AM_Orthopyroxene_9 Formula: Mg1.436 Cu.564 Si2 O6 Name: Orthopyroxene Unit cell: 18.221 8.89 5.226 90.0 90.0 90.0 , V=846.53 Space group: PBCA (61)

Tachi T , Horiuchi H , Nagasawa H , Physics and Chemistry of Minerals , 24 (1997) p.463-476, Structure of Cu-bearing orthopyroxene, Mg(Cu.56,Mg.44)Si2O6,, and behavior of Cu2+ in the orthopyroxene structure