Olivine Miyake M, Nakamura H, Kojima H, Marumo F American Mineralogist 72 (1987) 594-598 Cation ordering in Co-Mg olivine solid-solution series Sample: Co20 _database_code_amcsd 0001091 4.781 10.296 5.998 90 90 90 Pbnm atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Co1 0 0 0 .0048 .0068 .0050 .0000 -.0006 -.0010 Co2 .9912 .2765 .25 .0058 .0051 .0055 .0001 0 0 Si .4283 .0949 .25 .0035 .0049 .0044 .0001 0 0 O1 .7675 .0918 .25 .0046 .0064 .0062 .0000 0 0 O2 .2158 .4486 .25 .0062 .0052 .0069 .0004 0 0 O3 .2818 .1641 .0339 .0063 .0079 .0057 .0009 -.0007 .0017