MnSi2O5 Arlt T, Armbruster T, Ulmer P, Peters T American Mineralogist 83 (1998) 657-660 MnSi2O5 with the titanite structure: A new high-pressure phase in the MnO-SiO2 binary _database_code_amcsd 0002012 6.332 8.161 6.583 90 114.459 90 C2/c atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mn 0 .32050 .25 .0111 .0058 .0107 0 .0040 0 Si(M) 0 0 0 .0062 .0054 .0058 .0003 .0028 -.0001 Si(T) 0 .3234 .75 .0058 .0049 .0058 0 .0024 0 O1 0 .0649 .25 .007 .007 .004 0 .001 0 O2 -.1979 .5518 .0913 .0074 .0095 .0103 -.0013 .0035 -.0031 O3 .0919 .2076 .6018 .010 .0053 .009 -.0010 .0057 -.0009