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Fluorite

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MGR164744

Fluorite

Description Tabs

Description
Locality: 
Rogerley Mine, Frosterley, Weardale, County Durham, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 5.9 × 4.7 cm
Description

Flourite is up to 12 mm on edges. Fine uncommon specimen from this well known locality. Most specimen feature twinned crystals, also they are intergrown in plates. What we have here are isolated crystals or small groups of untwinned crystals on white quartz crystals - most likely from an older discovery at the "Black-Sheep" pocket. Some galena crystals are also present. no significant damages to report. photos done under daylight-conditions, more green under artificial light.

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