AM_Akermanite
Formula: Mg Ca2 Si2 O7
Name: Akermanite
Unit cell: 7.74 7.74 4.932 90.0 90.0 90.0 , V=295.46
Space group: P-421M (113)

Merlini M , Gemmi M , Hanfland M , Crichton W , American Mineralogist , 94 (2009) p.704-709, High-pressure behavior of akermanite and gehlenite and phase stability, of the normal structures in melelites, Note: P = 5 GPa, Locality: synthetic