@misc{indiciae215a8b1e63d6,
  title = {Bedrock geology and ore deposits of the Palmer quadrangle, Marquette County, Michigan, with a section on the Empire Mine},
  author = {Jacob Eugene Gair and Tsu-Ming Han},
  year = {1975},
  doi = {10.3133/pp769},
  url = {https://pubs.usgs.gov/publication/pp769},
  note = {Source identifier: pp769}
}