Richterite
Hawthorne F C, Della Ventura G, Robert J-L, Welch M D, Jenkins D M
American Mineralogist 82 (1997) 708-716
A Rietveld and infrared study of synthetic amphiboles along the
potassium-richterite-tremolite join
Sample: Kr40
_database_code_amcsd 0001917
9.9548 18.021 5.2735 90 104.724 90 C2/m
atom     x     y     z occ
Si1  .2784 .0847 .2986
Si2  .2839 .1701 .8008
Mg1      0 .0874    .5
Mg2      0 .1793     0
Mg3      0     0     0
Ca4      0 .2761    .5  .8
Na4      0 .2761    .5  .2
KA    .010    .5  .022  .2
O1   .1147 .0884 .2217
O2   .1041 .1703 .7185
O3   .1050     0 .7163
O4   .3529 .2493 .7801
O5   .3389 .1302 .0895
O6   .3366 .1150 .5980
O7   .3330     0 .3057