AM_Pyroxene-ideal_96 Formula: Cr Na Si2 O6 Name: Pyroxene-ideal Unit cell: 9.401 8.738 5.045 90.0 108.7 90.0 , V=392.55 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 kosmochlor at 9.28 GPa after Origlieri et al. (2003), with O3-O3-O3 angle = 166.1 and model oxygen radius = 1.271