@misc{indiciae52609cd837d7,
  title = {Manganese carbonate mineralization in the Molango district, Mexico},
  author = {P.M. Okita},
  year = {1992},
  doi = {10.2113/gsecongeo.87.5.1345},
  url = {https://pubs.usgs.gov/publication/70016899},
  note = {Source identifier: 70016899}
}