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Fluorite Sphalerite & Calcite

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RBR47930

Fluorite Sphalerite & Calcite

Description Tabs

Description
Locality: 
Cave In Rock District, Illinois, United States of America
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 2.5 cm
Largest Crystal: 
1.00cm
Description

A good specimen of 1cm large sphalerite with etched fluorite and calcite.

Please notice the violet main-crystal!

Beneath the sphalerites are some good calcite on this floater.

Mineral Data
What's on the rock

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Calcite

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

Seller Information

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