@misc{indiciae1f43068c92f0,
  title = {The complex of alkaline rocks at Iron Hill, Powederhorn district, Gunnison County, Colorado},
  author = {T.J. Armbrustmacher},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70188668},
  note = {Source identifier: 70188668}
}