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Långbanite

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JYJ1046802

Långbanite

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 1.8 × 1.7 cm
Description

Black langbanite in calcite matrix from the Langban, Filipstad mining area, Sweden. 

Rare mineral. Comes with an old label from an austrian collector. 

 

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