@misc{indiciae633324f6ea14,
  title = {Beryl deposits of the Beecher No. 3-Black Diamond pegmatite, Custer County, South Dakota},
  author = {Jack Allison Redden},
  year = {1959},
  doi = {10.3133/b1072i},
  url = {https://pubs.usgs.gov/publication/b1072I},
  note = {Source identifier: b1072I}
}