Bornite coating Pyrite with Quartz
SOLD
Bornite coating Pyrite with Quartz
- Sold
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- Availability
- Sold
- Size
- 5.5 x 4.5 x 1.5 cm - Sm Cabinet
- Formula
- Cu5FeS4 (RRUFF)
- Locality
- Stewart mine, Butte, Silver Bow Co., Montana, United States
- Tagged
- sulfide
An awesome specimen of iridescent Bornite coating octahedral Pyrite crystals to 1cm with micro crystals of Quartz. Look close at the photos, these are actually cubo-octahedral crystals. According to Jenkins & Lorengo (Min. Record v. 33, n. 1 2002), Pyrite is rather abundant at Butte but they also report octahedral crystals as rare in Main Stage veins. The Stewart is a Main stage Anaconda vein.
Bornite
- Formula
- Cu5FeS4
- Crystal System
- Orthorhombic
- Crystal Habit
- Massive - Granular, Reniform, Granular
- Cleavage
- Imperfect, None, None
- Luster
- Metallic
- Color
- copper red, bronze brown, purple
- Streak
- grayish black
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Conchoidal
- Hardness
- 3
Data courtesy of Webmineral.
- Collection
- Phillips Collection
- Mineralpedia
- View Bornite
- On Dakota Matrix
- Previously Sold Bornite
- On Dakota Matrix
- Other Available Bornite
- WebMineral
- View Bornite
- Mindat
- View Bornite
