@misc{indiciaed7d603d8e5c0,
  title = {Rutile in Precambrian sillimanite-quartz gneiss and related rocks, east-central Front Range, Colorado},
  author = {Sherman P. Marsh and Douglas M. Sheridan},
  year = {1976},
  doi = {10.3133/pp959g},
  url = {https://pubs.usgs.gov/publication/pp959G},
  note = {Source identifier: pp959G}
}