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Långbanite

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JYJ781259

Långbanite

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.1 × 1.8 cm
Description

Black hexagonal langbanite in tephroite matrix from Langban. Type locality. 

 

Mineral Data
What's on the rock

Långbanite

Formula: 
(Mn2+,Ca)4(Mn3+,Fe3+)9Sb5+(SiO4)2O16
Strunz: 
9.AG.10
Hardness: 
6.5
Colour: 
black
Streak: 
brown
Type Locality: 
Långban, Filipstad, Värmland, Sweden