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Quartz Psm Anhydrite

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SNJ87125

Quartz Psm Anhydrite

Description Tabs

Description
Locality: 
Silverton, Animas, San Juan County, Colorado, United States of America
Size Range: 
Small cabinet (7-10 cm)
Size: 
4.5 × 8 × 4 cm
Description

Several crystals of anhydrite were encrusted by quartz before dissolution of the original mineral. Actually a cast. From a very remote and rugged locality almost never visited.

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
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