Mullite
Angel R J, McMullan R K, Prewitt C T
American Mineralogist 76 (1991) 332-342
Substructure and superstructure of mullite by neutron diffraction
Model 2 X-ray
_database_code_amcsd 0001352
7.5785 7.6817 2.8864 90 90 90 Pbam
atom     x     y    z occ Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3) B(2,3)
Al      0     0     0          0.0024 0.0017 0.0102 0.0002      0      0
SiT1  .148 .3455   .5 .3  0.43
AlT2 .1502 .3362   .5 .5  0.43
AlT* .2622 .2057   .5 .2       0.0008 0.0019 0.012 -0.0002      0      0
Oab1 .3591 .4110   .5 .3  0.41
Oab2 .3509 .4356   .5 .5  0.41
Oab* .3791 .4039   .5 .2  0.41
Oc      .5     0   .5 .4       0.0049 0.0043 0.063 -0.0006      0      0
Oc*  .4501 .0502   .5 .2       0.0021 0.0016 0.029 -0.0003      0      0
Od   .1188 .2259 .024 .3  0.51
Od*  .1409 .2067 .020 .2  0.51