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Fluorite & Stilbite

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KFT41662

Fluorite & Stilbite

Description Tabs

Description
Locality: 
Hirschau Quarry, Böckstein, St Johann im Pongau District, Salzburg, Austria
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 5 cm
Largest Crystal: 
1.40cm
Description

Sharp terminated octaedrons with light green colour.The matrix is covered by tiny stilbite crystals. Very esthetical.

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