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Braunite

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ESM717529

Braunite

Description Tabs

Description
Locality: 
Oehrenstock, Langewiesen, Ilmenau, Thuringia, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.5 × 6.5 × 5 cm
Description

Black braunite crystals on matrix

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