@misc{indiciaedfae161b1607,
  title = {Geochemical map showing distribution of chalcopyrite within the Chugach National Forest, Alaska},
  author = {R.J. Goldfarb and R. B. Tripp},
  year = {1985},
  doi = {10.3133/mf1645e},
  url = {https://pubs.usgs.gov/publication/mf1645E},
  note = {Source identifier: mf1645E}
}