@misc{indiciae97ee24529bbc,
  title = {Copper-bearing quartzite near Watersmeet, Michigan},
  author = {William F. Cannon},
  year = {1980},
  doi = {10.3133/ofr80390},
  url = {https://pubs.usgs.gov/publication/ofr80390},
  note = {Source identifier: ofr80390}
}