Lac de Gras kimberlite field

Diavik Diamond Mine consists of three diatremes associated with the Lac de Gras kimberlite field

Fort à la Corne-Lac de Gras kimberlites

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

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

References

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. Zlotnikoc, Dan (November 2008). "A northern star - Canada's first diamond mine celebrates a milestone". CIM Magazine. 3 (7). Montreal, Quebec, Canada: 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.