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Feldspar is the most common rock-forming mineral (about 60% of the earth’s crust) (Kauffman and Van Dyk, 1994). The mineral name feldspar is derived from the German words feld + spar. The word "feld" is "field" in German and "spar" is a term for light colored minerals that break with a smooth surface. Feldspar minerals are usually white or very light in color, have a hardness of 6 on the Mohs’ Scale of Hardness and perfect to good cleavage (plane of breakage) in two directions.
Feldspar is a common name that applies to a group of minerals with a general chemical formula of x Al(Al,Si)3O8, where x can be sodium (Na) and/or calcium (Ca) and/or potassium (K). (Specific compositional varieties (i.e. albite, microcline…) are discussed under Mineral Descriptions).
Feldspar occurs in igneous, metamorphic and sedimentary rocks and thus can be found throughout North Carolina. It is more commonly found in igneous and metamorphic rocks of the Blue Ridge and Piedmont provinces. Feldspar weathers to kaolin which is the main clay mineral used in ceramics and fine pottery.
Mewar Microns was established in the year 1998 with the aim to achieve a leading position in the Mineral Market. Our range of activities extends from mining to micronozing, as well as customized production and processing. With our wide array of activities headed by qualified management, we have been able to construct a world wide commercial network
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 (Kauffman and Van Dyk, 1994). The mineral name feldspar is derived from the German words feld + spar. ){kind=link}