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Annite

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SER726183

Annite

Description Tabs

Description
Locality: 
Kawai Mine, Ena City, Gifu Prefecture, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2.1 × 1.6 cm
Description

Black micaceous annite between red rounded almandine crystals

Mineral Data
What's on the rock

Annite

Formula: 
KFe2+3(AlSi3O10)(OH)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic
Hardness: 
3.0
Colour: 
Black
Type Locality: 
Rockport, Essex Co., Massachusetts, USA