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Covellite with Pyrite

#62064
SOLD
Covellite from Butte dist., Silver Bow Co., Montana, United States - 62064
Covellite from Butte dist., Silver Bow Co., Montana, United States - 62064

Covellite with Pyrite

#62064
Availability
Sold
Size
8.5 x 5.5 x 2.5 cm - Sm Cabinet 
Formula
CuS (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States
Tagged
ore mineral , sulfide , copper

A juicy specimen loaded with 66% copper and is a beautiful indigo blue color. Covellite is formed in supergene of copper porphyry deposits and hydrothermal deposits, such as Butte, Montana. There is also Pyrite in the matrix giving it a nice contrasting appearance.

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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