Liebenbergite
Ottonello G, Della Giusta A, Molin G M
American Mineralogist 74 (1989) 411-421
Cation ordering in Ni-Mg olivines
sample Ni.51, heated to 1150 C, then quenched
MgNiSiO4
_database_code_amcsd 0001222
4.7431 10.1765 5.9401 90 90 90 Pbnm
atom     x     y     z occ Biso
Mg1      0     0     0 .29 0.51
Ni1      0     0     0 .71 0.51
Ni2  .9913 .2751   .25 .32 0.52
Mg2  .9913 .2751   .25 .68 0.52
Si   .4265 .0936   .25     0.47
O1   .7685 .0929   .25     0.51
O2   .2200 .4462   .25     0.56
O3   .2745 .1626 .0326     0.63