Forsterite Henderson C M B, Redfern S A T, Smith R I, Knight K S, Charnock J M American Mineralogist 86 (2001) 1170-1187 Composition and temperature dependence of cation ordering in Ni-Mg olivine solid solutions: A time-of-flight neutron powder diffraction and EXAFS study Sample: Mg70Ni30 at room temperature _database_code_amcsd 0002677 4.7460 10.194 5.9568 90 90 90 Pbnm atom x y z occ Biso Ni1 0 0 0 .495 0.39 Mg1 0 0 0 .505 0.39 Ni2 .9908 .2763 .25 .105 0.44 Mg2 .9908 .2763 .25 .895 0.44 Si .4255 .0936 .25 0.25 O1 .7675 .0928 .25 0.41 O2 .2206 .4463 .25 0.44 O3 .2760 .1627 .0324 0.43