White Pine Mine, Ontonagon Co., Michigan, USA
Small Cabinet, 6.5 x 1.9 x 1.2 cm
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Exhibiting parallel growth are two doubly-terminated, elongated, tetrahexahedral, copper crystals to 5.1 cm in length. A bit of matrix adheres to the base of the smaller crystal and both have a superb, reddish-copper colored patina.