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Roméite & Braunite

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SER162335

Roméite & Braunite

Type Locality

Description Tabs

Description
Locality: 
Praborna Mine, Saint-Marcel, Aosta Valley, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.5 cm
Description

Some orange romeite crystals on piemontite with black braunite from the type locality

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