Andalusite Ralph R L, Finger L W, Hazen R M, Ghose S American Mineralogist 69 (1984) 513-519 Compressibility and crystal structure of andalusite at high pressure 25 kbar step-scan _database_code_amcsd 0000940 7.7382 7.8571 5.5338 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 0.0036 0.0026 0.0007 0.0009 0 0 Al2 .3702 .1386 .5 0.0022 0.0020 0.0052 -.0003 0 0 Si .2460 .2505 0 0.0019 0.0019 0.0047 0 0 0 OA .4220 .3632 .5 0.0025 0.0027 0.0066 0.0004 0 0 OB .4260 .3608 0 0.0025 0.0035 0.0017 -.0009 0 0 OC .1031 .3999 0 0.0036 0.0025 0.0068 -.0012 0 0 OD .2303 .1324 .2387 0.0030 0.0030 0.0017 -.0004 -.0003 .0000