@misc{indiciaefc90a7986ee7,
  title = {Precision and detection limits of certain minor and trace elements in silicates by electron microprobe analysis},
  author = {Robert H. Heidel},
  year = {2002},
  doi = {10.1021/ac60307a033},
  url = {https://pubs.usgs.gov/publication/70227133},
  note = {Source identifier: 70227133}
}