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Fluorite

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MGR652642

Fluorite

Description Tabs

Description
Locality: 
Hirschau Quarry, Böckstein, St Johann im Pongau District, Salzburg, Austria
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
15 × 9 × 6.9 cm
Description

Hirschwald: this discovery has already been mentioned in the specialist literature many times and is well known to generations of collectors. Thus it is not actually a new discovery but rather a resurrection.
Here, the fluorite surfaces from time to time in hydrothermal veins. Several discoveries are known, which – time and again – have produced green octahedrons of up to 4 centimeters edge length – exceptional crystals with an edge length of over 5 centimeters are also known. The color is almost always of a pale green, the surface typically strongly etched. Mostly, the specimens are made of intensely chatty crystals, and the matrix forms a central gneiss complex. This specimen is from a discovery in 2010, crystals are up to 20mm across. They show a light green color and are partly covered with beige stilbite layer. no significant damages to report, backside was on the rock.

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