@misc{indiciae939eba60edbb,
  title = {Diamonds in an upper mantle peridotite nodule from kimberlite in southern Wyoming},
  author = {M. E. McCallum and D.H. Eggler},
  year = {1976},
  doi = {10.1126/science.192.4236.253},
  url = {https://pubs.usgs.gov/publication/70010196},
  note = {Source identifier: 70010196}
}