@misc{indiciae9aab38074085,
  title = {Description and grades and tonnages of gold-bearing skarns},
  author = {G. J. Orris and J. D. Bliss and J. M. Hammarstrom and T. G. Theodore},
  year = {1987},
  doi = {10.3133/ofr87273},
  url = {https://pubs.usgs.gov/publication/ofr87273},
  note = {Source identifier: ofr87273}
}