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0 item @ $0.00  

Covellite with Pyrite

#44828

Covellite with Pyrite

#44828
Availability
Sold
Size
10 x 6.5 x 3 cm - Cabinet 
Formula
CuS (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States
Tagged
sulfide , copper

Plates of dark metallic purple to blue Covellite to 2cm. In one area there are 8mm well-formed crystals. This is a pretty good specimen of material which is increasingly hard to obtain.

Covellite

Formula
CuS 
Crystal System
Hexagonal 
Crystal Habit
Platy, Foliated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
indigo blue, light blue, dark blue, black 
Streak
black gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle 
Hardness
1.5-2 

Data courtesy of Webmineral.

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