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Sillimanite

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SHS796260

Sillimanite

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Description
Locality: 
Kolsva, Köping, Västmanland County, Sweden
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 5.3 × 2.4 cm
Description

Sillimanite in matrix

Mineral Data
What's on the rock

Sillimanite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.05
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.5
Streak: 
white
Type Locality: 
Chester, Middlesex Co., Connecticut, USA
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