@misc{indiciaeeff7f62ae104,
  title = {Characteristics of mineral deposit occurrences},
  author = {Ralph L. Erickson},
  year = {1982},
  doi = {10.3133/ofr82795},
  url = {https://pubs.usgs.gov/publication/ofr82795},
  note = {Source identifier: ofr82795}
}