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Fluorite

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BMM543816

Fluorite

New Discovery

Description Tabs

Description
Locality: 
Summit Cleft, Weißeck, Murwinkel, Tamsweg District, Salzburg, Austria
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 6.5 × 3.2 cm
Description

Reinhold Bacher worked for the last 7 years at a cleft at the north face of Weisseck. This cleft was completely filled with ice. The work was very hard and time-consuming, but the results are impressive: Most of the similar pieces from this region are etched from humid acid and thus dull. However, most specimen from the Ice Cleft are fantastically lustrous and sharp, which makes them look as if they were wet. The perma-frost protected the fluorite and hence many crystals are lustrous. Additionally, a lot of different colors and shapes were found in the Ice Cleft.

The center of this fluorite is dark violet and there is a bright colorless zoning along edges. The faces are highly lustrous with very good square texture. The fluorite is crystallized all around, only the backside was extracted from the rock. Undamaged. I used LED spots for backlit (photo 2, 3, 5 and 6).

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