@misc{indiciae0a39e2917b6c,
  title = {Virginia mica mines},
  author = {R. W. Lemke and J. H. Stillwell and R. L. Smith and E. Ellingwood and R. H. Jahns and R. Miller},
  year = {1944},
  doi = {10.3133/ofr4473},
  url = {https://pubs.usgs.gov/publication/ofr4473},
  note = {Source identifier: ofr4473}
}