Garnet
Griffen D T, Hatch D M, Phillips W R, Kulaksiz S
American Mineralogist 77 (1992) 399-406
Crystal chemistry and symmetry of a birefringent tetragonal
pyralspite75-grandite25 garnet
_database_code_amcsd 0001447
11.6207 11.6207 11.6230 90 90 90 *I4_1/acd
.5 .25 .125
atom     x     y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Fe1  .1249     0   .25 .63 0.0076 0.0134 0.0130      0      0 0.0012
Ca1  .1249     0   .25 .25 0.0076 0.0134 0.0130      0      0 0.0012
Mg1  .1249     0   .25 .08 0.0076 0.0134 0.0130      0      0 0.0012
Mn1  .1249     0   .25 .03 0.0076 0.0134 0.0130      0      0 0.0012
Fe2      0   .25  .125 .63 0.0128 0.0128 0.0068 0.0016      0      0
Ca2      0   .25  .125 .25 0.0128 0.0128 0.0068 0.0016      0      0
Mg2      0   .25  .125 .08 0.0128 0.0128 0.0068 0.0016      0      0
Mn2      0   .25  .125 .03 0.0128 0.0128 0.0068 0.0016      0      0
AlY      0     0     0     0.0081 0.0084 0.0083 0.0001 -.0006 -.0005
Si1  .3749     0   .25     0.0106 0.0091 0.0089      0      0 -.0001
Si3      0   .25  .375     0.0086 0.0086 0.0111      0      0      0
O1   .2848 .0973 .2025     0.0126 0.0126 0.0116 0.0009 -.0020 0.0001
O2   .0977 .2024 .2851     0.0114 0.0114 0.0133 0.0010 0.0002 -.0009
O3   .2024 .2847 .0976     0.0136 0.0118 0.0113 -.0005 0.0007 0.0001