(Mina la Compania, Caracoles, Sierra Gorda, Tocopilla, Antofagásta, Chile)
Copper deposit with supergene gold in highly argillized andesite. Located South of Sierra Gorda.
Ref.:
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 457, 605, 620.