@misc{indiciae9010c635de96,
  title = {Igneous rocks and copper mineralization in the Ray porphyry copper district, Arizona},
  author = {Henry Rowland Cornwall and Norman G. Banks},
  year = {1977},
  doi = {10.3133/ofr77255},
  url = {https://pubs.usgs.gov/publication/ofr77255},
  note = {Source identifier: ofr77255}
}