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Fluorite

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PCZ575766

Fluorite

Description Tabs

Description
Locality: 
Heights Quarry, Westgate, Weardale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.5 × 3 cm
Description

This is a very nice specimen from Heights Quarry and is unusual for a couple of reasons. Unlike most crystals from here these are colourless but internal phantoms can be clearly seen. The crystals are sharp and up to 2.2 cm on an edge. Most interesting is the fact that when rotated in light an internal rainbow effect can be observed.

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
Peter Crozier Minerals