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: Ni80
_database_code_amcsd 0001879
9.8886 17.933 5.2525 90 104.461 90 C2/m
atom     x     y     z occ
Si1  .2790 .0847 .2941
Si2  .2886 .1696 .8039
Mg1      0 .0890    .5 .12
Ni1      0 .0890    .5 .88
Mg2      0 .1777     0 .32
Ni2      0 .1777     0 .68
Mg3      0     0     0 .13
Ni3      0     0     0 .87
Ca4      0 .2739    .5  .5
Na4      0 .2739    .5  .5
NaA      0 .4770     0
O1   .1106 .0872 .2138
O2   .1171 .1683 .7296
O3   .1055     0 .7129
O4   .3598 .2467 .7802
O5   .3459 .1305 .0911
O6   .3434 .1124 .5925
O7   .3430     0 .2980