Guilleminite Cooper M A, Hawthorne F C The Canadian Mineralogist 33 (1995) 1103-1109 The crystal structure of guilleminite, a hydrated Ba-U-Se sheet structure _database_code_amcsd 0005466 7.084 7.293 16.881 90 90 90 P2_1nm atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ba 0 .0765 0 .0083 .0173 .0376 -.0005 0 0 U1 .8208 .3912 .5 .0023 .0149 .0151 .0004 0 0 U2 .3222 .3942 .3917 .0024 .0161 .0117 -.0002 -.0009 .0007 Se .8302 .3713 .2959 .0073 .0255 .0132 .0007 .0014 .0017 O1 .840 .146 .5 .0171 O2 .504 .325 .5 .0113 O3 .140 .403 .5 .0063 O4 .298 .363 0 .0289 O5 .357 .636 .397 .0161 O6 .303 .147 .385 .0225 O7 .994 .433 .365 .0261 O8 .292 .428 .250 .0169 O9 .655 .364 .362 .0236 Wat1 .617 .119 0 .0213 Wat2 .154 .099 .158 .0589