@misc{indiciae6f42f59e5733,
  title = {Geology and geochemistry of the Omai Mine area, Omai SW, Guyana},
  author = {Stephen P. Collings},
  year = {1970},
  doi = {10.3133/ofr6955},
  url = {https://pubs.usgs.gov/publication/ofr6955},
  note = {Source identifier: ofr6955}
}