@misc{indiciaef5430c83b4a9,
  title = {Analyses of rocks from the laboratory of the United States Geological Survey, 1880-1903},
  author = {F. W. Clarke},
  year = {1904},
  doi = {10.3133/b228},
  url = {https://pubs.usgs.gov/publication/b228},
  note = {Source identifier: b228}
}