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Adularia Apatite & Chlorite

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MGR504103

Adularia Apatite & Chlorite

Description Tabs

Description
Locality: 
Ils Umens, Casatscha Valley, Cristallina Valley, Val Medel, Surselva Region, Grisons, Switzerland
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 2.2 × 1.8 cm
Description

A group of lustrous adularia crystals formed this floater. Adularia shows good clarity, termination is sharp. The main crystal shows a thin layer of chlorite on two edges, as seen on 1st and 4th photo in the galery. Also the 4th photo shows a small damage at the backside of adularia. At the base a group of fluorapatite crystals is attachted. These crystals are very sharp terminated, lustrous and they show a light lavender color. A beautiful, aesthetic combination, very rare material and hard to obtain.

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

Chlorite

Synonym Of: 

Chlorite Group

Group Parent: 
Chlorite
Crystal System: 
Monoclinic
Hardness: 
2 - 2.5
Colour: 
Green, Grey, Brown
Streak: 
colourless
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