@misc{indiciaecb4093846362,
  title = {Contributions to economic geology (short papers and preliminary reports), 1923-1924, Part I, Metals and nonmetals except fuels. Ilsemannite at Ouray, Utah},
  author = {F. L. Hess},
  year = {1925},
  doi = {10.3133/b750a},
  url = {https://pubs.usgs.gov/publication/b750A},
  note = {Source identifier: b750A}
}