Rhodesite
Hesse K F, Liebau F, Merlino S
Zeitschrift fur Kristallographie 199 (1992) 25-48
Crystal structure of rhodesite, HK1-xNax+2yCa2-y(lB,3,22)(Si8O19)*(6-z)H2O,
from three localities and its relation to other silicates with dreier double layers
Locality: Trinity County, California, USA
_database_code_amcsd 0011014
23.4439 6.553 7.055 90 90 90 Pmam
atom      x     y      z  occ Uiso
K       .25 .4460      0 .255 .033
Ca1       0    .5      0 .246 .015
Ca2       0    .5     .5 .248 .010
Si1   .1168 .2891  .2200      .007
Si2   .1836 .5427     .5   .5 .006
Si3   .1022 .9303     .5   .5 .006
O1    .0592 .4076  .2476      .013
O2    .1718 .4077  .3114      .016
O3    .1164 .0629  .3144      .026
O4    .1345 .2573      0   .5 .007
O5    .1465 .7418     .5   .5 .014
O6    .0378 .8543     .5   .5 .023
O7      .25 .6081     .5  .25 .007
Wat8  .0390 .8399      0 .552 .088
Wat9  .3312 .7801      0 .517 .064
Wat10   .25 .0247  .1895 .278 .065