@misc{indiciae602088e9c609,
  title = {Data on some stratabound Precambrian deposits containing zinc, copper, lead, silver, and gold in the Royal Gorge 15-minute quadrangle, Colorado},
  author = {William H. Raymond and Douglas M. Sheridan},
  year = {1980},
  doi = {10.3133/ofr80833},
  url = {https://pubs.usgs.gov/publication/ofr80833},
  note = {Source identifier: ofr80833}
}