elementMassicotElements · Colors & materialsA soft yellow lead monoxide pigment. Not litharge as the fused form alone, and not yellow ochre as an earth.Massicot is used in Medicine.Pliny’s Natural History treats massicot and related lead-oxide yellows among mineral preparations neighboring litharge and minium drugs. A Roman-era pharmacological use of the yellow lead oxide, not minium red lead alone and not metallic lead.from Pliny the Elder · Natural History, c. 77 CEused in · sourced · documentedsourcesNatural History · Pliny the ElderPliny, Naturalis Historia.