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Iwakiite

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CAM210245

Iwakiite

Description Tabs

Description
Locality: 
Jakobsberg Mine, Nordmark, Filipstad, Värmland County, Sweden
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 1.6 × 1.5 cm
Description

Black metallic grains, masses and some crystal-fragments of the rare manganese-iron-oxide iwakiite in a calcite-manganophyllite matrix.
A very good and rich example of this rare species.

Mineral Data
What's on the rock

Iwakiite

Renamed To: 

Jacobsite-Q

Formula: 
T(Mn2+)M(Fe3+2)O4
Hardness: 
6 - 6.5
Formula: 
Mn2+Fe3+2O4
Strunz: 
4.BB.10
Crystal System: 
Tetragonal
Hardness: 
6.0 - 6.5
Type Locality: 
Gozaisho mine, Iwaki, Fukushima Prefecture, Tohoku Region, Honshu Island, Japan
Cartils Minerals

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