Andalusite
Winter J K, Ghose S
American Mineralogist 64 (1979) 573-586
Thermal expansion and high-temperature crystal chemistry of the Al2SiO5 polymorphs
T = 25 deg C
_database_code_amcsd 0000728
7.7980 7.9031 5.5566 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 .2419 0.0021 0.0029 0.0023 0.0005      0       0
Al2  .3705 .1391    .5 0.0009 0.0026 0.0028      0      0       0
Si   .2460 .2520     0 0.0007 0.0024 0.0025      0      0       0
Oa   .4246 .3629     0 0.0011 0.0031 0.0031 -.0006      0       0
Ob   .1030 .4003     0 0.0010 0.0027 0.0086 0.0002      0       0
Oc   .4233 .3629    .5 0.0018 0.0028 0.0030 -.0003      0       0
Od   .2305 .1339 .2394 0.0016 0.0032 0.0030 -.0004 -.0004   .0005