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 = 5.441 GPa _database_code_amcsd 0004119 7.6704 7.81452 5.51589 90 90 90 Pnnm atom x y z Biso Al1 0 0 .2417 .30 Al2 .3695 .13774 .5 .30 Si .2475 .24974 0 .30 OA .4203 .3633 .5 .3304 OB .4287 .3584 0 .33 OC .10377 .3999 0 .75 OD .2292 .1303 .2399 .39