Richterite
Della Ventura G, Robert J-L, Raudsepp M, Hawthorne F C
American Mineralogist 78 (1993) 633-640
Site occupancies in monoclinic amphiboles: Rietveld structure refinement of
synthetic magnesium cobalt potassium richterite
Sample: KNi0
Atomic parameters from ICSD
_database_code_amcsd 0001574
10.0547 17.997 5.2746 90 104.832 90 C2/m
atom     x     y     z occ Biso
Si1  .2761 .0859 .3013      0.4
Si2  .2843  .171 .8024      0.4
Mg1      0 .0895    .5      0.6
Mg2      0 .1798     0      0.6
Mg3      0     0     0      0.6
Na       0 .2761    .5  .5  0.9
Ca       0 .2761    .5  .5  0.9
K    .0213    .5 .0278  .5  2.3
O1   .1079  .088 .2149      0.8
O2   .1136 .1716 .7176      0.8
OH3  .1078     0 .7236      0.8
O4   .3542 .2486 .7854      0.8
O5   .3345   .13 .0945      1.1
O6   .3399 .1159  .603      1.1
O7   .3271     0 .3072      1.2