Pyromorphite is a secondary lead mineral found in the oxidised zones of lead deposits. Typically found as green, yellowish, brownish, greyish or white barrel-shaped hexagonal prisms, in clusters or as druses on matrix. This mineral was named Pyromorphite by J. F. L. Hausmann in 1813. The name is derived from the Greek for pyr (fire) and morfe (form) due to its crystallization behavior after being melted. Notable localities include Bad Ems District in Germany, Les Farges Mine in France, Caldbeck Fells in England, Rum Jungle in Australia, or the brilliant apple-green specimens from the Daoping and Yangshuo mines in China.