Richterite
Della Ventura G, Robert J-L, Raudsepp M, Hawthorne F C
American Mineralogist 78 (1993) 633-640
Site occupancies in monoclinic amphiboles: Rietveld structure refinement of
synthetic magnesium cobalt potassium richterite
Sample: KCo40
Atomic parameters from ICSD
_database_code_amcsd 0001581
10.0817 18.021 5.2753 90 104.832 90 C2/m
atom     x     y     z occ Biso
Si1  .2763 .0856 .3037      0.4
Si2  .2846 .1707 .8040      0.4
Mg1      0 .0907    .5 .55  0.6
Co1      0 .0907    .5 .45  0.6
Mg2      0 .1792     0 .71  0.6
Co2      0 .1792     0 .29  0.6
Mg3      0     0     0  .5  0.6
Co3      0     0     0  .5  0.6
Na       0 .2758    .5  .5  0.9
Ca       0 .2758    .5  .5  0.9
K    .0189    .5 .0343  .5  2.3
O1   .1094 .0884 .2062      0.8
O2   .1178 .1742 .7224      0.8
OH3  .1059     0 .7106      0.8
O4   .3574 .2467 .7820      0.8
O5   .3424 .1315 .1024      1.1
O6   .3392 .1177 .5954      1.1
O7   .3302     0 .3072      1.2