Central Dakota Gem & Mineral Society

Bismarck, ND

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July 10 Harmon Lake

Come join us on July 10th, 1pm, up at Harmon Lake to learn about Cannonball Concretions.  Follow 1806 north of Mandan, about 11 miles.  Shelter 2.

HarmonLake

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This entry was posted in News on June 3, 2016 by NDrockclub.

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