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Staurolite With Biotite

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QRI839740

Staurolite With Biotite

Description Tabs

Description
Locality: 
Lago Ritom, Piora Valley, Quinto, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.3 × 1.2 cm
Largest Crystal: 
0.70cm
Weight: 
16.00gr
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.
 

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

Biotite

Group Parent: 
Mica Group

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Shipping within 15 days after payment received, unless specified/agreed otherwise.

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