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Enargite with Quartz

#45871
SOLD
Enargite from Butte dist., Silver Bow Co., Montana, United States - 45871
Enargite from Butte dist., Silver Bow Co., Montana, United States - 45871

Enargite with Quartz

#45871
Availability
Sold
Size
19 x 6.5 x 4 cm - Cabinet 
Formula
Cu3AsS4 (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States
Tagged
sulfide , copper

This is a large 19cm cabinet museum quality specimen. If you collect Butte, this is a great specimen. Featured of course are the silvery black striated 9mm Enargite crystals, which are distinct and well-formed. They are classic Enargite amongst good 5-13mm Pyrite crystals.

Enargite

Formula
Cu3AsS4 
Crystal System
Orthorhombic 
Crystal Habit
Euhedral Crystals, Massive - Granular, Prismatic 
Cleavage
Perfect, Distinct, Distinct 
Luster
Metallic 
Color
steel gray, blackish gray, violet black 
Streak
black 
Class
Orthorhombic - Pyramidal 
Fracture
Uneven 
Hardness
3 

Data courtesy of Webmineral.

Collection
Chris van Laer Collection
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