Multiple choice The chemical formula for wulfenite mineral is FeCO3 (Fe,Mn)WO4 PbMoO4 SnO2 FeCr2O4 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Wulfenite is a lead molybdate mineral with the formula PbMoO4. It is most often found as thin tabular crystals with a bright orange-red to yellow-orange colour, sometimes brown, although the colour can be highly variable.