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Fluorite With Aragonite & Calcite

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PCZ190927

Fluorite With Aragonite & Calcite

Description Tabs

Description
Locality: 
Rogerley Mine, Frosterley, Weardale, County Durham, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 4 cm
Description

An unusual specimen from the famous Rogerley Mine. Reflective green fluorite cubes are partially coated with botryoidal aragonite/calcite. A bit different from the norm at this classic British locality.

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Peter Crozier Minerals