@misc{indiciaedecae4aba942,
  title = {Geochemical analyses of rock samples from the Black Butte district and Holderman Mountain area, Lane County, Oregon},
  author = {Jocelyn A. Peterson},
  year = {1994},
  doi = {10.3133/ofr94666},
  url = {https://pubs.usgs.gov/publication/ofr94666},
  note = {Source identifier: ofr94666}
}