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Covellite & Quartz

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MGR880651

Covellite & Quartz

Classic Locality

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: 
4.7 × 4.6 × 2.4 cm
Description

Nice combination of irricent covelline perfectly sitting on top of crystallised quartz crystals.

Mineral Data
What's on the rock

Covellite

Formula: 
CuS
Strunz: 
2.CA.05a
Crystal System: 
Hexagonal
Hardness: 
1.5 - 2.0
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White