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Kyanite With Staurolite

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QRI842455

Kyanite With Staurolite

Former collection Lehmann (CH)
Classic Locality

Description Tabs

Description
Locality: 
Sponda Alp-Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 6.4 × 3.2 cm
Largest Crystal: 
2.00cm
Weight: 
136.00gr
Description

Thin slice of micaschist hosting elongated dark brown staurolite crystals associated to dark mica (biotite?). Both species are rather lustrous.

A nice locality piece.
 

Pasted Label
Mineral Data
What's on the rock

Staurolite

Formula: 
Fe2+2Al9O6(SiO4)4(O,OH)2
Strunz: 
9.AF.30
Crystal System: 
‎Monoclinic
Hardness: 
7.0 - 7.5
Colour: 
Brown

Kyanite

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

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