AM_Enstatite_13 Formula: (Mg.751 Fe.249) Si O3 Name: Enstatite Unit cell: 18.4105 8.9691 5.254 90.0 90.0 90.0 , V=867.57 Space group: PBCA (61)

Yang H , Ghose S , American Mineralogist , 80 (1995) p.9-20, A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich, orthopyroxene, (Mg0.75Fe0.25)2Si2O6, T = 1100 K