@misc{indiciaeb2b94ac685cc,
  title = {Fe-Ca-phosphate, Fe-silicate, and Mn-oxide minerals in concretions from the Monterey Formation},
  author = {M.D. Medrano and D.Z. Piper},
  year = {1997},
  doi = {10.1016/s0009-2541(96)00170-2},
  url = {https://pubs.usgs.gov/publication/70019860},
  note = {Source identifier: 70019860}
}