Beta-roselite
Joswig W, Paulus E F, Liebscher B
Zeitschrift fur Kristallographie 219 (2004) 341-342
Crystal structure of dicalcium (cobalt,magnesium) diarsenate dihydrate,
Ca2(Co0.532Mg0.468)[AsO4]2*2H2O, hydrogen bonding in talmessite
Locality: Bou-Azzer, Morocco
_database_code_amcsd 0011127
5.884 6.981 5.564 97.33 108.93 108.18 P-1
atom       x      y      z  occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ca   -.29524 .23736 .34744           .00887 .00931 .00929 .00308 .00387 .00215
Co         0      0      0 .532       .0072  .0070  .0086 .00237 .00363 .00184
Mg         0      0      0 .468       .0072  .0070  .0086 .00237 .00363 .00184
As    .33318 .24575 .67079           .00586 .00565 .00682 .00189 .00270 .00204
O1     .3405  .1288  .9213            .0091  .0121  .0104  .0037  .0045  .0066
O2     .2399  .0505  .4002            .0138  .0095  .0087  .0044  .0019 -.0009
O3     .1537  .3907  .6412            .0107  .0093  .0132  .0058  .0050  .0039
O4     .6411  .3849  .7158            .0061  .0103  .0123  .0001  .0040  .0023
Ow    -.0463  .2744  .0737            .0085  .0073  .0092  .0013  .0025  .0017
H1      .081   .358   .126      .023
H2     -.123   .302  -.031      .026