2007 YellowknifeTechnical Program & DeBeers Just a little reminder to all the newbie investors out there Here is factual information You your self can double check it through the links provided DO YOUR OWN RESEARCH AND DOUBLE CHECK EVERY/ANYTHING YOU READ ON ANY OF THESE BULLBOARDS make Google and YaHoo your two best research partners if a question arises DON'T BE AFRAID TO ASK THE AUTHOR OR CONTACT THE COMPANY IT SELF any Company worth it's salt will have a decent IR(investor relations)Dept
Again good luck and Happy investing.
McM.
https://gac.esd.mun.ca/GAC_2007/search_abs/sub_program.asp?sess=98&form=10&abs_no=261
Yellowknife 2007
Technical Program
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SS8: Advances in Kimberlite Geology and Diamond Genesis
Organizers / Organisateurs: Hamish Sandeman (NTGO) and Thomas Stachel (University of Alberta)
Room / Salle: Capitol 1
Presenter: Hamish A. Sandeman
Unique garnet compositions from the Mud Lake Kimberlite, SW Slave Province, NWT: an occurrence of rare, high Cr-Ca green garnets
Sandeman, H.A., Northwest Territories Geoscience Office, Box 1500, 4601 52nd Avenue, Yellowknife, NT, X1A 2R3 hamish_sandeman@gov.nt.ca, Barnett, R.L., R.L. Barnett Geological Consulting Inc., London ON N6P 1P2, Barry Laboucan, A., Snowfield Development Corporation, 508 - 675 West Hastings St. Vancouver BC V6B 1N2, Flemming, R., Department of Earth Sciences, University of Western Ontario, London, ON, N6A 5B7, and Tubrett, M., INCO Innovation Centre, Memorial University of Newfoundland, St. John’s, NL, A1B 1X5
The Ticho Diamond Project, operated by Snowfield Development Corporation, is located ca. 50 km south-southeast of Yellowknife on the eastern shore of Yellowknife Bay. Earlier historical work in the area includes regional till sampling programs conducted by prospector David Smith, industry and the Geological Survey of Canada. This work reports significant new data from the diamondiferous Mud Lake Kimberlite Sill complex.
Regional till samples revealed elevated counts of kimberlitic indicator minerals and, during follow-up investigations in 2003, Snowfield discovered the Mud Lake kimberlite. The kimberlite comprises a NNE-trending, SW dipping sill-like body, generally continuous along strike for at least 800 m and, although bifurcating, ranges in thickness from <1 to 7 m. The freshest portions of the kimberlite consist of: abundant (45 volume %, ≤5 mm) serpentinized olivine grains along with less common, phlogopite (<5%, ≤5 mm) and picroilmenite (<2%, ≤5 mm) grains. Pyrope garnet, typically with kelepyhtic rims, is common and set in a fine-grained groundmass of serpentine, carbonate and opaque minerals. Paragenetically late deposition of hematite and corresponding reddening of the kimberlite and country rocks is widespread. Locally, breccia zones are observed at the structural top of the kimberlite and contain up to 90% rounded to angular country rock xenoliths in a carbonate matrix. Caustic fusion analyses on drill core from the sill has, recovered promising macro diamond contents, the two largest stones being larger that 2 mm in their longest dimension.
Electron microprobe data for garnets from the kimberlite reveals a broad array of mantle-derived garnets with very common G9 (28.6 vol. %), G3 (19.5 %), G4 (15.6 %), rare G10 (1.8 %) and G0 (< 0.1 %) garnets along with a major proportion of G12 (34.4 %) garnets. A minor proportion of these G12 garnets are green, high-Cr2O3 and high-CaO grains with CaO ranging from 12.83-21.47 wt. % with corresponding Cr2O3 from (7.01-17.80) and plot in the miscibility gap between ugranditic and pyralspitic garnets. Three of the green garnets have unit cell lengths of a= 11.700, 11.710 and 11.771Å (determined via µXRD) and similarly plot in the gap between known garnet cell dimensions along the solid solution (11.67-11.77Å). There is a remarkable correlation of these green garnets and diamonds in every diamond bearing kimberlite were green garnets have been identified. Green garnets with these compositions have been found in several diamond bearing kimberlites that have been mined including Premier in South Africa and Udachnaya in Russia. These unique diamond indicator minerals from the Mud Lake kimberlite represent the first publicly known green, high-Ca-Cr garnets in the Slave Province from a bedrock source
DeBeers Diamond Company (a good read.)
"DeBeers is a company that manages approximately 91% of the world diamond production and/or distribution of diamond rough (uncut gems). DeBeers has controlled the diamond market for approximately 200 years. DeBeers recently bought back their stock and moved from a publicly traded company to private operation....more: https://www.niceice.com/contents/debeers_diamond_company.html