@misc{indiciae1baa93359bdc,
  title = {Age of supergene oxidation and enrichment in the Chilean porphyry copper province},
  author = {R.H. Sillitoe and E.H. McKee},
  year = {1996},
  doi = {10.2113/gsecongeo.91.1.164},
  url = {https://pubs.usgs.gov/publication/70018070},
  note = {Source identifier: 70018070}
}