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Braunite & Pyrolusite

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SHS75115

Braunite & Pyrolusite

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Description
Locality: 
Oehrenstock, Ilmenau, Thuringia, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.2 × 2.2 cm
Description

Braunite in pyrolusite

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

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5
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