@misc{indiciae7129325d0854,
  title = {The zonal distribution of selected elements above the Kalamazoo porphyry copper deposit, San Manuel district, Pinal County, Arizona},
  author = {M.A. Chaffee},
  year = {1976},
  doi = {10.1016/0375-6742(76)90042-x},
  url = {https://pubs.usgs.gov/publication/70009760},
  note = {Source identifier: 70009760}
}