Wadsleyite Horiuchi H, Sawamoto H American Mineralogist 66 (1981) 568-575 Beta-Mg2SiO4: Single-crystal X-ray diffraction study case 2 _database_code_amcsd 0000835 5.6983 11.4380 8.2566 90 90 90 Imma atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Si 0 .1198 .6168 .0017 .00045 .0009 0 0 0 Mg1 0 0 0 .0012 .0007 .0011 0 0 0 Mg2 0 .25 .9701 .0034 .0008 .0012 0 0 0 Mg3 .25 .1276 .25 .0028 .0008 .0016 0 -.0003 0 O1 0 .25 .2166 .0029 .0007 .0014 0 0 0 O2 0 .25 .7164 .0034 .0002 .0014 0 0 0 O3 0 .9900 .2559 .0034 .0005 .0011 0 0 -.0001 O4 .2616 .1225 .9925 .0028 .0006 .0013 -.0001 .0002 0