@misc{indiciaeba0091f49ed7,
  title = {Our mineral supplies--Mica, monazite, and lithium minerals},
  author = {W. T. Schaller},
  year = {1919},
  doi = {10.3133/b666x},
  url = {https://pubs.usgs.gov/publication/b666X},
  note = {Source identifier: b666X}
}