@misc{indiciae9fcf58601c78,
  title = {Esperanzaite, NaCa2Al2 (As(5+)O4)2F4(OH)2H2O, a new mineral species from the La Esperanza Mine, Mexico; descriptive mineralogy and atomic arrangement},
  author = {E.E. Foord and J.M. Hughes and F. Cureton and C. H. Maxwell and A.U. Falster and A.J. Sommer and P.F. Hlava},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70021871},
  note = {Source identifier: 70021871}
}