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Bosiite

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SMM958371

Bosiite

Rare Mineral

Description Tabs

Description
Locality: 
Valletta Mine, Vallone della Valletta, Canosio, Cuneo Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.5 × 1.7 cm
Description

Small-miniature with more groups of very good glassy, warm/red crystals of bosiite. This rare mineral of the tourmaline group (approved 2015) has been found in only three locations in the world.

Excellent specimen and very rare!

Named in honor of Dr Ferdinando Bosi (1967-), researcher at the University of Rome La Sapienza, Italy, an expert in crystallography and mineralogy of tourmalines and spinels.

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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