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Enargite & Chalcopyrite

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BCK722608

Enargite & Chalcopyrite

Martin Jensen collection

Description Tabs

Description
Locality: 
Trixie Mine, East Tintic District, Utah County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 1.8 × 1 cm
Description

You are bidding on a beautiful sample with large, lustrous enargite crystals on matrix with very strange chalcopyrite crystals. Collected by Martin in 1992. 

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

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

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