B2 Mg O7 U Gasperin M Acta Crystallographica C43 (1987) 2264-2266 Synthese et structure du diborouranate de magnesium, Mg B2 U O7. _cod_database_code 1001360 _database_code_amcsd 0010060 9.747 7.315 7.911 90 90 90 Pcam atom x y z U1 .0501 .2255 .25 Mg1 .4519 .2353 .25 B1 .2135 .5318 .25 B2 .2581 .8739 .25 O1 .2685 .3623 .25 O2 .8686 .0169 .25 O3 .0484 .2278 .4764 O4 .0750 .5444 .25 O5 .7997 .3147 .25 O6 .6268 .0745 .25