One of the more interesting rock formations I sell in my shop is stromatolite, aka algae jasper. A very popular source is the Mary Ellen mine, now underwater. This past summer a customer took photos of the mine pit and and sent them to me. I told him what I knew, that my family signed waivers to collect specimens so many years ago. He happens to have the same surname as our MN U.S. senator and there IS a family connection.

Posted by oh5/ojhoff
at 11:01 AM CDT
Updated: 09/30/13 2:08 PM CDT
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Updated: 09/30/13 2:08 PM CDT
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