@misc{indiciae2234567b6a2d,
  title = {Understanding Contaminants Associated with Mineral Deposits},
  author = {Philip L. Verplanck and Stan E. Church and Kathleen S. Smith},
  year = {2007},
  doi = {10.3133/fs20073079},
  url = {https://pubs.usgs.gov/publication/fs20073079},
  note = {Source identifier: fs20073079}
}