Scheelite is a mineral composed of calcium tungstate, often found in metamorphic and igneous rocks. It typically appears as a white, yellow, or blue-green crystal and is known for its high density and strong fluorescence under ultraviolet light. This mineral is an important source of tungsten, a metal used in various applications, including the production of hard metals and electrical contacts. Scheelite is commonly mined in regions with significant tungsten deposits, contributing to the global supply of this valuable resource.