Andalusite Burt J B, Ross N L, Angel R J, Koch M American Mineralogist 91 (2006) 319-326 Equations of state and structures of andalusite to 9.8 GPa and sillimanite to 8.5 GPa Locality: Minas Gerais, Brazil Sample: P = 2.512 GPa _database_code_amcsd 0004116 7.7320 7.85659 5.53642 90 90 90 Pnnm atom x y z Biso Al1 0 0 .2415 .31 Al2 .3700 .13868 .5 .31 Si .2466 .25092 0 .301 OA .4208 .3637 .5 .37 OB .4270 .3608 0 .34 OC .1044 .4001 0 .67 OD .2296 .1320 .2400 .47