@misc{indiciae29a54718669e,
  title = {Geochemical characteristics of mineralized breccia pipes in the Red Mountain District, San Juan Mountains, Colorado},
  author = {Frederick S. Fisher and Willard P. Leedy},
  year = {1973},
  doi = {10.3133/b1381},
  url = {https://pubs.usgs.gov/publication/b1381},
  note = {Source identifier: b1381}
}