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Adularia & Apatite

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MGR1033404

Adularia & Apatite

Classic Locality

Description Tabs

Description
Locality: 
Starlera Mine, Starlera Valley, Ferrera Valley, Hinterrhein, Grisons, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11.2 × 6.5 × 6.8 cm
Description

Lustrous and well formed crystal cluster of bright adularia on matrix. It is nicely placed in the center of the mother rock and surrounded by numerous tiny adularia and even apatite crystals. Fine specimen from the Swiss Alps.

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