Na(NpO2)(PO4)(H2O)3
Forbes T Z, Burns P C
The Canadian Mineralogist 45 (2007) 471-477
The crystal structures of X(NpO2)(PO4)(H2O)3 (X = K+, Na+, Rb+, NH4+) and
their relationship to the autunite group
Sample: NaP1
_database_code_amcsd 0006147
7.005 7.005 16.986 90 90 90 *P4/ncc
.25 -.25 0
atom       x     y     z occ Uiso
Na    -.4820 .1940 .6933 .25 .075
Np       .25   .25 .4478     .021
P        .75   .25    .5     .029
O1       .25   .25 .5500     .041
O2       .25   .25 .3462     .041
O3    -.2560 .4227 .5568     .045
Wat4A -.4820 .1940 .6933 .25 .075
Wat4B  .8480 .2600 .1996 .50 .049