Cordierite
Schwartz K B, Leong D B, McConville R L
Physics and Chemistry of Minerals 20 (1994) 563-574
Structural chemistry of synthetic cordierite: evidence for solid solutions
and disordered compositional domains in Bi-flux-grown Mg-cordierites
Sample: Synthesized in 5 at% bismuth oxide flux at 1000 C for 12 hours
Note: tetrahedral site occupancies are assumed, not refined
_database_code_amcsd 0007856
17.0299 9.7424 9.3481 90 90 90 Cccm
atom       x      y     z  occ Biso
MgM    .3369      0   .25       .91
AlT11    .25    .25 .2525       .73
SiT16      0     .5   .25       .84
SiT21  .1914  .0803     0       .86
SiT23  .1343 -.2380     0       .82
AlT26  .0499  .3106     0       .54
O11    .2470 -.1037 .3584      1.04
O16    .0637 -.4163 .3492       .77
O13   -.1735 -.3108 .3578       .88
O26    .0420 -.2508     0      1.46
O21    .1199  .1883     0      1.45
O23    .1633 -.0812     0      1.31
BiC1       0      0   .25 .084   13
BiC2       0      0     0 .032    8