@misc{indiciae14ed168544a5,
  title = {Distribution of copper in heavy-mineral-concentrate samples from the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina},
  author = {W. R. Griffitts and J. W. Whitlow and K.A. Duttweiler and D. F. Siems and Theodore Botinelly},
  year = {1985},
  doi = {10.3133/ofr84843b},
  url = {https://pubs.usgs.gov/publication/ofr84843B},
  note = {Source identifier: ofr84843B}
}