Osceola Mine, Shaft #20, Houghton County, Michigan, USA
Small Cabinet, 6.0 x 3.9 x 2.3 cm
Ex. Ernest Schlichter
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Bright and lustrous with a great copper color, this specimen is composed of two spinel twins, to 4 cm in length, that were formed by crystalline aggregates. The Osceola mine is known for its weird copper crystal habits, and you can see why.