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Chalcocite

#36827
SOLD
Chalcocite from Flambeau mine, Ladysmith, Rusk Co., Wisconsin, United States - 36827
Chalcocite from Flambeau mine, Ladysmith, Rusk Co., Wisconsin, United States - 36827

Chalcocite

#36827
Availability
Sold
Size
3 x 3 x 2.5 cm - Thumbnail 
Formula
Cu2S (RRUFF)
Locality
Flambeau mine, Ladysmith, Rusk Co., Wisconsin, United States
Tagged
sulfide

Iridescent Chalcocite composed of an aggregate of several formless or semi-formless crytsals.

Chalcocite

Formula
Cu2S 
Crystal System
Monoclinic 
Crystal Habit
Massive, Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
blue black, gray, black, black gray, steel gray 
Streak
grayish black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5-3 

Data courtesy of Webmineral.

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