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Rencio quarries, Crodo gneiss quarries, Crodo, Antigorio Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 46° North , 8° East (est.)
Margin of Error:~1km
Other regions containing this locality:The Alps, Europe
Locality type:Group of Quarries
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Cave di Rencio, Cave di gneiss di Crodo, Crodo, Valle Antigorio, Val d'Ossola, Provincia del Verbano-Cusio-Ossola, Piemonte, Italia

These group of gneiss quarries, on the right side Antigorio Valley, includes the quarries named Rencio Castello, Rencio Molinetto, and Rencio Superiore.

The first find of babingtonite from gneiss fissures in Italy has been reported from Rencio Castello quarry (Gentile, 1985).

Roggiani (1975), who considered “clinoptilolite” a sodic variety of heulandite, reported its presence at the Rencio quarries by mentioning specimens of the Giuseppe Scaini collection. Analyses on these specimens, in order to ascertain their real nature, and on “heulandite” from the same locality, in order to determine the sodium content, would be welcome (Piccoli et al., 2007).

Mineral List

5 valid minerals.

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- Roggiani A.G. (1975): Ossola minerale. Estratto da “Novara” n°3, Bimestrale edito dalla Camera di Commercio Industria Artigianato e Agricoltura di Novara, Tipogr. S. Gaudenzio, Novara, 112 pp.
- Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
- Gentile P. (1985): Recenti identificazioni presso l'Università di Pavia. Babingtonite di Rencio, Crodo (Valle Antigorio - NO). Riv. Mineral. Ital., 9, 4 (4-1985), 145.
- 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, Ed., Alba, 607 pp.

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