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Alurgite & Braunite

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SHS210341

Alurgite & Braunite

Description Tabs

Description
Locality: 
Tirodi Mine, Balaghat District, Madhya Pradesh, India
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.4 × 1.4 cm
Description

 Alurgite and braunite on matrix

Mineral Data
What's on the rock

Alurgite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K2(Mg,Al)4-5(Al,Si)8O20(OH)4
Hardness: 
0.0
Colour: 
Purple

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