Calcirtite
Pyatenko Y A, Pudovkina Z V
Soviet Physics Crystallography 6 (1961) 155-157
The crystal structure of calcirtite; a new derivative structure of CaF2-CeO2 type
Note: ideal structure
Locality: Gornoe Ozero alkaline-ultrabasic Massif, Yakutia, Russia
_database_code_amcsd 0019375
15.30 15.30 10.20 90 90 90 I4_1/acd
atom    x    y    z occ
Ca1     0    0  .25
Ca2   1/6  1/6  .25 .50
Zr2   1/6  1/6  .25 .50
Ti3   1/3  1/3  .25
Zr4   1/6    0   .5
O1    .25  .25 .125
O2    .25 1/12 .125
O3    .25 1/12 .375
O4   1/12 1/12 .125
O5   1/12 1/12 .625