Native Copper: Central mine, Central, Keweenaw County, Michigan USA

Description

Species: Native Copper

Locality:Central mine, Central, Keweenaw County, Michigan USA

Dimensions: 17 x 13.5 x 9 cm.

The Central mine in Keweenaw County, Michigan is perhaps best-known for its superb and distinctive specimens of tightly-intermeshed spinel twinned copper crystals which form sometimes large “herringbone” aggregates without matrix. This is a wonderful large cabinet-size example of this type of Copper crystallization from the Central mine, which is highly 3-dimensional and can be displayed nicely in a variety of orientations. Likely collected in the late 19th century, this fine specimen features sharp, well-formed spinel-twinned copper crystal to over 4.5 cm forming 3-dimensional aggregates. An impressive, large, complex crystallized copper from a classic locality. Annette Slade photo.