from the center of spherulites outward. The Lac de Gras apatite is inferred to contain carbon substituting...rocks, kimberlites, Lovozero, Murun, Lac de Gras, Russia, Canada. SOMMAIRE Nous caractĂ©risons la paragenĂšse |  | | Journal (article/letter/editorial) | | analyzed in a coated diamond from the Diavik mine in Canada comprise peridotitic minerals and fluids. The fluids...zoned diamond from the Diavik mine in Lac de Gras, Slave Craton, Canada. Microinclusions in this diamond carry...the three endmembers and their evolution. 2. Lac de Gras diamonds The Diavik mine is composed of four...off East Island beneath the shallow waters of Lac de Gras. The kimberlites are small (< 2000 m2), steep... Over 150 pipes have been identified in the Lac de Gras area, most of those are Cretaceous to Paleocene |  | | Journal (article/letter/editorial) | | Edmonton, Alberta, Canada T6G 2E3 b Geological Survey of Canada, Ottawa, Canada K1A 0E8 Received 21...region of Ontario to Eocene kimberlites in the Lac de Gras field, N.W.T. Based on a compilation of more...more than 4000 km from Somerset Island in northern Canada through the Fort aÌ la Corne field in Saskatchewan...for kimberlites and related rocks, especially in Canada. The number of new kimberlite discoveries continues...(Saskatchewan), Kirkland Lake (Ontario/QueÌbec), Lac de Gras (N.W.T.), Somerset Island (Nunavut), State Line |
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