@misc{indiciae3440d6c0d044,
  title = {Negative pH, efflorescent mineralogy, and consequences for environmental restoration at the iron mountain superfund site, California},
  author = {D. Kirk Nordstrom and Charles N. Alpers},
  year = {1999},
  doi = {10.1073/pnas.96.7.3455},
  url = {https://pubs.usgs.gov/publication/70021746},
  note = {Source identifier: 70021746}
}