Calciobetafite
Mazzi F, Munno R
American Mineralogist 68 (1983) 262-276
Calciobetafite (new mineral of the pyrochlore group) and related minerals from
Campi Flegrei, Italy; crystal structures of polymignyte and zirkelite:
comparison with pyrochlore and zirconolite
_database_code_amcsd 0000891
10.2978 10.2978 10.2978 90 90 90 *Fd3m
.125 .125 .125
atom      x    y    z  occ B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ca        0    0    0 .685 .00181 .00181 .00181 -.00013 -.00013 -.00013
Na        0    0    0 .076 .00181 .00181 .00181 -.00013 -.00013 -.00013
Th        0    0    0 .039 .00181 .00181 .00181 -.00013 -.00013 -.00013
U         0    0    0 .039 .00181 .00181 .00181 -.00013 -.00013 -.00013
Ce        0    0    0 .161 .00181 .00181 .00181 -.00013 -.00013 -.00013
Ti       .5   .5   .5 .535 .00222 .00222 .00222 -.00058 -.00058 -.00058
Nb       .5   .5   .5 .446 .00222 .00222 .00222 -.00058 -.00058 -.00058
Ta       .5   .5   .5 .019 .00222 .00222 .00222 -.00058 -.00058 -.00058
O1   -.1771 .125 .125      .00256 .00179 .00179       0       0  .00093
O2     .125 .125 .125   .5 .00416 .00416 .00416       0       0       0
F      .125 .125 .125   .5 .00416 .00416 .00416       0       0       0