Lac de Gras kimberlite field

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Diavik Diamond Mine consists of three diatremes associated with the Lac de Gras kimberlite field

The Lac de Gras kimberlite field is a group of Late Cretaceous to Eocene age diatremes in the Northwest Territories, Canada.[1]

The Eocene (ca. 55-50 Ma) age diatremes of the Lac de Gras kimberlite field support two world-class diamond mines called Ekati and Diavik.[2] Ekati, Canada's first diamond mine,[3] has produced 40,000,000 carats (8,000 kg) of diamonds out of six open pits between 1998 and 2008,[3] while Diavik to the southeast has produced 35,400,000 carats (7,080 kg) of diamonds since its foundation in 2003.[4]

See also[edit]

References[edit]

  1. ^ Intensive Variables in Kimberlite Magmas, Lac de Gras, Canada and Implications for Diamond Survival
  2. ^ North Arrows Minerals Inc.: Lac de Gras Project Archived 2010-06-09 at the Wayback Machine.
  3. ^ a b Zlotnikoc, Dan (November 2008). "A northern star - Canada's first diamond mine celebrates a milestone". CIM Magazine. Montreal, Quebec, Canada: CIM Magazine. 3 (7): 40–43. ISSN 1718-4177.
  4. ^ "Diavik diamond mine in N.W.T gets new development money". CBC News. 2007-11-26. Retrieved 2009-01-25.