Ca2Ce8(SiO4)6O2 Skakle J M S, Dickson C L, Glasser F P Powder Diffraction 15 (2000) 234-238 The crystal structures of CeSiO4 and Ca2Ce8(SiO4)6O2 Locality: synthetic _database_code_amcsd 0015319 9.4343 9.4343 6.8885 90 90 120 P6_3/m atom x y z occ Uiso Ca1 1/3 2/3 -.0038 .498 .052 Ce1 1/3 2/3 -.0038 .502 .052 Ce2 .2338 -.0108 .25 .995 .0302 Ca2 .2338 -.0108 .25 .005 .0302 Si1 .403 .380 .25 .082 O1 .316 .467 .25 .046 O2 .597 .467 .25 .070 O3 .340 .252 .071 .083 O4 0 0 .25 .087