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Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

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Erythrite : Co3(AsO4)2·8H2O

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

Size 0,4 mm
 © Luigi MatteiPhoto ID: 226755    View Count: 37

Goethite : α-Fe3+O(OH)

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

Specimen size: 4,5x5x2,5 cm; from "Taglio del Ferro". Collected 2006. Photo and collection Giovanni Fraccaro.
 © GiovanniFraccaroPhoto ID: 68172    View Count: 292

Parasymplesite : Fe2+3(AsO4)2·8H2O

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

Green needles crystals of Parasymplesite into quartz vug,from Punta Corna mine. Image width 2 mm. Self collected 2003. Photo and collection Giovanni Fraccaro.
 © GiovanniFraccaroPhoto ID: 50332    View Count: 447

Parasymplesite : Fe2+3(AsO4)2·8H2O

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

radiating group of elongated green crystals of parasymplesite up to 0.3 mm
Photo and collection E. Bonacina
 © D. PreitePhoto ID: 195493    View Count: 68

Parasymplesite : Fe2+3(AsO4)2·8H2O

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

dimension area mm. 12 x 12

photo and collection Luigi Chiappino
 © luigi chiappinoPhoto ID: 210104    View Count: 39

Skutterudite (Var: Smaltite) : (Co,Fe,Ni)As2

Punta Corna - Torre di Ovarda Mines, Usseglio, Viù Valley, Lanzo Valley, Sesia-Lanzo zone, Torino Province, Piedmont, Italy

Dark grey crystals of smaltite on siderite matrix, from Punta Corna mine. Self collected 2003. Photo and collection Giovanni Fraccaro.
 © GiovanniFraccaroPhoto ID: 44199    View Count: 439
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