Fersmite
Cummings J P, Simonsen S H
American Mineralogist 55 (1970) 90-97
The crystal structure of calcium niobate (CaNb2O6)
Locality: synthetic
_database_code_amcsd 0000196
14.926 5.752 5.204 90 90 90 Pbcn
atom     x     y     z   Biso B(1,1) B(2,2) B(3,3) B(1,2)  B(1,3) B(2,3)
Ca       0 .2244   .75        .00048 .00235 .00283      0 -.00034      0
Nb   .1653 .3166 .2987        .00002 .00098 .00332 .00004  .00011 .00030
O1   .0893 .0997 .4040 1.4988
O2   .1003 .4280 .0056 1.8431
O3   .2576 .1351 .1266  .4638