What is Popigai crater?
[[File:Popigai crater russia.jpg|thumb|250px|The Popigae crater]] '''Popigai crater''' is an [[impact crater]] in [[Siberia]], [[Russia]]. It was formed when a [[meteor]] struck the Earth about 35 million years ago. There are many [[diamond]]s under the crater. The diamonds were made when the high pressure of the meteor hitting the ground compressed the [[graphite]]. Even though there are many diamonds, [[mining]] is not considered to be profitable. That is partly because the mine is in a place far from people.<ref>{{cite web|url=http://geology.com/articles/popigai-crater-diamonds|title=World's largest diamond deposit: Popigai Crater, Russia |work=geology.com|accessdate=1 February 2015}}</ref> Perhaps it is more because its diamonds are only industrial quality, and they can be made more cheaply by artificial means. == References == {{reflist}} {{-}} {{geo-stub}} [[Category:Impact craters]] [[Category:Siberia]]