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 = 5.23 GPa, X = .00
_database_code_amcsd 0002441
5.6515 11.3688 8.1630 90 90 90 Imma
atom     x     y     z
Mg1      0     0     0
Mg2      0   .25 .9711
Mg3    .25 .1273   .25
Si       0 .1199 .6170
O1       0   .25 .2204
O2       0   .25 .7184
O3       0 .9900 .2549
O4   .2601 .1226 .9927