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: AlF49 _database_code_amcsd 0006803 7.0229 8.6130 6.5023 90 114.344 90 A2/a atom x y z occ Biso Ca .25 .1639 0 1.64 Aloct .5 0 .5 .489 1.52 Tioct .5 0 .5 .511 1.52 Si .75 .1848 0 1.19 O1 .75 .0674 .5 .511 .50 F1 .75 .0674 .5 .489 .50 O2 .9052 .0673 .1885 .50 O3 .3838 .2057 .4017 .50