CaWO

CaWO refers to the chemical compound Calcium Tungstate. Its chemical formula is CaWO4. This inorganic salt is a naturally occurring mineral, commonly known as scheelite. Scheelite is a vital ore of tungsten, a metal prized for its high melting point and density. Calcium tungstate is typically found in crystalline form, often appearing as white to yellowish or brownish crystals. It is insoluble in water but soluble in strong acids. Historically and currently, the primary importance of calcium tungstate lies in its role as a source of tungsten. The metal tungsten, extracted from scheelite and other tungsten ores, is used in a wide range of applications including incandescent light bulb filaments, high-speed cutting tools, electrodes, and aerospace components. Calcium tungstate itself has also found use as a phosphor, emitting a blue light when exposed to ultraviolet radiation or X-rays. This property made it a common component in early X-ray screens and fluorescent lighting. While other phosphors have largely replaced it in many modern applications, its historical significance in these areas is notable.