Blythite Arlt T, Armbruster T, Miletich R, Ulmer P, Peters T Physics and Chemistry of Minerals 26 (1998) 100-106 High pressure single-crystal synthesis, structure and compressibility of the garnet Mn2+3Mn3+2[SiO4]3 Sample: T = 298 K _database_code_amcsd 0008167 11.801 11.801 11.801 90 90 90 Ia-3d atom x y z Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mn 0 .25 1/8 .89 .0133 .0133 .007 .003 0 0 Mn 0 0 0 .58 .0074 .0074 .0074 -.0003 -.0003 -.0003 Si 3/8 0 .25 .79 .008 .011 .011 0 0 0 O .0362 .0516 .6569 1.13 .010 .013 .020 .000 -.007 .002