AM_Pyroxene-ideal_111 Formula: Ga Na Si2 O6 Name: Pyroxene-ideal Unit cell: 9.64 8.928 5.155 90.0 109.7 90.0 , V=417.70 Space group: C12/C1 (15)

Thompson R M , Downs R T , American Mineralogist , 89 (2004) p.614-628, Model pyroxenes II: Structural variation as a function of tetrahedral rotation, model sodium gallium px after Ohashi et al. (1995), with O3-O3-O3 angle = 172.7 and model oxygen radius = 1.291