At its type locality it is associated with curienite (a closely-related uranyl vanadate), chevetite (a lead vanadate), mounanaite (another lead vanadate), duttonite, vanuralite, mottramite, carnotite, dewindtite, torbernite, uranopilite, johannite and kasolite.
At its type locality it is associated with curienite (a closely-related uranyl vanadate), chevetite (a lead vanadate), and mounanaite (another lead vanadate). At other localities, francevillite is associated with duttonite, vanuralite, mottramite, carnotite, dewindtite, torbernite, uranopilite, johannite and kasolite.