@misc{indiciae7e54549d1c6d,
  title = {Ridgeway mica mine, Henry County, Virginia},
  author = {W.C. Stoll and J.J. Norton},
  year = {1943},
  doi = {10.3133/ofr4379},
  url = {https://pubs.usgs.gov/publication/ofr4379},
  note = {Source identifier: ofr4379}
}