Majorite Nakatsuka A, Yoshiasa A, Yamanaka T, Ohtaka O, Katsura T, Ito E American Mineralogist 84 (1999) 1135-1143 Symmetry change of majorite solid-solution in the system Mg3Al2Si3O12-MgSiO3 Sample: x = .64 _database_code_amcsd 0002263 11.4891 11.4891 11.4891 90 90 90 *I4_1/acd .5 .25 .125 atom x y z occ Biso MgX1 0 .25 .125 1.48 MgX2 .12494 0 .25 1.46 MgY 0 0 0 .320 .33 AlY 0 0 0 .360 .33 SiY 0 0 0 .320 .33 SiZ1 0 .25 .375 .57 SiZ2 .37500 0 .25 .59 O1 -.03240 .05055 .15462 1.04 O2 .15446 -.03260 .05013 1.03 O3 .05023 .15470 -.03237 .99