AM_Kentrolite_1 Formula: Pb2 Mn2 Si2 O9 Name: Kentrolite Unit cell: 7.0079 11.0665 9.9634 90.0 90.0 90.0 , V=772.69 Space group: P21221 (18)

Dorsam G , Liebscher A , Wunder B , Franz G , American Mineralogist , 93 (2008) p.573-583, Crystal structures of synthetic melanotekite (Pb2Fe2Si2O9), kentrolite, (Pb2Mn2Si2O9), and the aluminum analogue (Pb2Al2Si2O9), Locality: synthetic