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Plumboferrite

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SKY514357

Plumboferrite

Type Locality

Description Tabs

Description
Locality: 
Jakobsberg Mine, Nordmark, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1 × 1 cm
Description

Black sharp crystals of the very rare mineral plumboferrite. The mineral has only been found in three non-slag localities worldwide, this one being from the type locality. The label says Langban as the locality but this is very unlikely. Due to the paragenesis, the locality must be the Jakobsberg mine, also in Sweden.

Mineral Data
What's on the rock

Plumboferrite

Formula: 
Pb2Fe3+11-xMn2+xO19-2x, x = 1/3
Strunz: 
4.CC.45
Hardness: 
5.0
Colour: 
Blackish
Streak: 
Red
Type Locality: 
Jakobsberg Mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden

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