Ca2(Mg.55Fe.45)Si2O7
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 = 423 K
Melilite group
_database_code_amcsd 0008526
7.8776 7.8776 5.0153 90 90 90 P-42_1m
atom     x     y     z occ Biso
Mg       0     0     0 .55 1.19
Fe       0     0     0 .45 1.19
Ca   .3309 .1691 .5063     1.97
Si   .1384 .3616 .9376      .97
O1       0    .5  .824      3.3
O2   .1392 .3608 .2565      2.4
O3   .0807 .1896 .7895      2.9