Rb[(UO2)(PO4)](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: RbUP
7.0106 7.0106 17.9772 90 90 90 *P4/ncc
.25 -.25 0
atom    x     y     z  occ Uiso
U     .25   .25 .0481      .016
P     .75   .25     0      .019
O1    .25   .25 .1468      .029
O2    .25   .25 .9487      .029
O3  .7270 .0756 .4492      .026
O4  .1738 .9769 .3157 .813 .055
Rb4 .1738 .9769 .3157 .187 .055