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Iolite Cordierite

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PDM935370

Iolite Cordierite

Description Tabs

Description
Locality: 
Babati District, Manyara Region, Tanzania (United Republic)
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2 × 1.2 cm
Weight: 
7.00gr
Description

Translucent cordierite (variety iolite) with strong pleochroism, from purple-blue to cream yellow by turning the piece 90°. Found in 2010.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Iolite

Variety Of: 

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Hardness: 
7.0 - 7.5
Hardness: 
0.0

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

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