Uranophane - alpha Stohl F V, Smith D K American Mineralogist 66 (1981) 610-625 The crystal chemistry of the uranyl silicate minerals Note: signs of y and z are changed for many of the atoms Locality: Shinkolobwe, Katanga _database_code_amcsd 0000837 15.858 6.985 6.641 90 97.55 90 P2_1 atom x y z Biso U1 .2557 .7822 .1344 0.8 U2 -.2557 .7822 .1344 0.8 Si1 .284 .281 .339 0.8 Si2 -.284 .281 .339 0.8 O1 .371 .795 .138 2.7 O2 -.371 .795 .138 2.7 O3 .143 .757 .123 1.3 O4 -.143 .757 .123 1.3 O5 .271 .453 .187 2.1 O6 -.271 .453 .187 2.1 O7 .258 .095 .181 2.1 O8 -.258 .095 .181 2.1 O9 .229 .292 .523 1.0 O10 -.229 .292 .523 1.0 O11 .381 .272 .432 2.2 O12 -.381 .272 .432 2.2 Wat1 .069 .345 .359 3.6 Wat2 .991 .010 .196 1.1 Wat3 .936 .610 .558 2.9 Wat4 .993 .507 .945 2.6 Ca .019 .672 .280 2.9