AM_Epidote-(Pb) Formula: Ca1.13 Pb.5 Sr.25 Mn.12 Si3 Al2.02 Fe.98 O13 H Name: Epidote-(Pb) Unit cell: 8.958 5.665 10.304 90.0 114.4 90.0 , V=476.19 Space group: P121/M1 (11)

Dollase W A , American Mineralogist , 56 (1971) p.447-464, Refinement of the crystal structures of epidote, allanite and hancockite