Sklodowskite Mokeeva V I Soviet Physics Doklady 4 (1959) 27-29 The crystal structure of sklodowskite _database_code_amcsd 0015594 16.74 7.01 6.59 90 96 90 I2/m atom x y z Mg 0 0 .5 U .259 0 .115 Si .219 0 .588 OSi1 .273 0 .800 OSi2 .125 0 .625 OSi3 .240 .187 .442 OU1 .143 0 .038 OU2 .373 0 .189 Wat .027 .208 .304