(Mina Flor de Azulillo)
Oficially the only mine in Chile that produced Au tellurides; this hydrotermal deposit was worked at great depth; dacite hosted the main gold ore veins. The mine was active from 1950 to 1980.
Ref.:
Carrasco R.(1969); "Memorandum general sobre mina Flor de Azulillo", Enami, Stgo de Chile, Chile.