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1 item @ $125.00  

Enargite with Chalcocite & Gypsum var. selenite

#PD32434

Enargite with Chalcocite & Gypsum var. selenite

#PD32434
Availability
Sold
Size
5 x 4 x 3 cm - Miniature 
Formula
Cu3AsS4 (RRUFF)
Locality
Butte dist., Silver Bow Co., Montana, United States
Tagged
sulfide

Highly lustrous, reflective and brilliant short prismatic Enargite crystals to 3mm throughout this specimen with nice micro clear selenite crystals. According to Jenkins & Lorengo (Min. Record v. 33, n. 1 2002) Enargite was a fairly common mineral in the central and intermediate zones at Butte and accounted for nearly 20 to 40% of the underground ore production.

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

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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