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Fluorite

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PAU21693

Fluorite

Fluorescent

Description Tabs

Description
Locality: 
Rogerley Mine, Frosterley, Weardale, County Durham, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
11.2 × 7.7 × 4.8 cm
Largest Crystal: 
2.20cm
Description

This large specimen have a well formed, lustrous, transparent and green twin crystals up to 2.2 cm. on edge.

Under daylight there is a change from the green color to a blue-green color.

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