Fraipontite is a rare mineral found in the oxidized zones of lead and copper deposits. It is a complex silicate mineral composed of sodium, copper, iron, and manganese. Although there are no exact synonyms for fraipontite, it has been known by other names such as potassium ferrocyanide copper(II) sodium salt hydrate, potassioferricyanide copper(II) sodium hydrate, and sodium dimagnesioferrate. The mineral can be identified by its blue-green color, vitreous luster, and orthorhombic crystal structure. Its unique combination of elements and properties make it a valuable mineral for scientific research and mineral collectors alike.