@misc{indiciaecf65fc10431e,
  title = {Gold and spectrographic analyses of 110 outcrop and 238 B-horizon soil samples from the western Vermilion District, northeastern Minnesota},
  author = {John B. McHugh and R.T. Hopkins and H. V. Alminas and G.T. Hill},
  year = {1992},
  doi = {10.3133/ofr92615a},
  url = {https://pubs.usgs.gov/publication/ofr92615A},
  note = {Source identifier: ofr92615A}
}