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Muscovite & Kyanite

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SHS858026

Muscovite & Kyanite

Description Tabs

Description
Locality: 
Binn Valley, Valais, Switzerland
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 5 × 3 cm
Description

Nice muscovite and kyanite in matrix

Mineral Data
What's on the rock

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Kyanite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.15
Crystal System: 
Triclinic Forms long bladed crystals.
Hardness: 
5.5 - 7.0
Streak: 
Colorless