feldspathic glaze

A feldspathic glaze is a type of ceramic glaze that uses feldspar as a primary ingredient. Feldspar is a common silicate mineral found in Earth's crust, primarily composed of aluminosilicates of potassium, sodium, or calcium.12

In pottery, glazes serve both practical and decorative purposes. They are applied to ceramic bodies and then fired, fusing into a glassy coating that seals pores and creates a smooth surface. Feldspathic glazes are transparent and are used on hard porcelain, soft porcelain, and stoneware. They are also a key component in the creation of porcelain itself, where feldspar is added to clay and fired at high temperatures, resulting in a translucent material. Feldspars are also widely utilized in the glass and ceramics industries.3456