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 = .38
_database_code_amcsd 0002261
11.4833 11.4833 11.4833 90 90 90 *I4_1/acd
.5 .25 .125
atom       x       y       z  occ Biso
MgX1       0     .25    .125      1.21
MgX2  .12495       0     .25      1.21
MgY        0       0       0 .187  .26
AlY        0       0       0 .626  .26
SiY        0       0       0 .187  .26
SiZ1       0     .25    .375       .50
SiZ2  .37505       0     .25       .51
O1   -.03273  .05009  .15398       .81
O2    .15438 -.03268  .05053       .83
O3    .05005  .15430 -.03292       .82