@misc{indiciaebbfd151d1391,
  title = {Carbonatites in the Wet Mountains area, Custer and Fremont Counties, Colorado — Chemical and mineralogical data},
  author = {T.J. Armbrustmacher and I. K. Brownfield},
  year = {1978},
  doi = {10.3133/ofr78177},
  url = {https://pubs.usgs.gov/publication/ofr78177},
  note = {Source identifier: ofr78177}
}