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Bosiite

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GMA924806

Bosiite

Description Tabs

Description
Locality: 
Valletta Mine, Vallone della Valletta, Canosio, Cuneo Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.8 × 1 cm
Description

Reddish brown elongated crystals in matrix.

Mineral Data
What's on the rock

Bosiite

Formula: 
NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
Group Parent: 
Tourmaline
Crystal System: 
Trigonal
Hardness: 
7
Colour: 
Dark brown to black
Streak: 
Pale brown
Type Locality: 
Darasun Mine, Transbaikalia, Eastern-Siberian Region, Russia

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