@misc{indiciae34c2fd4ad893,
  title = {Reconnaissance geologic study of the Vazante zinc district, Minas Gerais, Brazil},
  author = {Charles H. Thorman and Samir Nahass},
  year = {1977},
  doi = {10.3133/ofr77630},
  url = {https://pubs.usgs.gov/publication/ofr77630},
  note = {Source identifier: ofr77630}
}