A 2008 Lake Superior Bonanza of copper crystals Keweenaw Co., MI: fourteenth in a series of articles on the mines and minerals of Michigan's copper country.

Rocks & Minerals | January 1, 2009| | Copyright

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On 11 August 2008 a fabulous find of crystallized copper was made in shallow water on the bottom of Lake Superior near Eagle Harbor, Keweenaw County, Michigan. The near-shore find, now called the Laker Pocket, was located in a fissure vein cutting the Lake Shore Traps; it was discovered by Bob Barron and Karl Peterson, both seasoned scuba divers with twenty years' experience in exploring the depths of Lake Superior. The two-day recovery of the contents of the pocket netted more than three hundred groups of copper crystals ranging in size from ...

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