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Braunite

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CFL652578

Braunite

Description Tabs

Description
Locality: 
Kuratomi Mine, Tsukumi City, Oita Prefecture, Kyushu Region, Japan
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 2 cm
Weight: 
20.00gr
Description

Rare specimen of braunite from this Japanese locality with only 3 reported mineral species including feitknechtite.

Mineral Data
What's on the rock

Braunite

Formula: 
Mn2+Mn3+6(SiO4)O8
Strunz: 
9.AG.05
Hardness: 
6.0 - 6.5
Streak: 
Black
Type Locality: 
Oehrenstock (Öhrenstock), Langewiesen, Ilmenau District, Thuringian Forest, Thuringia, Germany

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