Ca Na2 O4 Si
Barth T, Posnjak E
Zeitschrift fur Kristallographie 81 (1932) 370-375
Silicate structures of the cristobalite type: II. The crystal structure
of Na2 Ca Si O4
_cod_database_code 1010111
_database_code_amcsd 0017042
7.48 7.48 7.48 90 90 90 P2_13
atom     x     y     z
Na1     .5    .5    .5
Na2    .75   .75   .75
Ca1  -.007 -.007 -.007
Si1   .253  .253  .253
O1    .133  .133  .133
O2    .556  .667  .222