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Fluorite & Siderite

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MGR942497

Fluorite & Siderite

Classic Locality

Description Tabs

Description
Locality: 
Greenlaws Mine, Daddry Shield, Weardale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 3.7 × 3 cm
Description

Several sharp terminated and good lustrous fluorite crystals embedded in reddish-brown siderite matrix. The fluorite has a nice smooth purple colour.

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White