Graphite
Crystal Graphite Mine, Ruby Mountains Region, Dillon Mining District, Beaverhead County, Montana, USA
Graphite specimens are very rare from this extinct Montana underground graphite mine. A rich and impressive large vein of intergrown clusters of highly lustrous, steel-gray, lamellar graphite plates with typical greasy feel rests on the sculptural gneiss matrix. From an old collection that turned up in the American West, this is a rare; perhaps ...
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