@misc{indiciae30c1114addbe,
  title = {Map showing exposures of limonitic rocks and hydrothermally altered rocks in the Dillon 1 degree by 2 degrees Quadrangle, Idaho and Montana},
  author = {D. B. Segal and L. C. Rowan},
  year = {1989},
  doi = {10.3133/i1803a},
  url = {https://pubs.usgs.gov/publication/i1803A},
  note = {Source identifier: i1803A}
}