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Kyanite & Muscovite

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RHT170497

Kyanite & Muscovite

Classic Locality

Description Tabs

Description
Locality: 
Formazza Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
14.4 × 10.3 × 4 cm
Description

Blue kyanite with some colorless muscovite mica on quartz-feldspar matrix.

Mineral Data
What's on the rock

Kyanite

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

Muscovite

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