@misc{indiciae17470579f135,
  title = {Mineralogy of uranium ore from the Crow Butte uranium deposit, Oligocene Chadron Formation, northwestern Nebraska},
  author = {Paula L. Hansley and S.P. Collings and I. K. Brownfield and G.L. Skipp},
  year = {1989},
  doi = {10.3133/ofr89225},
  url = {https://pubs.usgs.gov/publication/ofr89225},
  note = {Source identifier: ofr89225}
}