@misc{indiciaeaf65753d6436,
  title = {Progressive oxidation of pyrite in five bituminous coal samples: An As XANES and 57 Fe Mössbauer spectroscopic study},
  author = {Allan Kolker and Frank E. Huggins},
  year = {2007},
  doi = {10.1016/j.apgeochem.2006.10.006},
  url = {https://pubs.usgs.gov/publication/70029960},
  note = {Source identifier: 70029960}
}