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1 item @ $25.00   30:00
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Bornite

#AH55407
SOLD
Bornite from Magma mine, Pinal Co., Arizona, United States - AH55407
Bornite from Magma mine, Pinal Co., Arizona, United States - AH55407

Bornite

#AH55407
Availability
Sold
Size
5.5 x 3.5 x 4 cm - Sm Cabinet 
Formula
Cu5FeS4 (RRUFF)
Locality
Magma mine, Pinal Co., Arizona, United States
Tagged
sulfide , copper , ore specimen

I've said it before, the basic copper sulfides are gorgeous in color. This specimen on the fresh surface is purplish bronze color. In the last photo, you can see how the Bornite will oxidize and turn purple and blues and become iridescent.

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
Arnold G Hampson Collection
Mineralpedia
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Other Available Bornite
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