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Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy

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Opal : SiO2·nH2O

Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy

This specimen size 5x4 cm,specimen N°V80 in the collection.Photo and collection Paolo Grosso
 © Paolo GrossoPhoto ID: 35371    View Count: 466

Todorokite : (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O

Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy

This specimen overall size 4x3x4 cm.Photo and collection Paolo Grosso
 © Paolo GrossoPhoto ID: 37243    View Count: 431

Todorokite : (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O

Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy

Black Todorokite into white opal. Image width 30 mm. Photo and collection Giovanni Fraccaro.
 © GiovanniFraccaroPhoto ID: 51931    View Count: 331

Todorokite : (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O, Opal : SiO2·nH2O, Magnesite : MgCO3

Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy

Black Todorokite into white opal with yellowish magnesite. Specimen size: 6x6x2 cm. Self collected 1981. Photo and collection Alessandro Cantamessa (#82).
Photo ID: 150575    View Count: 266
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