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0 item @ $0.00  

Bornite

#PD48045

Bornite

#PD48045
Availability
Sold
Size
9 x 6 x 4 cm - Sm Cabinet 
Formula
Cu5FeS4 (RRUFF)
Locality
Långban, Filipstad, Värmland, Sweden
Tagged
sulfide , copper

On the side of this specimen is what looks like sheet Silver. After poking and scratching at this stuff, it obvious it was not. But I had no idea what it was as it carried a tarnish and was goldish iridescence in places. EDS has shown it to be Bornite, with much more Copper than Iron. I can't rule out Chalcopyrite though, since it carries that goldish color. There is also Magnetite in the green, chloritic schist. 

EDS Confirmed

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
Don Phillips Collection
Special Info
EDS Confirmed
Mineralpedia
View Bornite
On Dakota Matrix
Previously Sold Bornite
On Dakota Matrix
Other Available Bornite
WebMineral
View Bornite
Mindat
View Bornite

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