Potassium Feldspar

Potassium feldspar also known as k feldspar is a silicate mineral with the chemical formula kalsi308.

Potassium feldspar. Large volumes are also used in the manufacture of glass enamel and scouring powder. Feldspar any of a group of aluminosilicate minerals that contain calcium sodium or potassium. It has a triclinic or monoclinic crystal system and a white streak although the colour of the rock itself can be white pink grey or brown. By volume however the most significant use of potassium feldspar is as aggregate in concrete and asphalt.

In earth sciences and archaeology feldspars are used for potassium argon dating argon argon dating and luminescence dating. Its lustre is vitreous or glassy and it displays an uneven or conchoidal fracture pattern. Feldspars make up more than half of earth s crust and professional literature about them constitutes a large percentage of the literature of mineralogy. Moonstone which is a perthite of sodium and potassium aluminosilicate is characterized by an attractive silvery or bluish iridescence.

For this reason it applied in different aspects of history and folklore. Potassium feldspar refers to a number of minerals in the feldspar group and containing potassium. Orthoclase endmember formula k al si 3 o 8 an important tectosilicate mineral that forms igneous rock microcline chemically the same as orthoclase but with a different crystalline structure.