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 = 3.129 GPa _database_code_amcsd 0004117 7.7186 7.8467 5.5329 90 90 90 Pnnm atom x y z Biso Al1 0 0 .24182 .299 Al2 .3699 .13831 .5 .321 Si .2466 .25083 0 .294 OA .4203 .3631 .5 .33 OB .4272 .3601 0 .32 OC .1020 .3998 0 .71 OD .2296 .13146 .2394 .44