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Sillimanite

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CLB551052

Sillimanite

ex collection Karl Schwarz
Type Locality

Description Tabs

Description
Locality: 
Sillimanite Type Locality, Chester, Middlesex County, Connecticut, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 4 × 2.5 cm
Description

Very good type locality specimen of sillimanite.

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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