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Kyanite & Staurolite

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WND813835

Kyanite & Staurolite

Classic Locality

Description Tabs

Description
Locality: 
Sponda Alp-Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.7 × 7 × 2.4 cm
Description

A striking cabinet specimen of lustrous and gemmy, blue kyanite prisms to 4,0 cm with one lustrous, chocolate-brown staurolite crystals to 1,0 cm in a matrix of lustrous, pearlescent paragonite schist from the type locality, Monte Campione, Faido, Ticino, Switzerland. Paragonite is an uncommon mica group mineral and this is a really good one.

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
Wendel Minerals

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