AM_Diopside_5 Formula: Ca Mg Si2 O6 Name: Diopside Unit cell: 9.804 9.03 5.275 90.0 105.98 90.0 , V=448.95 Space group: C12/C1 (15)

Finger L W , Ohashi Y , American Mineralogist , 61 (1976) p.303-310, The thermal expansion of diopside to 800 C and a refinement of the crystal, structure at 700 C, T = 700 C