@misc{indiciaeae7ff5a1472e,
  title = {The effect of natural weathering on the chemical and isotopic compositions of biotites},
  author = {Norbert Clauer and J. R. O’Neil and C. Bonnot-Courtois},
  year = {1982},
  doi = {10.1016/0016-7037(82)90115-6},
  url = {https://pubs.usgs.gov/publication/70011505},
  note = {Source identifier: 70011505}
}