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Allactite

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CR103301

Allactite

Rare Mineral

Description Tabs

Description
Locality: 
Moss Mine, Nordmark, Filipstad, Värmland County, Sweden
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 5 × 2.7 cm
Largest Crystal: 
0.30cm
Description

Lustrous redbrown allactite crystals in small vugs of the matrix from the type locality.

Very rich old time specimen

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