AM_Melanotekite Formula: Pb2 Fe2 Si2 O9 Name: Melanotekite Unit cell: 6.9788 11.0164 10.0881 90.0 90.0 90.0 , V=775.59 Space group: PBCN (60)

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