@misc{indiciae7b276531efd3,
  title = {Chemical composition of weathered and less weathered strata of the Meade Peak Phosphatic Shale Member of the Permian Phosphoria Formation},
  author = {J. R. Herring and R. I. Grauch and G. A. Desborough and S. A. Wilson and R. G. Tysdal},
  year = {2000},
  doi = {10.3133/ofr99147c},
  url = {https://pubs.usgs.gov/publication/ofr99147C},
  note = {Source identifier: ofr99147C}
}