AM_Pyrobelonite Formula: Pb Mn V O7 H Name: Pyrobelonite Unit cell: 7.663 6.191 9.522 90.0 90.0 90.0 , V=451.74 Space group: PNMA (62)

Donaldson D M , Barnes W H , American Mineralogist , 40 (1955) p.580-596, The structures of the minerals of the descloizite and adelite groups: II -, pyrobelonite.