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: Ge8Ri, Si0Ge100
_database_code_amcsd 0003796
10.3244 18.282 5.3994 90 106.015 90 C2/m
atom     x     y     z  occ Biso
NaA     .0    .5    .0  .46 2.68
Ca4     .0 .2745    .5  .42 1.58
Na4     .0 .2745    .5  .58 1.58
Mg1     .0 .0868    .5       .47
Mg2     .0 .1781    .0       .61
Mg3     .0    .0    .0       .42
Ge1  .2795 .0856 .3090       .51
Ge2  .2870 .1745 .8147       .50
O1    .107 .0841  .218       .69
O2    .113 .1705  .731       .64
OH3   .104    .0  .718       .64
O4    .363 .2520  .780       .96
O5    .350 .1424  .148       .86
O6    .345 .1043  .631       .84
O7    .342    .0  .246       .93