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 = 773 K
Melilite group
_database_code_amcsd 0008516
7.8815 7.8815 5.0387 90 90 90 P-42_1m
atom      x     y     z Biso
Co        0     0     0 1.65
Ca   .33150 .1685 .5047 2.51
Si    .1390  .361 .9364 1.33
O1        0    .5  .824  3.0
O2    .1404 .3596 .2545 2.85
O3    .0809 .1892 .7855 2.82