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 = 297 K
Melilite group
_database_code_amcsd 0008508
7.8444 7.8444 5.0265 90 90 90 P-42_1m
atom     x     y     z Biso
Co       0     0     0  .81
Ca   .3310 .1690 .5060 1.80
Si   .1391 .3609 .9383  .74
O1       0    .5  .823  3.3
O2   .1399 .3601 .2554  1.8
O3   .0795 .1896 .7864  2.6