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Sericite Psm Cordierite

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TWH537827

Sericite Psm Cordierite

Pseudomorph

Description Tabs

Description
Locality: 
Kameoka City, Kyoto Prefecture, Honshu Island, Japan
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.6 × 0.6 cm
Description

terminated, not sliced cerasite, a Japanese name after its famour flower. It is mica variety - sericite pseudomorphed after cordierite and consisted of trapiche pattern only shown when sliced.
 

Mineral Data
What's on the rock

Sericite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
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
JohnTu's Attic