@misc{indiciaed89c680eea44,
  title = {Scheelite in the Boulder District, Colorado},
  author = {Ogden Tweto},
  year = {1947},
  doi = {10.2113/gsecongeo.42.1.47},
  url = {https://pubs.usgs.gov/publication/70214500},
  note = {Source identifier: 70214500}
}