Aluminum silicate minerals containing calcium, sodium, and potassium

Feldspar is an aluminosilicate mineral of alkali metals or alkaline earth metals such as potassium, sodium, calcium, and barium, with a frame like crystal structure. Its main components are SiO2, Al2O3, K2O, Na2O, CaO, etc.

Feldspar is the most important rock forming mineral in surface rocks. Feldspar is a general term for feldspar minerals, which are a common type of rock forming mineral containing calcium, sodium, and potassium aluminosilicates.

Feldspar is an aluminosilicate mineral containing calcium, sodium, and potassium. It has many types, such as albite, plagioclase, barite, barite, plagioclase, orthoclase, plagioclase, etc. They all have a glassy luster and come in a variety of colors. There are colorless, white, yellow, pink, green, gray, black, etc. Some are transparent, some are semi transparent. Feldspar itself should be colorless and transparent. The reason why it is colored or not completely transparent is because it contains other impurities. Some form blocks, some form plates, some form columns or needles, etc.

Feldspar accounts for up to 60% of the Earth's crust and can occur in igneous, metamorphic, and sedimentary rocks. Feldspar is the main mineral component of almost all igneous rocks and is of great significance for rock classification. There is also a drug with the same name.