@misc{indiciaea56206f8a134,
  title = {Age and origin of the Darrough Felsite, southern Toiyabe Range, Nevada},
  author = {R. C. Speed and E.H. McKee},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70162517},
  note = {Source identifier: 70162517}
}