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: Kr20
Note, Kr0 sample from Smelik et al (1994) Am Min 79, 1110-1122
_database_code_amcsd 0001918
9.924 18.030 5.2749 90 104.67 90 C2/m
atom     x     y     z occ
Si1  .2787 .0849 .3016
Si2  .2833 .1697 .8017
Mg1      0 .0877    .5
Mg2      0 .1794     0
Mg3      0     0     0
Ca4      0 .2768    .5  .9
Na4      0 .2768    .5  .1
KA   -.005    .5 -.007  .2
O1   .1204 .0915 .2188
O2   .1078 .1697 .7199
O3   .1055     0 .7350
O4   .3580 .2500 .7860
O5   .3340 .1318 .0756
O6   .3409 .1166 .5923
O7   .3295     0 .2875