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Mica Psm Cordierite

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TWH587635

Mica Psm Cordierite

Pseudomorph

Description Tabs

Description
Locality: 
Yssertaux, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.1 × 1 cm
Description

complete terminated cordierite fully replaced by mica. A name "pinite" is primarily composed of mica which pseudomorphs after silicate minerals, such as cordierite with completed crystal form.

Mineral Data
What's on the rock

Mica

Group Parent: 
Mica Group

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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