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Feldspar Most of the products we use every day are made with Feldspar the most abundant group of minerals in the earth s crust Feldspars have both alkali and alumina content which makes them particularly valuable in industrial processes Feldspars play an important role as fluxing agents in ceramics and glass

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Feldspar 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 aluminum silicates of soda potassium or lime It is the single most abundant mineral group on Earth They account for an estimated 60 of exposed rocks as well as

Feldspar minerals occur in igneous metamorphic and sedimentary rocks throughout the world They are used to make glass ceramics paint plastics rubber and many other products Moonstone labradorite sunstone and amazonite are examples of feldspar gem materials

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Feldspar is by far the most abundant group of minerals in the earth s crust forming about 60 of terrestrial rocks Most deposits offer sodium feldspar as well as potassium feldspar and mixed feldspars Feldspars are primarily used in industrial applications for their alumina and alkali content The term feldspar encompasses

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The feldspar group is a fairly large group with nearly 20 members recognized but only nine are well known and common Those few however make up the greatest percentage of minerals found in the Earth s crust The following are some of the more common feldspar minerals

Feldspar any of a group of aluminosilicate minerals that contain calcium sodium or potassium Feldspars make up more than half of Earth s crust and professional literature about them constitutes a large percentage of the literature of mineralogy Of the more than 3 000 known mineral species less than 0 1 percent make

Feldspars are a group of rock forming tectosilicate minerals that make up about 41 of the Earth s continental crust by weight Feldspars crystallize from magma as veins in both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock Rock formed almost entirely of calcic plagioclase

feldspar 60 KAlSi3O8 NaAlSi3O8 CaAl2Si2O8

The feldspars are a family of silicate minerals which occur in igneous rocks There are many different members to the feldspar group Obviously silicon and oxygen form the foundation for the group but calcium sodium and potassium are also present One of these elements is usually dominant but most of the feldspars

A group of silicate minerals May contain very minor amount of OH groups considered as defects e g Yang et al 2015 In petrology the group is split into two major groups Alkali feldspar feldspar minerals rich in sodium or potassium Plagioclase the albite to anorthite series