Cala is a town and municipality located in the province of Huelva, Spain. According to the 2005 census, the city has a population of 1,324 inhabitants. The region has been mined since Carthaginian times and the local mines, Minas de Cala are well known for the minerals Skutterudite and Nickeline. Demographics References Mineralogy and origin of the skarn from Cala (Huelva, Spain), F. Velasco, and J. M. Amigo, Economic Geology, v. 76, no. 3, p. 719-727, May 1981 External links Cala - Sistema de Información Multiterritorial de Andalucía Minas de Cala Municipalities in the Province of Huelva