57Fe MÖSSBAUER STUDY OF THE CRYSTAL CHEMISTRY OF STRUNZITE, MnFe2(PO4)2, (OH)2 . 6H2O R. Vogel et B.J. Evans J. Phys. Colloques, 41 C1 (1980) C1-297-C1-298 DOI: 10.1051/jphyscol:19801106