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Fluorite & Calcite

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MGR938588

Fluorite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Denton Mine, Harris Creek, Hardin County, Illinois, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11.6 × 9.1 × 5.8 cm
Description

Super fine coloured and textured, almost silky appearing surface patterns on this awesome fluorite from Illinois. Cherry on the cacke are definitely the dozens of calcite crystals attached.

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