- Chalcocite, Quartz
- Miniature, 4.7 x 4.0 x 2.7 cm
- Butte, Butte District, Silver Bow Co., Montana, USA
An excellent and showy 1.4 cm cluster of sharp, matte-finish, dark brown chalcocite crystals attractively set on milky quartz matrix from the famous Butte District of Montana. Sharp crystals of chalcocite from Butte are relatively uncommon and this is a good one. Ex. Phil Scalisi and George Elling Collections.