@misc{indiciaea6754fc351e1,
  title = {Mica deposits of the southeastern Piedmont, Part 1, General features},
  author = {R. H. Jahns and W. R. Griffitts and E. W. Heinrich},
  year = {1952},
  doi = {10.3133/pp248a},
  url = {https://pubs.usgs.gov/publication/pp248A},
  note = {Source identifier: pp248A}
}