@misc{indiciae005174e107cd,
  title = {An Index to PGE-Ni-Cr Deposits and Occurrences in Selected Mineral-Occurrence Databases},
  author = {J. Douglas Causey and John P. Galloway and Michael L. Zientek},
  year = {2009},
  doi = {10.3133/ofr20091045},
  url = {https://pubs.usgs.gov/publication/ofr20091045},
  note = {Source identifier: ofr20091045}
}