@misc{indiciae4f52d61d30eb,
  title = {Some magnetic properties of rocks from the Silverton Caldera area, western San Juan Mountains, Colorado},
  author = {M. E. Gettings and F. S. Fisher and P.E. Gettings and R. G. Luedke},
  year = {1994},
  doi = {10.3133/ofr94291},
  url = {https://pubs.usgs.gov/publication/ofr94291},
  note = {Source identifier: ofr94291}
}