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Andalusite

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TBM788913

Andalusite

Classic Locality

Description Tabs

Description
Locality: 
Villa di Chiavenna, Bregaglia Valley, Sondrio Province, Lombardy, Italy
Class: 
Crystals on Matrix
Size Range: 
Museum (18cm plus)
Size: 
22 × 16 × 9.6 cm
Weight: 
4 501.00gr
Description

Very large plate studded with square-based prismatic crystals, incorporated in the compact white quartz. Crystal max 30 mm size.

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