Native Silver/Copper Halfbreed – Caledonia Mine, Michigan


1 in stock


This native copper/silver halfbreed is from the Caledonia Mine, Mass City, Ontonagon County, Michigan, USA. This mine produced millions of pounds of copper and contained 20 different minerals including native copper and silver. This specimen is a mix of both metals with some basalt matrix attached. It measures 58 x 36 x 34 mm.

Additional information

Weight9 oz

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