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Pratolugo (Pratolungo), Isasca valley, Venasca, Varaita Valley, Dora Maira Massif, Cuneo Province, Piedmont, Italy

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Magnesiodumortierite : (Mg,Ti,[](Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3

Pratolugo (Pratolungo), Isasca valley, Venasca, Varaita Valley, Dora Maira Massif, Cuneo Province, Piedmont, Italy

Image width 2 mm. From Pratolugo, Venasca, Varaita Valley.
Collection and photo Giovanni Fraccaro.
 © G.FraccaroPhoto ID: 170248    View Count: 150

Magnesiostaurolite : (Mg,Li,Fe2+)1.5-2Al9[O6|(OH)2|(SiO4)4]

Pratolugo (Pratolungo), Isasca valley, Venasca, Varaita Valley, Dora Maira Massif, Cuneo Province, Piedmont, Italy

Image width 2 mm. From Pratolugo, Venasca, Varaita Valley.
Collection and photo Giovanni Fraccaro.
 © G.FraccaroPhoto ID: 170249    View Count: 213
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