AM_Donpeacorite Formula: Mg1.47 Mn.53 Si2 O6 Name: Donpeacorite Unit cell: 18.384 8.878 5.226 90.0 90.0 90.0 , V=852.95 Space group: PBCA (61)

Petersen E U , Anovitz L M , Essene E J , American Mineralogist , 69 (1984) p.472-480, Donpeacorite, (Mn,Mg)MgSi2O6, a new orthopyroxene and its proposed phase, relations in the system MnSiO3-MgSiO3-FeSiO3