Scheelin is a mineral that belongs to the group of tungstates, which are compounds containing the element tungsten in combination with other elements. It is specifically categorized as a calcium tungstate, as it consists of calcium (Ca) and tungsten (W) atoms. The mineral has a chemical formula of CaWO₄.
Scheelin typically occurs in a variety of colors, including yellow, orange, brown, and sometimes green. It has a characteristic tetragonal crystal structure, with square pyramid-shaped crystals that are often tabular or prismatic in shape. The mineral has a relatively high density, with a specific gravity range of 5.9 to 6.1.
As a tungstate mineral, scheelin is an important source of tungsten, which has various industrial applications due to its high melting point, hardness, and ability to resist corrosion. Tungsten is commonly used in the production of electrical wires, heating elements, and various types of machinery.
In addition to its industrial importance, scheelin also holds significance in the field of mineralogy. It is highly valued by collectors and researchers for its aesthetic appeal and distinct crystal habits. It can be found in tungsten-bearing deposits worldwide, with notable occurrences in countries such as China, Russia, Bolivia, and the United States.
Overall, scheelin is a calcium tungstate mineral that possesses both industrial and mineralogical significance for its tungsten content and distinctive crystal structure, respectively.
