@misc{indiciaec9808a9655a5,
  title = {Zeolite-bearing Cretaceous tuff in Beaverhead County, southwestern Montana},
  author = {Robert Carl Pearson},
  year = {1989},
  doi = {10.3133/ofr89297},
  url = {https://pubs.usgs.gov/publication/ofr89297},
  note = {Source identifier: ofr89297}
}