In the paper, "A revised Late Eocene age for porphyry Cu magmatism in the Escondida area,
northern Chile," by J.P. Richards, S.R. Noble, and M.S. Pringle (Vol. 94, issue 8, 1999), an error
occurs. For Table 2 (p. 1238), an incorrect grid reference is given for sample ZAL1. This sample was
collected from bulk samples taken from an old underground adit, and its exact original location is
unknown. No grid reference should be listed.