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: Ni40
_database_code_amcsd 0001877
9.9024 17.965 5.2603 90 104.361 90 C2/m
atom     x     y     z occ
Si1  .2863 .0857 .3002
Si2  .2815 .1681 .7954
Mg1      0 .0887    .5 .51
Ni1      0 .0887    .5 .49
Mg2      0 .1769     0 .73
Ni2      0 .1769     0 .27
Mg3      0     0     0 .48
Ni3      0     0     0 .52
Ca4      0 .2749    .5 .56
Na4      0 .2749    .5 .44
NaA      0 .4835     0 .88
O1   .1186 .0886 .2217
O2   .0992 .1698 .7145
O3   .1055     0 .7119
O4   .3533 .2486 .7747
O5   .3411 .1291 .0805
O6   .3407 .1111 .5987
O7   .3379     0 .2912