@misc{indiciaec823b923c78d,
  title = {Chapter 14 Rex Chert member of the Permian Phosphoria Formation: Composition, with emphasis on elements of environmental concern},
  author = {James R. Hein and B.R. McIntyre and R.B. Perkins and David Z. Piper and J. G. Evans},
  year = {2004},
  doi = {10.1016/s1874-2734(04)80016-0},
  url = {https://pubs.usgs.gov/publication/70208044},
  note = {Source identifier: 70208044}
}