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Cordierite

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TPX851887

Cordierite

Classic Locality

Description Tabs

Description
Locality: 
El Hoyazo, Níjar, Almería, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.3 × 2.8 cm
Weight: 
58.00gr
Description

Very interesting sample of cordierite crystals up accrued on crater bottom as result of almandine-rich dacite weathering. The matrix of this piece consist in fibrous masses of Sillimanite with opal and black laminar Biotite.

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

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