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Poggio al Montone, Montoccoli-Castellaccia area (Fosso Zanca-Filone di Montoccoli area; Zanca Valley mines), Massa Marittima, Grosseto Province, Tuscany, Italy

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Latitude & Longitude (WGS84): 43° 2' 56'' North , 10° 55' 50'' East
Latitude & Longitude (decimal): 43.0488888889, 10.9305555556
Name(s) in local language(s):Poggio al Montone, Area di Montoccoli-Castellaccia (Area di Fosso Zanca-Filone di Montoccoli; Miniere della valle Zanca), Massa Marittima, Provincia di Grosseto, Toscana, Italia

Ancient mines of chalcopyrite and argentiferous galena located at Poggio al Montone, on the left side of Zanca stream. The ore was exploited for silver, copper, and lead in Etruscan times, then during the Middle Ages and in the 19th century. Modern exploration works for mixed sulphides have been performed at the beginning of the 1960s.

Mineral List

25 valid minerals.

The above list 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.

External Links

- Bazzoni C., Mangoni G., Capperi M., Bernocchi M. (2011): Montoccoli-Castellaccia: I minerali delle miniere nella valle del torrente Zanca (Grosseto). Riv. Mineral. Ital., 35, 2 (2-2011), 76-89.
- Costantini A., Pagani G. (eds.) (2015): Minerali: bellezze della natura nel Parco delle Colline Metallifere - Tuscan Mining Geopark. Pacini Editore, Pisa, 272 pp.

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