Mining » Metals' Info » Feldspars Description

Description

Feldspars crystallize from magma in both intrusive and extrusive igneous rocks, as veins, and are also there in many types of metamorphic rock. Rock created completely of plagioclase feldspar is known as anorthosite.

Rocks Found In Mineral

Granitic igneous rocks

Chemical Formula

Orthoclase: KAlSi3O8 Plagioclase: (Ca, Na)AlSi3O8

Domestic production and use

Useful for making ceramics and glass

Mining » Metals' Info » Feldspars Description

Description

Feldspars are a set of rock-forming tectosilicate minerals which make up as much as 60% of the Earth's crust. Feldspars crystallize from magma in both intrusive and extrusive igneous rocks, as veins, and are also present in many types of metamorphic rock. Rock formed entirely of plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rock.

Domestic production and use

Feldspar is a ordinary raw material in the production of ceramics and geopolymers.