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Grischunite

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JYJ632606

Grischunite

Description Tabs

Description
Locality: 
Falotta, Tinizong, Oberhalbstein Alps, Albula Region, Grisons, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.3 × 0.6 cm
Description

Orange-red to brown crystals on dark manganoan matrix. 

 

Ex. G. Möhn collection 

Mineral Data
What's on the rock

Grischunite

Formula: 
NaCa2Mn2+5Fe3+(AsO4)6·2H2O
Strunz: 
8.CF.05
Crystal System: 
Orthorhombic
Hardness: 
5.0
Type Locality: 
Falotta, Tinizong (Tinzen), Oberhalbstein (Surses; Sursass), Albula Valley, Grischun (Grisons; Graubünden), Switzerland