@misc{indiciae2f73c72297c3,
  title = {Preliminary map of chromite provinces in the conterminous United States},
  author = {T. P. Thayer and B. R. Lipin},
  year = {1979},
  doi = {10.3133/ofr79576r},
  url = {https://pubs.usgs.gov/publication/ofr79576R},
  note = {Source identifier: ofr79576R}
}