AM_Clinohypersthene
Formula: Fe1.337 Mg.631 Ca.032 Si2 O6
Name: Clinohypersthene
Unit cell: 9.691 8.993 5.231 90.0 108.61 90.0 , V=432.05
Space group: P121/C1 (14)

Smyth J R , American Mineralogist , 59 (1974) p.1069-1082, The high temperature crystal chemistry of clinohypersthene, T = 20 C