AM_Donpeacorite_5 Formula: Mg1.433 Mn.541 Ti.002 Ca.024 Si1.997 Al.003 O6 Name: Donpeacorite Unit cell: 18.3645 8.881 5.2284 90.0 90.0 90.0 , V=852.73 Space group: PBCA (61)

Stimpfl M , American Mineralogist , 90 (2005) p.155-161, The Mn, Mg-intracrystalline exchange reaction in donpeacorite (Mn0.54Ca0.03Mg1.43Si2O6), and its relation to the fractionation behavior of Mn in Fe, Mg-orthopyroxene, Sample: quenched from 856 deg C ORD