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Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O) Mounanaite: PbFe+++2(VO4)2(OH)2
Comments: Stout, yellow, transparent, prismatic, striated crystals of francevillite on brownish red mounanaite matrix. Location: Mounana mine, Franceville, Haut-Ogooué, Gabon. Scale: Picture size 1.5 cm. © Paul M. Schumacher
Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O) Chervetite: Pb2V2O7
Comments: Bottle brown tabular crystals of chervetite on yellow francevilleite. Location: Mounana, Haut-Ogoue, Gabon. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O) Curienite: Pb(UO2)2V2O8·5(H2O)
Comments: Intense yellow curienite and orange francevillite. Location: Mouonana, Haut-Ogoue, Gabon. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)
Comments: Specimen of orange francevillite with minor yellow curienite. Location: Mouana Mine, Gabon. Scale: Crystal size 4 mm. © John Veevaert