AM_Ferrosilite_9
Formula: Fe1.6 Ca.4 Si2 O6
Name: Ferrosilite
Unit cell: 9.76 9.057 5.234 90.0 106.3 90.0 , V=444.07
Space group: C12/C1 (15)

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, Fs80Wo20