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Sillimanite

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SHS195893

Sillimanite

Staatliche Mineralien-Niederlage Freiberg, Sa. (Saxony/Germany)
With Antique Label

Description Tabs

Description
Locality: 
Delaware County, Pennsylvania, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.4 × 2.8 cm
Description

 Nice piece of sillima ite with old label

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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