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: Ni100
_database_code_amcsd 0001880
9.8927 17.926 5.2534 90 104.480 90 C2/m
atom     x     y     z occ
Si1  .2795 .0857 .2978
Si2  .2879 .1702 .8065
Ni1      0 .0882    .5
Ni2      0 .1768     0
Ni3      0     0     0
Ca4      0 .2741    .5 .51
Na4      0 .2741    .5 .49
NaA      0 .4783     0
O1   .1111 .0862 .2141
O2   .1152 .1689 .7272
O3   .1067     0 .7102
O4   .3581 .2476 .7772
O5   .3475 .1307 .1023
O6   .3400 .1122 .5999
O7   .3424     0 .3000