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Preit uranium deposit, Preit & Marmora Valleys, Maira Valley, Cuneo Province, Piedmont, Italy

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 44° North , 7° East (est.)
Margin of Error:~61km
Köppen climate type:Cfb : Temperate oceanic climate
Name(s) in local language(s):Giacimento uranifero del Preit, Valloni del Preit e di Marmora, Valle Maira (Val Maira; Valle Macra), Provincia di Cuneo, Piemonte, Italia

Uranium ores and mineralizations in Permian schists (Briançonnais Domain).

The main mineralizations are located:
- to the N and E of Bric Balacorda (left side of Preit valley, municipality of Canosio);
- at Grange Serre and Salabessa (right side of Preit valley, municipality of Canosio);
- at Comba Colombier and Sletta (left side of Marmora valley, municipality of Marmora).

A radiometric field survey of the territory was performed by the Italian National Agency for Nuclear Researchs (Comitato Nazionale per le Ricerche Nucleari) in 1956-57 and mining works were carried out by Somiren (a mining company owned by ENI). Near Pian Preit exploration galleries and shafts were mainly excavated at Grange Serra (1080 m in total length) and Salabessa (579 m in total length), to a lesser extent at Bric Balacorda. In Marmora valley only 304 m of galleries were excavated.

Mineral List

8 valid minerals.

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Ravagnani, D. (1974) I giacimenti uraniferi italiani e i loro minerali. Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale, Milano, 188 pp.
Piccoli, G.C. (2002) I minerali delle Alpi Marittime e Cozie. Provincia di Cuneo. Associazione Amici del Museo "F. Eusebio" di Alba, L'Artistica Savigliano Srl, Savigliano (Cuneo), 362 pp.
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, L'Artigiana Srl - Azienda Grafica, Alba (Cuneo), 607 pp.

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