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Cordierite & Celadonite

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MNR117859

Cordierite & Celadonite

Description Tabs

Description
Locality: 
Věžná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 4.9 × 3.3 cm
Description

Brown grain of beryllium cordierite (2,2 cm) in microcline matrix. There are also green seladonite crystals visible on matrix.

Free shipping up to 1 kg (2 lbs), if conditions met (see the auction header).

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

Celadonite

Formula: 
K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.0
Type Locality: 
Planitz, Zwickau, Saxony, Germany