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Synadelphite

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CR136151

Synadelphite

Rare Mineral

Description Tabs

Description
Locality: 
Nordmark, Filipstad, Värmland County, Sweden
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2.8 × 1.8 cm
Description

This is a very good old time synadelphite specimen from the famous Rijksmuseum Stockholm.

Sharp darkbrown synadelphite microcrystals with pale brown allactite crystals on matrix.

Very good and rich specimen.

Mineral Data
What's on the rock

Synadelphite

Formula: 
Mn2+9(As5+O4)2(As3+O3)(OH)9·2H2O
Strunz: 
8.BE.50
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Moss mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden