@misc{indiciaed53114b09268,
  title = {Rapid evaluation of heavy minerals in stream sediments of the Prairie Divide area of northern Colorado: A tool for Kimberlite exploration},
  author = {V. L. Leighton and M. E. McCallum},
  year = {1979},
  doi = {10.3133/ofr79761},
  url = {https://pubs.usgs.gov/publication/ofr79761},
  note = {Source identifier: ofr79761}
}