@misc{indiciae979a158f73ed,
  title = {Naturally acidic surface and ground waters draining porphyry-related mineralized areas of the Southern Rocky Mountains, Colorado and New Mexico},
  author = {P. L. Verplanck and D. Kirk Nordstrom and D. J. Bove and G.S. Plumlee and R.L. Runkel},
  year = {2009},
  doi = {10.1016/j.apgeochem.2008.11.014},
  url = {https://pubs.usgs.gov/publication/70032785},
  note = {Source identifier: 70032785}
}