@misc{indiciae7e9ba275f4e0,
  title = {Mineral deposit density; an update},
  author = {W. David Menzie and David M. Sutphin and Dan L. Mosier and James D. Bliss and Klaus J. Schulz},
  year = {2001},
  doi = {10.3133/pp1640a},
  url = {https://pubs.usgs.gov/publication/pp1640A},
  note = {Source identifier: pp1640A}
}