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: KCo80
Atomic parameters from ICSD
_database_code_amcsd 0001583
10.1065 18.052 5.2743 90 104.844 90 C2/m
atom     x     y     z occ Biso
Si1  .2719 .0859 .3010      0.4
Si2  .2912 .1699 .8074      0.4
Mg1      0  .092    .5 .21  0.6
Co1      0  .092    .5 .79  0.6
Mg2      0 .1805     0  .3  0.6
Co2      0 .1805     0  .7  0.6
Mg3      0     0     0 .16  0.6
Co3      0     0     0 .84  0.6
Na       0 .2763    .5  .5  0.9
Ca       0 .2763    .5  .5  0.9
K    .0243    .5 .0240  .5  2.3
O1   .1067 .0897 .2101      0.8
O2   .1223 .1737 .7163      0.8
OH3  .0978     0 .7161      0.8
O4   .3578 .2448 .7786      0.8
O5   .3433 .1302 .1037      1.1
O6   .3414  .115 .5877      1.1
O7   .3342     0 .3111      1.2