@misc{indiciae2ecf811a6cad,
  title = {Alluvial ilmenite placer deposits, central Virginia},
  author = {James Pierson Minard and Eric R. Force and G.W. Hayes},
  year = {1976},
  doi = {10.3133/pp959h},
  url = {https://pubs.usgs.gov/publication/pp959H},
  note = {Source identifier: pp959H}
}