Tags: Chemical Substance, Mineral.
Willemite is a zinc silicate mineral (Zn2SiO4) and a minor ore of zinc. It is highly fluorescent (green) under shortwave ultraviolet light.It occurs in all different colors in daylight in fibrous masses solid brown masses (troostite) and apple green gemmy masses.It was discovered in 1830 and named after William I of the Netherlands.
