Metanatroautunite 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: NaUP _database_code_amcsd 0005944 6.9616 6.9616 17.2677 90 90 90 *P4/ncc .25 -.25 0 atom x y z occ Uiso U .25 .25 .0499 .017 P .75 .25 0 .021 O1 .25 .25 .1534 .032 O2 .25 .25 .9480 .032 O3 .7162 .0759 .4469 .028 O4 .170 .9794 .3099 .75 .188 Na4 .170 .9794 .3099 .25 .188