@misc{indiciae903b9f0b515e,
  title = {Niobium and gold distribution, Monticello and Sierra quadrangles, Socorro and Sierra Counties, New Mexico},
  author = {W. R. Griffitts and H. V. Alminas and E. L. Mosier},
  year = {1972},
  doi = {10.3133/ofr72142},
  url = {https://pubs.usgs.gov/publication/ofr72142},
  note = {Source identifier: ofr72142}
}