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Quartz Psm Calcite & Fluorite

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SNJ93574

Quartz Psm Calcite & Fluorite

Description Tabs

Description
Locality: 
Animas District, San Juan County, Colorado, United States of America
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.7 × 8.4 × 4.5 cm
Description

 This unusual epimorph is quartz after scalenahedral calcite and on green fluorite. The underlying fluorite gives the specimen a light greenish hue. The back side is actually a part of a quartz after rhombohedral calcite cast. 

Mineral Data
What's on the rock

Quartz

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
sanjuanmtnrocks