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Bosiite

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SMM730257

Bosiite

Rare Mineral

Description Tabs

Description
Locality: 
Valletta Mine, Aisone, Cuneo Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2 × 1 cm
Description

This rare mineral of the tourmaline group (approved 2015) has been found in only three locations in the world. Many red-brownish, glassy crystals flattened on the matrix. Very rare!

Boxed with Label
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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