Akermanite
Merlini M, Gemmi M, Hanfland M, Crichton W
American Mineralogist 94 (2009) 704-709
High-pressure behavior of akermanite and gehlenite and phase stability
of the normal structures in melelites
Note: P = 5 GPa
Locality: synthetic
_database_code_amcsd 0004933
7.740 7.740 4.932 90 90 90 P-42_1m
atom     x     y     z
Mg       0     0     0
Ca   .3343 .1657 .5065
Si   .1416 .3584  .937
O1       0    .5 -.195
O2   .1438 .3562  .260
O3   .0803 .1843  .782