@misc{indiciae4caa89edf141,
  title = {Argentian cryptomelane and bromargyrite in volcanic rocks near Silver Cliff, Colorado},
  author = {Fred A. Hildebrand and Elwin L. Mosier},
  year = {1974},
  doi = {10.3133/b1382c},
  url = {https://pubs.usgs.gov/publication/b1382C},
  note = {Source identifier: b1382C}
}