@misc{indiciaeded94d77d00c,
  title = {Distribution of selected accessory minerals in the Caribou stock, Boulder County, Colorado},
  author = {G. J. Neuerburg},
  year = {1967},
  doi = {10.3133/i496},
  url = {https://pubs.usgs.gov/publication/i496},
  note = {Source identifier: i496}
}