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Adularia & Apatite

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MGR768485

Adularia & Apatite

Classic Locality

Description Tabs

Description
Locality: 
Prehnitinsel, Kratzenberg, Habach Valley, Salzburg, Austria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.4 × 3.4 cm
Description

The specimen is developed as floater; the twinned adularia crystals are powdered with a green layer of chlorite, all faces and edges are sharp and the crystals are complete all around. A very fine alpine sample from an old collection. At the bottom you can find micro-crystals of apatite.

Mineral Data
What's on the rock

Adularia

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

Apatite

Synonym Of: 

Chlorapatite

Formula: 
Ca5(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
5.0

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Hardness: 
5.0

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Hardness: 
5.0
Crystal System: 
Hexagonal
Hardness: 
5