@misc{indiciaec99bcfc9ca3a,
  title = {Field guide: Gold-copper-silver deposits of the New World District Northwest Geology},
  author = {J. E. Elliot and A. R. Kirk and T.W. Johnson},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70186535},
  note = {Source identifier: 70186535}
}