@misc{indiciae81b2ae10be16,
  title = {Analysis of a supposed clay fulgurite from Ontario},
  author = {M. K. Carron and M.D. Lowman},
  year = {1961},
  doi = {10.1038/190040a0},
  url = {https://pubs.usgs.gov/publication/70220601},
  note = {Source identifier: 70220601}
}