@misc{indiciae172cd3d5493a,
  title = {Map showing areas of limonitic hydrothermal alteration in the Lake City Caldera area, western San Juan Mountains, Colorado},
  author = {Keenan Lee},
  year = {1986},
  doi = {10.3133/mf1868},
  url = {https://pubs.usgs.gov/publication/mf1868},
  note = {Source identifier: mf1868}
}