@misc{indiciae153322a62ec6,
  title = {Chalcopyrite disease in sphalerite: pathology and epidemiology.},
  author = {P. B. Barton and P. M. Bethke},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/70014184},
  note = {Source identifier: 70014184}
}