@misc{indiciaebc5f5a332bb9,
  title = {Tephroite in California manganese deposits},
  author = {D. F. Hewett and C. W. Chesterman and B.W. Troxel},
  year = {1961},
  doi = {10.2113/gsecongeo.56.1.39},
  url = {https://pubs.usgs.gov/publication/70220641},
  note = {Source identifier: 70220641}
}