Feldspar
Feldspar (English: feldspar) is a general term for the feldspar mineral, which is the most important rock component in the crust, with a proportion of 60%. Feldspar main chemical components include potassium, sodium, calcium, barium and other elements of the aluminosilicate minerals (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8). Feldspar is a crystal of magma that invades igneous rocks or ignites igneous rocks and forms veins; it can also be present in a variety of metamorphic rocks. The rock formed almost entirely by calcareous plagioclase is called plagioclase. Feldspar is also found in a variety of sedimentary rocks. In addition the moon shell is also composed of feldspar. ...