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El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain

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Name(s) in local language(s):Cueva de El Soplao, Zona minera de La Florida, Sierra de Arnero, Cantabria, España

Large cave inside the La Florida mines, noted mainly by the eccentric aragonite concretions. Open to tourists.

Mineral List

7 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.


Calvo, M. (2012): Minerales y Minas de España. Vol. V, Carbonatos y Nitratos. Boratos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 711 pp.

García, G., Palero, F. J.; Rabadán, J. and Hedrosa, M. (2007). Las minas de La Florida. Bocamina (20)

Lozano, R.P., Rossi,C., La Iglesia, A. y Matesanz, E. (2012). Zaccagnaite-3R, a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain). American Mineralogist, 97, 513–523,

Rossi, C., Lozano, R.P., Isanta, N. y Hellstrom, J. (2010). Manganese stromatolites in caves: El Soplao (Cantabria, Spain). Geology, 38, 1119–1122.

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