Benitoite Hejny C, Miletich R, Jasser A, Schouwink P, Crichton W, Kahlenberg V American Mineralogist 97 (2012) 1749-1763 Second-order P6c2-P31c transition and structural crystallography of the cyclosilicate benitoite, BaTiSi3O9, at high pressure Note: P = 4.01 GPa Locality: San Benito, California, USA _database_code_amcsd 0019510 6.5605 6.5605 9.6574 90 90 120 P-6c2 atom x y z Uiso Ba 2/3 1/3 0 .0079 Ti 1/3 2/3 0 .002 Si .0688 .7806 .25 .0004 O1 .812 .745 .25 .001 O2 .087 .653 .3877 .002