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Cordierite

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DPH132286

Cordierite

Description Tabs

Description
Locality: 
Sankt Leonhard im Pitztal, Imst District, Tyrol, Austria
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6 × 3 cm
Description

Big intergrown crystal of cordierite in a good size from an alpine locality, self-collected from Mr. Petitjean (petitjeanite)

Mineral Data
What's on the rock

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Type Locality: 
Großer Arber, Bayerisch Eisenstein, Lower Bavaria, Bavaria, Germany