AM_Whitlockite_5 Formula: Mn Ca9 P7 O28 H Name: Whitlockite Unit cell: 10.438 10.438 37.15 90.0 90.0 120.0 , V=3505.29 Space group: R3C (161)

Kostiner E , Rea J R , Acta Crystallographica, Section B , 32 (1976) p.250-253, The crystal structure of manganese-whitlockite, Ca18Mn2H2(PO4)14, Locality: synthetic