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 = 0.00 GPa, X = .00
_database_code_amcsd 0002439
5.6978 11.4620 8.2571 90 90 90 Imma
atom     x     y     z
Mg1      0     0     0
Mg2      0   .25 .9698
Mg3    .25 .1269   .25
Si       0 .1199 .6165
O1       0   .25 .2182
O2       0   .25 .7157
O3       0 .9898 .2565
O4   .2601 .1226 .9931