@misc{indiciae4197582dd1f9,
  title = {Some aspects of the geochemistry of sphalerite, Central City District, Colorado},
  author = {P.K. Sims and P. B. Barton},
  year = {1961},
  doi = {10.2113/gsecongeo.56.7.1211},
  url = {https://pubs.usgs.gov/publication/70220603},
  note = {Source identifier: 70220603}
}