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Fluorite & Stilbite

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RPN98431

Fluorite & Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Hirschau Quarry, Böckstein, St Johann im Pongau District, Salzburg, Austria
Size Range: 
Cabinet (10-18 cm)
Size: 
11.2 × 8 × 4.5 cm
Largest Crystal: 
2.40cm
Description

Green translucent octahedral fluorite with good color out of gneis. Crystals reach 2.4cm on the edge and are of very good color for the location. They are partially covered by tiny stilbite.

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

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White
minhunter

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