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Chalcocite

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NST625802

Chalcocite

Classic Locality

Description Tabs

Description
Locality: 
Butte, Silver Bow County, Montana, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.3 × 4 cm
Description

A massive example of chalcocite with pyrite from Butte.

Mineral Data
What's on the rock

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0