AM_Pyroxene-ideal_112 Formula: In Na Si2 O6 Name: Pyroxene-ideal Unit cell: 9.967 9.241 5.335 90.0 109.4 90.0 , V=463.48 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 indium px after Ohashi et al. (1990), with O3-O3-O3 angle = 171.0 and model oxygen radius = 1.338