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Allactite

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CR28228

Allactite

Type Locality

Description Tabs

Description
Locality: 
Moss Mine, Nordmark, Filipstad, Värmland County, Sweden
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.6 × 1.2 cm
Largest Crystal: 
0.25cm
Description

Rich small specimen of the very rare mineral allactite on and in matrix from the type locality.

Mineral Data
What's on the rock

Allactite

Formula: 
Mn2+7(AsO4)2(OH)8
Strunz: 
8.BE.30
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Moss mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden