Tuite Sugiyama K, Tokonami M Physics and Chemistry of Minerals 15 (1987) 125-130 Structure and crystal chemistry of a dense polymorph of tricalcium phosphate Ca3(PO4)2: a host to accommodate large lithophile elements in the Earth's mantle _database_code_amcsd 0007447 5.2487 5.2487 18.6735 90 90 120 R-3m atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 0 0 0 1.24 .0168 .0168 .00066 .0084 0 0 Ca2 0 0 .2036 1.04 .0130 .0130 .00070 .0065 0 0 P 0 0 .4052 .71 .0075 .0075 .00063 .00375 0 0 O1 0 0 .3235 1.38 .0198 .0198 .00062 .0099 0 0 O2 -.1591 .1591 .4327 1.07 .0144 .0144 .00097 .0119 .0000 .0000