Tundrite-(Ce)
Shumyatskaya N G, Voronkov A A, Ilyukhin V V, Belov N V
Soviet Physics Crystallography 21 (1976) 399-405
Tundrite, Na2Ce2TiO2[SiO4](CO3)2 -
refinement of the crystal structure and chemical formula
Locality: Khibiny Massif, Kola Peninsula, Russia
Note: y(O11) adjusted to match reported bond lengths
_database_code_amcsd 0015572
7.560 13.957 5.040 101.12 70.87 100.02 P-1
atom     x     y     z Biso
Na1      0     0    .5 1.82
Na2  .1405 .4747 .1748 2.08
Na3     .5    .5    .5 3.26
Ce1  .6565 .7787 .5923  .83
Ce2  .2181 .7776 .3103 1.04
Ti   .6100 .9997 .1947  .10
Si   .9610 .8578 .9115  .37
C1   .7914 .3534 .2433 1.22
C2   .5993 .6535 .0623  .71
O1   .9335 .7563 .7068  .66
O2   .7925 .9172 .9089  .81
O3   .1613 .9167 .7245  .70
O4   .9563 .8430 .2243  .88
O5   .4053 .9185 .0677  .81
O6   .5504 .9189 .4993  .74
O7   .8735 .3813 .9915  .01
O8   .8096 .4043 .4623 2.41
O9   .3343 .3761 .7702 1.46
O10  .4046 .3923 .1771 1.37
O11  .3076 .7358 .7489 1.24
O12  .5458 .7415 .1339  .91