@misc{indiciaefd80007efbea,
  title = {By-products of porphyry copper and molybdenum deposits},
  author = {David A. John and Ryan D. Taylor},
  year = {2016},
  doi = {10.5382/rev.18.07},
  url = {https://pubs.usgs.gov/publication/70048652},
  note = {Source identifier: 70048652}
}