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 = .00 GPa, X = .25 _database_code_amcsd 0002445 5.7194 11.5114 8.3021 90 90 90 Imma atom x y z occ Mg1 0 0 0 .712 Fe1 0 0 0 .288 Mg2 0 .25 .9706 .868 Fe2 0 .25 .9706 .132 Mg3 .25 .1255 .25 .710 Fe3 .25 .1255 .25 .290 Si 0 .1209 .6166 O1 0 .25 .2174 O2 0 .25 .7163 O3 0 .9875 .2563 O4 .2626 .1231 .9924