Pyromorphite is a mineral composed of lead chlorophosphate, with the chemical formula Pb₅(PO₄)₃Cl. This mineral is distinguished by its vivid colors, which vary from green to yellow, sometimes with shades of brown, orange or white. Pyromorphite forms mainly in the oxidized zones of lead deposits, often associated with other minerals such as galena or cerussite.
It crystallizes in the hexagonal system, often with short prismatic crystals. Its hardness ranges from 3.5 to 4 on the Mohs scale, making it a relatively brittle mineral, but prized by collectors for its beautiful colors.