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Sillimanite

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SHS550665

Sillimanite

Description Tabs

Description
Locality: 
Williamstown, Mount Lofty Ranges, South Australia, Australia
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1 × 1 cm
Description

Nice 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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