Detailed information
Species
Native Copper, var. Copper Skull, Native Silver
Dimensions
117 x 158 x 84
mm
Weight
1296 g
Locality
Centennial Mine Centennial Heights, Calumet Township Houghton County, Michigan, USA
Condition
No recorded repairs
Centennial mine at Calumet Township in the heart of copper country in Houghton County, Michigan is famous for 'Copper Skulls' - Native Copper casts around/after long since gone conglomerate pebbles and cobbles. This fine large example is like a baseball glove, only a little heavier! It has a rough, hackly texture, and still contains many smaller rock clasts embedded within it. The Native Copper has a variable tarnish, some bright metallic, other areas much duller, and with some small inclusions of Native Silver. Ex Nick Hawes collection.