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Enargite & Pyrite

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JYJ694031

Enargite & Pyrite

Description Tabs

Description
Locality: 
Butte, Silver Bow County, Montana, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.5 × 2.3 cm
Description

Black metallic enargite with pyrite on matrix. Sample has a number glued at the left. 

Mineral Data
What's on the rock

Enargite

Formula: 
Cu3AsS4
Strunz: 
2.KA.05
Crystal System: 
Orthorhombic
Hardness: 
3.0
Streak: 
Black.
Type Locality: 
San Francisco vein, Morococha District, Yauli Province, Junín Department, Peru

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
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