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Fluorite & Calcite

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ESM773324

Fluorite & Calcite

Description Tabs

Description
Locality: 
Rosiclare District, Hardin County, Illinois, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 9 × 4 cm
Description

A cluster of sharp lustrous yellow fluorite cubes with purple zoning hosting a cluster of colorless calcite crystals

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

Calcite

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