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: San Venanzo, Italy
_database_code_amcsd 0011015
23.428 6.557 7.064 90 90 90 Pmam
atom      x     y     z  occ Uiso
K       .25 .4487     0  .25 .036
Ca1       0    .5     0  .25 .015
Ca2       0    .5    .5  .25 .009
Si1   .1170 .2892 .2198      .008
Si2   .1837 .5417    .5   .5 .008
Si3   .1024 .9306    .5   .5 .006
O1    .0593 .4084 .2500      .016
O2    .1722 .4077 .3111      .015
O3    .1165 .0616 .3120      .024
O4    .1351 .2555     0   .5 .011
O5    .1460 .7394    .5   .5 .017
O6    .0375 .8583    .5   .5 .024
O7      .25 .6049    .5  .25 .013
Wat8  .0379 .8315     0   .5 .099
Wat9  .3317 .7792     0   .5 .074
Wat10   .25 .0204 .1874  .25 .102
Wat11   .25  .052    .5 .055 .090