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feldspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium felspar atomic number 14 , Si , silicon - a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used ...

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Feldspar. Milled feldspar is a naturally occurring mineral with properties that make it an exceptional functional filler and extender in a wide variety of ceramic and industrial applications.

Feldspar is the name given to a group of minerals distinguished by the presence of alumina and silica (SiO2) in their chemistry. This group includes

Feldspar definition is - any of a group of crystalline minerals that consist of aluminum silicates with either potassium, sodium, calcium, or barium and that are …

Feldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and extender in paint, plastics, and rubber. In glassmaking, alumina from feldspar improves product hardness, durability, and resistance to chemical corrosion.

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The feldspar group can be divided into two isomorphic series: the alkali-feldspars and the plagioclase feldspars. Feldspars share a similar crystalline structure while their chemical compositions vary slightly among the different varieties.

Quartz monzonite is a granitic rock that is primarily composed of quartz, plagioclase feldspar, and orthoclase feldspar. Other minerals, such as biotite and hornblende, are …