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Quartz Psm Anhydrite

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SNJ90133

Quartz Psm Anhydrite

Pseudomorph

Description Tabs

Description
Locality: 
Animas District, San Juan County, Colorado, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.4 × 6.8 × 2.7 cm
Description

This is an attractive, white quartz encrustation of anhydrite from the heart of the Silverton district. The anhydrite was dissolved long ago in the vein. The San Juans are well known for their production of quality epimorphs.

Mineral Data
What's on the rock

Quartz

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

Anhydrite

Formula: 
CaSO4
Strunz: 
7.AD.30
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Type Locality: 
Salt mine, Hall valley, Hall, Innsbruck, Inn valley, North Tyrol, Tyrol, Austria
sanjuanmtnrocks