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SV459 - Copper with Prehnite Osceola Mine, Houghton Co., Michigan, USA cabinet - 9.5 x 8.5 x 7.5 cm Massive Calcite, Prehnite and Copper with a crystallized vug of the same species. There is a large 4cm Copper crystal in the vug as well as a mass of Prehnite that rises up and contains 2 well formed Copper crystals to 2.5cm wide. ©2010-2018 Marin Mineral |