@misc{indiciaee183b16d7a77,
  title = {Age of mineralization at Summitville, Colorado, as indicated by K-Ar dating of Alunite},
  author = {H. H. Mehnert and P. W. Lipman and T. A. Steven},
  year = {1973},
  doi = {10.2113/gsecongeo.68.3.399},
  url = {https://pubs.usgs.gov/publication/70206955},
  note = {Source identifier: 70206955}
}