Dawsonite Frueh A J, Golightly J P The Canadian Mineralogist 9 (1967) 51-56 The crystal structure of dawsonite NaAl(CO3)(OH)2 Locality: McGill University, Montreal, Quebec, Canada _database_code_amcsd 0005083 6.710 10.411 5.58 90 90 90 Imam atom x y z Biso Na .25 .75 .25 .03 Al 0 .5 0 .03 C 0 .254 .25 .03 O1 0 .133 .25 .03 O2 0 .315 .052 .03 OH .18 .525 .25 .03