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Apophyllite

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ASA594704

Apophyllite

Description Tabs

Description
Locality: 
Felber Valley, Mittersill, Zell am See District, Salzburg, Austria
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.4 × 1.3 cm
Description

A rare specimen from the Tungsten Mine in Felbertal, Austria. It shows a (twinned) gemmy, lustrous perfect terminated crystal of apophyllite on matrix. This specimen is from an old find an has an outstanding quality for that location. Such specimen are normally not available on the market.

Mineral Data
What's on the rock

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

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