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Fluorite & Dolomite

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MGR649454

Fluorite & Dolomite

Description Tabs

Description
Locality: 
Ungerhammerplatzl, Unterlaussa, Liezen, Styria, Austria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.3 × 3 cm
Description

This material was found in the 70ties of last century. Field collecting is prohibited since decades, the quantity was very small. Even many local collectors don´t have this material, it represents a great rarity. The isolated crystal is dark, nearly black. Under strong backlight you can see the violet color along the edges. It is sharp terminated, faces are glossy. The contrast to glossy, white dolomite crystals is really fine. No significant damages to report.

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

Dolomite

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