Feldspar n. : Alt. of Feldspath

Example:
What is the difference between potassium Feldspar sodium Feldspar and calcium Feldspar?

Taxonomy
Feldspar, plagioclase feldspars, alkali feldspar, Compositions, Mineral, potassium feldspar, solid solution, albite, Rock, Barium, textures, anorthite, free encyclopedia, endmember, Amethyst Galleries, exsolution, Perthite, crystals.

Defination from the web:
Feldspar). Collected by Apollo 16 from the Lunar Highlands near Descartes Crater. ... Feldspar is a common raw material in the production of ceramics and geopolymers. ...