Galena, also called lead glance, is the natural mineral form of lead(2)sulphide. It is the most important ore of Lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals. It crystallizes in the cubic cyrstal system often showing octahedral forms. Galena is the main ore of lead, used since ancient times. Because of its somewhat low meltingpoint, it was easy to liberate by smelting.