Native Copper: Lake Superior Copper District, Houghton County, Michigan, USA

Description

Species: Native Copper

Locality: Lake Superior Copper District, Houghton County, Michigan, USA

Size: 10.5 x 6 x 2 cm.

Ex. Andrew K. Ford Minerals

An excellent group of very sharp, aesthetically-branching spinel-law twinned copper crystals with an attractive chocolate-brown patina from Michigan’s Upper Peninsula Copper District. Unusually-sharp and complex spinel law style copper crystallization for Michigan copper. Mark Cross photo. Classic!