Durangite
Downs G W, Yang B N, Thompson R M, Wenz M D, Andrade M B
Acta Crystallographica E68 (2012) i86-i87
Redetermination of durangite, NaAl(AsO4)F
Locality: the Barranca mine, Coneto de Comonfort, Durango, Mexico
_database_code_amcsd 0019593
6.5789 8.5071 7.0212 90 115.447 90 C2/c
atom      x       y      z occ   Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Na       .5  .17173    .25 .95 .01324  .0098  .0063  .0208      0  .0039      0
Li       .5  .17173    .25 .05 .01324  .0098  .0063  .0208      0  .0039      0
Al        0       0      0 .91 .00554 .00567  .0052 .00565 .00045 .00233 .00008
Fe        0       0      0 .09 .00554 .00567  .0052 .00565 .00045 .00233 .00008
As        0 .314545    .25     .00504 .00470 .00455 .00563      0 .00199      0
O1   .19850  .43542 .41553     .00955  .0072  .0093  .0103 -.0026  .0020 -.0032
O2   .10283  .20307 .11309     .00838  .0097  .0071  .0103 -.0003  .0061 -.0020
F         0  .06705    .75 .73 .00719  .0096  .0067  .0056      0  .0036      0
OH        0  .06705    .75 .27 .00719  .0096  .0067  .0056      0  .0036      0