@misc{indiciae92952ae86ad7,
  title = {Comments on the origin of features in mineral and rock spectra detectable in the three-micrometer range},
  author = {Graham R. Hunt},
  year = {1977},
  doi = {10.3133/ofr77726},
  url = {https://pubs.usgs.gov/publication/ofr77726},
  note = {Source identifier: ofr77726}
}