Na[(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: NaUAs _database_code_amcsd 0005945 7.1504 7.1504 17.325 90 90 90 *P4/ncc .25 -.25 0 atom x y z occ Uiso U .25 .25 .0542 .018 As .75 .25 0 .020 O1 .25 .25 .1576 .031 O2 .25 .25 .9515 .036 O3 .7122 .0665 .4420 .029 O4 .1625 .9864 .3068 .75 .247 Na4 .1625 .9864 .3068 .25 .247