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Pleonaste On Fassaite

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CLB83743

Pleonaste On Fassaite

Classic Locality

Description Tabs

Description
Locality: 
Toal de la Foia, Moena, Trento Province, Trentino-Alto Adige, Italy
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 5 × 3 cm
Largest Crystal: 
0.40cm
Description

Very fine specimen with dark blue spinel crystals (variety: pleonast) up to 0.4 cm on light green fassaite crystals (a variety of augite).

Mineral Data
What's on the rock

Pleonaste

Variety Of: 

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Hardness: 
7.5 - 8.0
Hardness: 
0.0

Fassaite

Variety Of: 

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.0
Hardness: 
0.0

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