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 = 2.72 GPa, X = .00
_database_code_amcsd 0002440
5.6731 11.4114 8.2067 90 90 90 Imma
atom     x     y     z
Mg1      0     0     0
Mg2      0   .25 .9708
Mg3    .25 .1274   .25
Si       0 .1201 .6170
O1       0   .25 .2197
O2       0   .25 .7162
O3       0 .9890 .2557
O4   .2597 .1216 .9928