@misc{indiciae1a55827694f8,
  title = {Chemical analyses and statistical summaries for samples of rock, minus-60-mesh (0.25-mm) stream sediment, and nonmagnetic heavy-mineral concentrate, Pyramid Roadless Area, El Dorado County, California},
  author = {Maurice A. Chaffee and D.L. Fey and D. J. Grimes and R. W. Leinz},
  year = {1983},
  doi = {10.3133/ofr83644},
  url = {https://pubs.usgs.gov/publication/ofr83644},
  note = {Source identifier: ofr83644}
}