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Stilbite & Adularia

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MGR956142

Stilbite & Adularia

Description Tabs

Description
Locality: 
Grieswies, Hüttwinkl Valley, Rauris, Salzburg, Austria
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 3.1 × 2.2 cm
Description

What a beutiful Alpine combination. Here we have a fine cluster of intergrown adularia crystals with a fine lustre and some intergrown chlorine at the bottom. Cherry on the cacke is for sure that the adularia is hosting an almost perfect formed stilbite cluster on top, reminding of a statue with a curly hair-cut.

Mineral Data
What's on the rock

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

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase