@misc{indiciaee7c551b4cf43,
  title = {Relations between specific gravity and chemical composition for a suite of igneous and metamorphic rocks},
  author = {Edward J. Young and G.R. Olhoeft},
  year = {1976},
  doi = {10.3133/ofr76809},
  url = {https://pubs.usgs.gov/publication/ofr76809},
  note = {Source identifier: ofr76809}
}