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Fredrikssonite

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SKY850179

Fredrikssonite

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 × 0.6 cm
Description

Dark brown prismatic crystals of the very rare Mg-Mn mineral fredrikssonite from Langban, the type and only one of two known localities worldwide.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

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

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