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: Ni60
_database_code_amcsd 0001878
9.8956 17.948 5.2567 90 104.413 90 C2/m
atom     x     y     z  occ
Si1  .2811 .0857 .2979
Si2  .2857 .1694 .7990
Mg1      0 .0885    .5  .30
Ni1      0 .0885    .5  .70
Mg2      0 .1777     0  .55
Ni2      0 .1777     0  .45
Mg3      0     0     0  .25
Ni3      0     0     0  .75
Ca4      0 .2745    .5 .535
Na4      0 .2745    .5 .465
NaA      0 .4812     0  .93
O1   .1132 .0875 .2211
O2   .1110 .1681 .7229
O3   .1066     0 .7067
O4   .3584 .2481 .7739
O5   .3455 .1300 .0914
O6   .3435 .1121 .5989
O7   .3415     0 .3070