@misc{indiciae2baf12bdde65,
  title = {Characterization of calcium isotopes in natural and synthetic barite},
  author = {E.M. Griffith and E.A. Schauble and T.D. Bullen and A. Paytan},
  year = {2008},
  doi = {10.1016/j.gca.2008.08.010},
  url = {https://pubs.usgs.gov/publication/70032949},
  note = {Source identifier: 70032949}
}