- Miniature, 4.6 x 2.3 x 1.8 cm
- Central Mine, Keweenaw County, Michigan, USA
- Ex. Ernest Schlichter
A rich blue green patina of bornite has covered the copper crystals, to 2.2 cm in length, in this cluster. On the back side is a shallow vug replete with a druse of gemmy green epidote. Unusual patina!