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Fluorite & Calcite & Dolomite

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BMM662940

Fluorite & Calcite & Dolomite

Description Tabs

Description
Locality: 
Rieding Lake, Weißeck, Murwinkel, Tamsweg District, Salzburg, Austria
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 5.5 × 2.2 cm
Description

Bright green, lustrous fluorite grown on beige dolomite crystals. There are also calcite crystals which are grown on the fluorite. On one side of the specimen the fluorites are very translucent and therefore you can see the dolomite crystals in the interior of the fluorite (second photo). No significant damage to report; crystallized all around. The bottom was extracted from the rock. The specimen stands in the displayed position without any support.

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

Calcite

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White