@misc{indiciae7e8b60072a1b,
  title = {Deformation, geochemistry, and origin of massive sulfide deposits, Gossan lead district, Virginia},
  author = {J. E. Gair and J. F. Slack},
  year = {1984},
  doi = {10.2113/gsecongeo.79.7.1483},
  url = {https://pubs.usgs.gov/publication/70013341},
  note = {Source identifier: 70013341}
}