K[(UO2)(AsO4)](H2O)3
Locock A J, Burns P C, Duke M J M, Flynn T M
The Canadian Mineralogist 42 (2004) 973-996
Monovalent cations in structures of the meta-autunite group
Sample: KUAs
7.1669 7.1669 17.867 90 90 90 *P4/ncc
.25 -.25 0
atom    x     y     z  occ Uiso
U     .25   .25 .0529      .014
As    .75   .25     0      .016
O1    .25   .25 .1517      .027
O2    .25   .25 .9536      .030
O3  .7143 .0671 .4433      .020
O4  .1624 .9909 .3135 .773 .061
K4  .1624 .9909 .3135 .227 .061