- Enargite, Pyrite
- Thumbnail, 1.8 x 1.7 x 0.9 cm
- Butte, Butte District, Silver Bow Co., Montana, USA
Enargite is a signature mineral species from the Butte District. A tabular, lustrous and striated enargite crystal is nicely set amidst mirror-bright, brass-yellow pyrite crystals on this excellent, old-time, combination thumbnail. Ex. Jaime Bird Collection. Classic material.