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Andalusite

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MEX660536

Andalusite

Classic Locality

Description Tabs

Description
Locality: 
Morbihan, Brittany, France
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.4 × 5.4 × 1.1 cm
Largest Crystal: 
8.00cm
Weight: 
46.00gr
Description

A large single crystal on typical metamorphic shale matrix.

Mineral Data
What's on the rock

Andalusite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.10
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.5
Streak: 
White
Type Locality: 
El Cardoso de la Sierra, Guadalajara, Castile-La Mancha, Spain