Titanite Hughes J M, Bloodaxe E S, Hanchar J M, Foord E E American Mineralogist 82 (1997) 512-516 Incorporation of rare earth elements in titanite: Stabilization of the A2/a dimorph by creation of antiphase boundaries Sample: Dy-Al _database_code_amcsd 0001900 7.0280 8.7025 6.5434 90 113.6813 90 A2/a atom x y z Biso Ti .5 0 .5 .64 Ca .25 .16922 0 1.01 Si .75 .1824 0 .58 O1 .75 .0705 .5 .91 O2 .9112 .0663 .1846 .86 O3 .3817 .2107 .3971 .79