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Cordierite

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QRI1027881

Cordierite

Classic Locality

Description Tabs

Description
Locality: 
Moland, Akland, Risør, Agder, Norway
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.6 × 9 × 5.4 cm
Weight: 
733.00gr
Description

Significant rock specimen featuring numerus purple-blue cordierite 'eyes' embedded in grey gneiss. Good quality for the specie and locality, very rich.

Cordierite was one of the minerals used by Vikings to navigate their ships from Scandinavia to Greenland!

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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