@misc{indiciae29dca9312a6c,
  title = {Ion-exchange of clinoptilolite-rich rocks in Argo drain water at Idaho Springs, Colorado, and related experimental aspects},
  author = {G. A. Desborough},
  year = {1993},
  doi = {10.3133/ofr93321},
  url = {https://pubs.usgs.gov/publication/ofr93321},
  note = {Source identifier: ofr93321}
}