@misc{indiciaed56db84e9242,
  title = {Maps showing mineral resource assessment for porphyry and stockwork deposits of copper, molybdenum, and tungsten and for stockwork and disseminated deposits of gold and silver in the Butte 1° x 2° quadrangle, Montana},
  author = {J. E. Elliott and S. H. Moll and C. A. Wallace and G. K. Lee and J.C. Antweiler and D. J. Lidke and L. C. Rowan and W. F. Hanna and C. M. Trautwein and John L. Dwyer},
  year = {1993},
  doi = {10.3133/i2050f},
  url = {https://pubs.usgs.gov/publication/i2050F},
  note = {Source identifier: i2050F}
}