Andalusite
Winter J K, Ghose S
American Mineralogist 64 (1979) 573-586
Thermal expansion and high-temperature crystal chemistry of the Al2SiO5 polymorphs
T = 1000 deg C
_database_code_amcsd 0000732
7.8976 7.9735 5.5695 90 90 90 Pnnm
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Al1      0     0 .2418 0.0107 0.0077 0.0070 0.0036      0      0
Al2  .3724 .1404    .5 0.0042 0.0059 0.0090 0.0001      0      0
Si   .2461 .2551     0 0.0042 0.0049 0.0080  .0000      0      0
Oa   .4224 .3661     0 0.0055 0.0074 0.0093 -.0019      0      0
Ob   .1033 .4006     0 0.0041 0.0053 0.0306 0.0006      0      0
Oc   .4259 .3629    .5 0.0073 0.0058 0.0098 -.0014      0      0
Od   .2345 .1379 .2387 0.0072 0.0081 0.0102 -.0018 -.0023  .0020