Titanite Troitzsch U, Ellis D J, Thompson J, Fitz-Gerald J European Journal of Mineralogy 11 (1999) 955-965 Crystal structural changes in titanite along the join TiO-AlF Sample: AlF37 _database_code_amcsd 0006802 7.0368 8.6360 6.5135 90 114.232 90 A2/a atom x y z occ Biso Ca .25 .1651 0 1.28 Aloct .5 0 .5 .372 1.59 Tioct .5 0 .5 .628 1.59 Si .75 .1837 0 .83 O1 .75 .0698 .5 .628 .38 F1 .75 .0698 .5 .372 .38 O2 .9030 .0654 .1850 .38 O3 .3796 .2083 .3948 .38