NaY9(SiO4)6O2
Gunawardane R P, Howie R A, Glasser F P
Acta Crystallographica B38 (1982) 1564-1566
Structure of the oxyapatite NaY9(SiO4)6O2
Note: apatite structure
_database_code_amcsd 0009765
9.334 9.334 6.759 90 90 120 P6_3/m
atom     x     y      z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na2    1/3   2/3 -.0019 .25 .711  .0034  .0034  .0019  .0017      0      0
Y2     1/3   2/3 -.0019 .75 .711  .0034  .0034  .0019  .0017      0      0
Y1   .2375 .0042    .25     .706  .0030  .0034  .0022 .00145      0      0
Si   .3723 .3994    .25      .26
O1   .2486 .3389  .4380     1.19
O2   .4868 .3171    .25      .98
O3   .5252 .4013    .75      .83
O4       0     0    .25      1.2