AM_Heterosite Formula: (Fe.65 Mn.35) P O4 Name: Heterosite Unit cell: 5.83 9.79 4.769 90.0 90.0 90.0 , V=272.19 Space group: PMNB (62)

Eventoff W , Martin R , Peacor D R , American Mineralogist , 57 (1972) p.45-51, The crystal structure of heterosite, Locality: Fletcher Quarry, North Groton, New Hampshire, USA