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: Co40
_database_code_amcsd 0001882
9.9312 18.015 5.2731 90 104.245 90 C2/m
atom     x     y     z occ
Si1  .2831 .0860 .2973
Si2  .2831 .1705 .7968
Mg1      0 .0891    .5 .54
Co1      0 .0891    .5 .46
Mg2      0 .1793     0 .62
Co2      0 .1793     0 .38
Mg3      0     0     0 .53
Co3      0     0     0 .47
Ca4      0 .2738    .5 .55
Na4      0 .2738    .5 .45
NaA      0 .4817     0 .88
O1   .1178 .0893 .2156
O2   .1089 .1699 .7221
O3   .1094     0 .7144
O4   .3584 .2469 .7862
O5   .3450 .1303 .0837
O6   .3408 .1143 .5910
O7   .3400     0 .2826