AM_Ferrosilite_10 Formula: Si2 Fe1.7 Ca.3 O6 Name: Ferrosilite Unit cell: 9.779 9.088 5.258 90.0 107.39 90.0 , V=445.93 Space group: P121/C1 (14)

Ohashi Y , Burnham C W , Finger L W , American Mineralogist , 60 (1975) p.423-434, The effect of Ca-Fe substitution on the clinopyroxene crystal structure, Fs85Wo15