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Kyanite & Staurolite

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NST716564

Kyanite & Staurolite

Description Tabs

Description
Locality: 
Campolungo Pass, Campolungo, Leventina, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 0.9 cm
Largest Crystal: 
3.50cm
Description

A transparent, blue 3.5 cm crystal of kyanite and a brown Staurolite in mica shist matrix from Campolungo, Switzerland. Beautiful example for the species.

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

Staurolite

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