AM_Pyroxene-ideal_114 Formula: Co Ca Si2 O6 Name: Pyroxene-ideal Unit cell: 9.785 9.1 5.254 90.0 108.5 90.0 , V=443.66 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 calcium cobalt px after Ghose et al. (1987), with O3-O3-O3 angle = 165.1 and model oxygen radius = 1.325