@misc{indiciae034a3f5c0621,
  title = {Permissive tracts for incompatible element deposits hosted in pegmatities, alkaline rocks, and carbonatities in Mauritania (phase V, deliverable 86), Chapter Q1 in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II)},
  author = {Cliff D. Taylor and John D. Horton},
  year = {2012},
  doi = {10.3133/ofr20131280q1},
  url = {https://pubs.usgs.gov/publication/ofr20131280Q1},
  note = {Source identifier: ofr20131280Q1}
}