Copper with Calumetite
specimen number:
1302084
location:
Centennial mine, Calumet, Houghton Co., Michigan, USA
description:
A superb branching grouping of crystallized native copper. Some of the copper crystals measure to 5.0 cm in size. Light blue crystalline calumetite is scattered throughout. In terrific condition.
Size: 17.5 x 9.0 x 2.0 cm (large-cabinet)
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