@misc{indiciaeac10a18a40fe,
  title = {Interpretation of the composition of trioctahedral micas},
  author = {Margaret D. Foster},
  year = {1960},
  doi = {10.3133/pp354b},
  url = {https://pubs.usgs.gov/publication/pp354B},
  note = {Source identifier: pp354B}
}