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Iwakiite

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SKY576764

Iwakiite

Rare Mineral

Description Tabs

Description
Locality: 
Mangruvan, Nyberget, Lindesberg, Örebro County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 2.1 × 1.1 cm
Description

Black crystal aggregates of the very rare mineral iwakiite from one of the only 5 known localities worldwide.

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

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