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Enargite with Pyrite & Quartz

#PD34397

Enargite with Pyrite & Quartz

#PD34397
Availability
Sold
Size
3 x 4 x 4 cm - Miniature 
Formula
Cu3AsS4 (RRUFF)
Locality
Oruro dept., Bolivia
Tagged
sulfide

Several slender black Enargite crystals with the typical diagnostic crystal cross-section. Covering the Enargite crystals are hundreds of tetrahedral Chalcopyrite crystals 1mm which are coated with dull black Chalcocite. An interesting paragenetic relationship of sulfides. Also associated with Quartz and Pyrite.

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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Previously Sold Enargite
On Dakota Matrix
Other Available Enargite
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