Zircon
Robinson K, Gibbs G V, Ribbe P H
American Mineralogist 56 (1971) 782-790
The structure of zircon: A comparison with garnet
_database_code_amcsd 0000237
6.607 6.607 5.982 90 90 90 *I4_1/amd
0 -.25 .125
atom x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Zr   0   .75  .125 .00096 .00096  .0012      0      0      0
Si   0   .75  .625  .0014  .0014  .0027      0      0      0
O    0 .0661 .1953  .0037  .0031  .0029      0      0      0