AM_Donpeacorite_6 Formula: Mg1.433 Mn.541 Ti.002 Ca.024 Si1.997 Al.003 O6 Name: Donpeacorite Unit cell: 18.3559 8.8741 5.2256 90.0 90.0 90.0 , V=851.21 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 806 deg C ORD