AM_Fairfieldite_1 Formula: Ca2 Mn P2 O10 H4 Name: Fairfieldite Unit cell: 5.79 6.57 5.51 102.27 108.67 90.3 , V=193.43 Space group: P-1 (2)

Fanfani L , Nunzi A , Zanazzi P F , Acta Crystallographica, Section B , 26 (1970) p.640-645, The crystal structure of fairfieldite, Locality: Foote Mine, North Carolina, USA