Copper Mass
Copper Mass from Caledonia Mine, Ontonagon Co., Michigan
Collection Hershel Friedman
Description This is a distorted crystal mass of Copper with typical green tarnish stains, from the famous Keweenaw Peninsula of Michigan.
Locality Caledonia Mine, Ontonagon Co., Michigan
Dimensions 5.0 x 4.0 x 2.2 cm
Specimen Grade B
Photograph © Hershel Friedman

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