Na2SiSi2O7
Fleet M E, Henderson G S
Physics and Chemistry of Minerals 22 (1995) 383-386
Soidium trisilicate: A new high-pressure silicate structure (Na2Si[Si2O7])
_database_code_amcsd 0007927
8.922 4.8490 11.567 90 102.64 90 C2/c
atom      x      y      z B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Si1  .45777 .28452 .11515 .00142 .00254 .00077 -.00001 .00021 -.00009
Si2     .25    .25     .5 .00140 .00255 .00079 -.00001 .00023  .00009
Na    .1477 .29478 .18326 .00547 .00693 .00376 -.00023 .00216 -.00070
O1    .3608 .56388 .12681 .00211 .00369 .00101  .00070 .00015 -.00003
O2   .36502 .04726 .03572 .00203 .00351 .00140 -.00069 .00023 -.00050
O3   .37597 .36728 .41000 .00181 .00521 .00136  .00024 .00061  .00067
O4        0 .64740    .25 .00361 .00433 .00090       0 .00026       0