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Staurolite With Kyanite

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JZM636759

Staurolite With Kyanite

Description Tabs

Description
Locality: 
Sponda Alp-Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2 × 6.7 × 5 cm
Largest Crystal: 
4.00cm
Weight: 
85.00gr
Description

Nice example with brown crystals of staurolite up to 25 mm with elongated blue crystals of kyanite up to 4 cm long in schist matrix.

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

Seller Information

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