Lac de Gras kimberlite field explained

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, has produced 40000000carat of diamonds out of six open pits between 1998 and 2008,^[3] while Diavik to the southeast has produced 35400000carat of diamonds since its foundation in 2003.^[4]

See also

• List of volcanoes in Canada
• Volcanism of Canada
• Volcanism of Northern Canada

Notes and References

1. https://archive.today/20120713021333/http://petrology.oxfordjournals.org/cgi/content/full/45/9/1725 Intensive Variables in Kimberlite Magmas, Lac de Gras, Canada and Implications for Diamond Survival
2. http://www.northarrowminerals.com/s/LacdeGras.asp North Arrows Minerals Inc.: Lac de Gras Project
3. Zlotnikoc. Dan. November 2008. A northern star - Canada's first diamond mine celebrates a milestone. CIM Magazine. 3. 7. 40–43. Montreal, Quebec, Canada. 1718-4177.
4. News: Diavik diamond mine in N.W.T gets new development money . . 2009-01-25 . 2007-11-26.