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Fluorite & Calcite

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CR23771

Fluorite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Blackdene Mine, Weardale, County Durham, United Kingdom
Size Range: 
Museum (18cm plus)
Size: 
21.5 × 16.5 × 7 cm
Largest Crystal: 
10.50cm
Description

A very good and aesthetic fluorite specimen partely covered with transparent calcite crystals from an old collection.

Very good display.

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