Ca2CoSi2O7 Kusaka K, Hagiya K, Ohmasa M, Okano Y, Mukai M, Iishi K, Haga N Physics and Chemistry of Minerals 28 (2001) 150-166 Determination of structures of Ca2CoSi2O7, Ca2MgSi2O7, and Ca2(Mg.55Fe.45)Si2O7 in incommensurate and normal phases and observation of diffuse streaks at high temperature Sample: T = 673 K Melilite group _database_code_amcsd 0008515 7.8732 7.8732 5.0336 90 90 90 P-42_1m atom x y z Biso Co 0 0 0 1.42 Ca .33153 .16847 .5049 2.23 Si .1391 .3609 .9362 1.17 O1 0 .5 .824 2.8 O2 .1401 .3599 .2542 2.50 O3 .0808 .1891 .7853 2.56