@misc{indiciae1da9514b9a56,
  title = {Comparison of geological, geophysical, and geochemical prospecting methods at the Malachite mine, Jefferson County, Colorado},
  author = {Lyman C. Huff},
  year = {1963},
  doi = {10.3133/b1098c},
  url = {https://pubs.usgs.gov/publication/b1098C},
  note = {Source identifier: b1098C}
}