Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $45.00
- Featured
- Featured in Special Editions
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- Cu5FeS4
- Size
- 6.5 x 6 x 2.7 cm - Sm Cabinet
- Tagged
- sulfide, copper, ore specimen
Ore specimen of Bornite with Pyrite. Butte, of course, being one of the largest Copper producing mines in the world. It is no longer in operation.
Bornite carries up to 63% copper. It is a copper red when fresh, but quickly tarnishes to a dark purplish black and often iridescent.
- Availability
- Available
- Price
- $75.00
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- Cu3AsS4
- Size
- 3.5 x 3 x 1.5 cm - Miniature
- Tagged
- sulfide, copper
Silvery, striated crystals to 5mm.
- Availability
- Available
- Price
- $25.00
- Locality
- Butte dist., Silver Bow Co., Montana, United States
- Formula
- Cu12Sb4S13
- Size
- 2.5 x 2.5 x 2 cm - Thumbnail
- Tagged
- sulfide, copper
Dull gray and coroded Tetrahedrite with micro crystals of Bournonite.
