Small Cabinet, 6.8 x 6.0 x 4.8 cm
Minesota Mine, Rockland, Ontonagon Co., Michigan, USA

A RARE, very LARGE copper cube, 1.6 x 1.6 cm, with a nice patina and with copper and matrix from the famous Minesota Mine of Michigan. The large crystal could be opened up and exposed with a little bit of work. 6.8 x 6.0 x 4.8 cm