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 = 15.7 GPa
Locality: synthetic
_database_code_amcsd 0004935
8.82 7.34 9.13 90 115.1 90 P2_1/n
atom     x     y     z
Mg   .8107 .0997 .0926
Si1  .8648 .4512 .2150
Si2  .9575 .7554 .0731
Ca1  .4593 .2794 .0294
Ca2  .3028 .5638 .2121
O1   .9975 .5618 .1593
O2   .8801 .5221 .3791
O3    .698 .4728  .041
O4   .0049 .8800 .2257
O5   .1263 .8208 .0662
O6   .9530 .2625 .2856
O7    .783 .7583 -.097