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Acanthite with SIlver and Chalcocite

#PD31816
SOLD
ACANTHITE from Butte dist., Silver Bow Co., Montana, United States - PD31816
ACANTHITE from Butte dist., Silver Bow Co., Montana, United States - PD31816

Acanthite with SIlver and Chalcocite

#PD31816
Availability
Sold
Size
4 x 3.5 x 2.5 cm - Miniature 
Formula
Ag2S (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States
Tagged
sulfide

The specimen is a nice chunk of Butte Silver/copper ore. Silver can be seen in one of the photographs. The rest of the specimen is sectile acanthite and blades of Chalcocite.

Acanthite

Formula
Ag2S 
Crystal System
Monoclinic 
Crystal Habit
Blocky, Skeletal, Arborescent 
Cleavage
poor to none 
Luster
Metallic 
Color
lead gray, gray, iron black 
Streak
shining black 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2-2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
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On Dakota Matrix
Other Available Acanthite
WebMineral
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Mindat
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