Richterite
Senda K, Ishida K, Jenkins D M
American Mineralogist 90 (2005) 1062-1071
X-ray Rietveld refinement and FTIR spectra of synthetic (Si,Ge)-richterites
Sample: Ge2Ri, Si74Ge26
_database_code_amcsd 0003793
10.0144 18.071 5.3058 90 104.625 90 C2/m
atom     x     y     z  occ Biso
NaA     .0    .5    .0  .44 2.68
Ca4     .0 .2782    .5  .45 1.58
Na4     .0 .2782    .5  .55 1.58
Mg1     .0 .0878    .5       .47
Mg2     .0 .1785    .0       .61
Mg3     .0    .0    .0       .42
Si1  .2805 .0842  .299  .83  .51
Ge1  .2805 .0842  .299  .17  .51
Si2  .2855 .1721 .8045  .66  .50
Ge2  .2855 .1721 .8045  .34  .50
O1    .116 .0859  .221       .69
O2    .114 .1696  .727       .64
OH3   .107    .0  .718       .64
O4    .357 .2475  .791       .96
O5    .346 .1323  .109       .86
O6    .341 .1134  .601       .84
O7    .339    .0  .268       .93