@misc{indiciae74e7fff17830,
  title = {Occurrence and origin of minerals in a chamosite-bearing coal of Late Permian age, Zhaotong, Yunnan, China},
  author = {S. Dai and C. L. Chou},
  year = {2007},
  doi = {10.2138/am.2007.2496},
  url = {https://pubs.usgs.gov/publication/70031087},
  note = {Source identifier: 70031087}
}