Northwestern Mine, Central, Keweenaw County, Michigan, USA

Ex. A. E. Seaman Mineral Museum

Well formed Copper crystals with some interesting rounded habits. Of particular note, are the two parallel crystals which are connected to form a U shape. The Northwestern Mine was a fissure mine and one of the first developed in the Keweenaw (1848).

5.1 x 3.1 x 1.8 cm

Sold Specimen retained as part of the Minerals Sold But Not Forgotten Galleries