Wadsleyite Hazen R M, Weinberger M B, Yang H, Prewitt C T American Mineralogist 85 (2000) 770-777 Comparative high-pressure crystal chemistry of wadsleyite, beta-(Mg_1-xFe_x)2SiO4, with x=0 and 0.25 Sample: P = 8.49 GPa, X = .00 _database_code_amcsd 0002443 5.6261 11.3158 8.1132 90 90 90 Imma atom x y z Mg1 0 0 0 Mg2 0 .25 .9713 Mg3 .25 .1275 .25 Si 0 .1199 .6173 O1 0 .25 .2208 O2 0 .25 .7192 O3 0 .9907 .2550 O4 .2591 .1222 .9929