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Quartz Psm Anhydrite

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SNJ92870

Quartz Psm Anhydrite

Description Tabs

Description
Locality: 
Animas District, San Juan County, Colorado, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 4 × 3.3 cm
Largest Crystal: 
2.40cm
Description

This is a very sharp quartz epimorph. Numerous anhydrite crystals have been encrusted before the anhydrite was dissolved long ago in the pocket.

A couple of <1 mm. pyrite crystals are visible. 

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