@misc{indiciae772338ca192b,
  title = {Mineral paragenesis and zoning in the central Kentucky mineral district},
  author = {J. L. Jolly and A. V. Heyl},
  year = {1964},
  doi = {10.2113/gsecongeo.59.4.596},
  url = {https://pubs.usgs.gov/publication/70221128},
  note = {Source identifier: 70221128}
}