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Ekati Diamond Mine

Coordinates: 64°42′49″N 110°37′10″W / 64.71361°N 110.61944°W / 64.71361; -110.61944
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This is an old revision of this page, as edited by 216.126.100.27 (talk) at 18:22, 12 March 2017 (The mine has recently announced that they will remain in operation for another ~20 years. Previous information was incorrect.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Ekati Diamond Mine
Ekati mine aerial view, August 2010. Four open pits on four kimberlite pipes may be seen, along with the Ekati airport.
Location
Ekati Diamond Mine is located in Canada
Ekati Diamond Mine
Ekati Diamond Mine
Location in Canada
LocationLac de Gras
TerritoryNorthwest Territories
CountryCanada
Coordinates64°42′49″N 110°37′10″W / 64.71361°N 110.61944°W / 64.71361; -110.61944
Production
ProductsDiamonds
History
Opened1998
Owner
CompanyDominion Diamond Corporation (80%),
Charles E. Fipke (10%),
Stewart Blusson (10%)
Websitewww.ddcorp.ca
Metasequoia wood from 53 million years BP, recovered from a kimberlite pipe at Ekati Diamond Mine.

The Ekati Diamond Mine ("Ekati") is Canada's first surface and underground diamond mine.[1] It is located 310 km (190 mi) north-east of Yellowknife,[2] Northwest Territories, and about 200 km (120 mi) south of the Arctic circle, near Lac de Gras. Ekati is a joint venture between Dominion Diamond Corporation (80%), and the two geologists who discovered kimberlite pipes north of Lac de Gras, Chuck Fipke and Stewart Blusson each holding a 10% stake in the mine.[1]

History

The first volcanic pipe found in the Lac de Gras region was the Point Lake kimberlite,[3] discovered by Chuck Fipke and Stewart Blusson who had been prospecting in the region for almost ten years, having found kimberlite indicator minerals as early as 1985.[1] The Point Lake kimberlite was determined to be uneconomic, but its discovery precipitated one of largest staking rushes in mining history, covering most of the area between Yellowknife and the Arctic coast.[4] There are 156 known kimberlite pipes within the Ekati block of claims, including the Point Lake pipe. Ekati officially began operations on October 14, 1998, and was operated by BHP Billiton Canada Inc., a part of the BHP Billiton Group, the world's largest diversified resources company.

The recent discovery of new viable kimberlite pipes will be mined using open pit methods and are named Jay, and Sable. Also, underground mining of the kimberlite structure that is currently being mined at Misery pit will commence in 2020. Ekati diamond mine, which is currently operated by Dominion Diamond is scheduled to remain operational until 2035.

On November 13, 2012, CBC reported that the Harry Winston Diamond Corporation (now: Dominion Diamond Corporation), 40% owners of Diavik Diamond Mine, would buy Ekati for US$500 million. The current employees of BHP Billiton at the site in Yellowknife and Antwerp will continue to be employed by Harry Winston.[2]

Geology

Diamonds at the Ekati site are found in 45- to 62-million-year-old kimberlite pipes (Creaser et al., 2004) of the Lac de Gras kimberlite field, most of which lie underneath shallow lakes.

Mining and marketing

Between 1998 and 2009, the mine has produced 40 million carats (8,000 kg or 17,637 lb) of diamonds out of six open pits.[1] As the high grade ore close to surface was depleted, development was completed to access the ore utilizing underground methods. Currently, there is one underground operation (Koala) with open-cut mining occurring in Fox Pit.[1] The mine's current annual production is estimated to be approximately 7.5 million carats (1,500 kg or 3,307 lb) of diamonds.[5]

Ekati supplies rough diamonds to the global market through its sorting and selling operations in Canada, Belgium, and India.[6]

See also

Footnotes

  1. ^ a b c d e Zlotnikoc, Dan (November 2008). "A norther star - Canada's first diamond mine celebrates a milestone". CIM Magazine. 3 (7). Montreal, Quebec, Canada: CIM Magazine: 40–43. ISSN 1718-4177.
  2. ^ a b Harry Winston buying Ekati mine for $500M US
  3. ^ Erlich, E., Dan Hausel, W. (2002) Diamond deposits: origin, exploration, and history of discovery. Society for Mining, Metallurgy, and Exploration, Inc. (SME), Littleton, CO.
  4. ^ The Northern Miner 1998 "Mining Man of the Year" award to Hugo Dummett
  5. ^ Zimnisky, Paul (January 22, 2013). "The state of 2013 global rough diamond supply". Resource Investor. Retrieved February 4, 2013.
  6. ^ "About Us". Retrieved 2013-08-09.

References

Further reading

  • Kevin Krajick, Barren Lands: An Epic Search for Diamonds in the North American Arctic. 2001, Freeman/Henry Holt, ISBN 0-7167-4026-5. Review at Smithsonian Magazine
  • Chapter 17. Diamond Exploration – Ekati and Diavik Mines, Canada by Charles J. Moon (Google Books preview )in Charles J. Moon, M. K. G. Whateley, Anthony M. Evans, Introduction to Mineral Exploration, 2nd Edition. 2006,Wiley-Blackwell. ISBN 978-1-4051-1317-5.
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