@misc{indiciae0ba07b91b4d4,
  title = {Geochemical variation in a copper-bearing redbed sequence of the Ravalli Group (Belt Supergroup), northwestern Montana and northern Idaho; Part A, Geological interpretation},
  author = {Jon J. Connor},
  year = {1991},
  doi = {10.3133/ofr9128a},
  url = {https://pubs.usgs.gov/publication/ofr9128A},
  note = {Source identifier: ofr9128A}
}