Richterite
Della Ventura G, Robert J-L, Raudsepp M, Hawthorne F C, Welch M D
American Mineralogist 82 (1997) 291-301
Site occupancies in synthetic monoclinic amphiboles: Rietveld structure
refinement and infrared spectroscopy of (nickel, magnesium, cobalt)-richterite
Sample: Co80
_database_code_amcsd 0001884
9.9568 18.049 5.2742 90 104.413 90 C2/m
atom     x     y     z occ
Si1  .2835 .0841 .2896
Si2  .2866 .1692 .8041
Mg1      0 .0889    .5 .18
Co1      0 .0889    .5 .82
Mg2      0 .1802     0 .28
Co2      0 .1802     0 .72
Mg3      0     0     0 .21
Co3      0     0     0 .79
Ca4      0 .2740    .5  .5
Na4      0 .2740    .5  .5
NaA      0 .4805     0
O1   .1136 .0872 .2163
O2   .1157 .1722 .7300
O3   .1099     0 .7000
O4   .3573 .2454 .7735
O5   .3487 .1274 .0918
O6   .3449 .1134 .5883
O7   .3467     0 .3055