Locality: Seneca mine, Seneca, Houghton County, Michigan USA
Dimensions: 15 cm x 13 cm x 7.5 cm.
This is a choice large group of sharp, well-formed blocky dodecahedral native copper crystals to over 2 cm on basalt matrix with epidote, from the Seneca mine, Seneca, Houghton County, Michigan USA. Large, 3-dimensional, and showy this is a superb Michigan copper from a classic locality!! Mark Cross photo.
