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0 item @ $0.00  

Bornite

#RW50101

Bornite

#RW50101
Availability
Sold
Size
7 x 6 x 5 cm - Sm Cabinet 
Formula
Cu5FeS4 (RRUFF)
Locality
Leonard mine, Butte dist., Silver Bow Co., Montana, United States
Tagged
ore mineral , sulfide , copper

Almost always massive. Fresh is copper red to pinchbeck brown tarnishing to a purple iridescence. This specimen is a chunk of sulfide Bornite ore.

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

Data courtesy of Webmineral.

Collection
Robert J. Waidler Collection
Mineralpedia
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