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Fredrikssonite

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SER1006646

Fredrikssonite

ex Americo Urbinati collection
Type Locality

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.5 × 2.4 cm
Description

Reddish-brown crystals of fredrikssonite on matrix from its type locality

Mineral Data
What's on the rock

Fredrikssonite

Formula: 
Mg2(Mn3+,Fe3+)(BO3)O2
Strunz: 
6.AB.30
Hardness: 
6.0
Type Locality: 
Långban, Filipstad, Värmland, Sweden