K-feldspar is a mineral composed of potassium-rich feldspar group minerals. Other synonyms for k-feldspar include orthoclase, potassium feldspar, and KAlSi3O8. Orthoclase is one of the most common K-feldspar minerals, known for its distinctive cleavage and pink to peach color. Potassium feldspar is often found in igneous rocks and is used in the manufacture of ceramics and glass. KAlSi3O8 is the chemical formula for K-feldspar, which highlights its primary chemical components. Regardless of its name or synonym, K-feldspar remains a valuable mineral with a wide range of applications in various industries.