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Is feldspar a mineral?

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Feldspar is the name given to a group of minerals distinguished by the presence of alumina and silica (SiO 2) in their chemistry. This group includes aluminum silicates of soda, potassium, or lime. It is the single most abundant mineral group on Earth. read more

Feldspar mineral classification: This ternary diagram shows how feldspar minerals are classified on the basis of their chemical composition. The sequence of minerals along the left side of the triangle represents the solid solution series of the alkali feldspars. read more

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. read more

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