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Kyanite Staurolite On Paragonite

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MEX660542

Kyanite Staurolite On Paragonite

Classic Locality

Description Tabs

Description
Locality: 
Sponda Alp-Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 6 × 2.5 cm
Weight: 
156.00gr
Description

A very rich specimen with few cyanite and staurolite crystals on paragonite.

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

Paragonite

Formula: 
NaAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Sponda Alp - Pizzo Forno, Chironico Valley, Leventina, Ticino (Tessin), Switzerland