Bytownite is a type of feldspar mineral that is primarily composed of calcium and aluminum. As with any mineral, there are a variety of synonyms that are used to describe it. One of the most common is Anorthite, which is another type of feldspar that is composed of calcium and aluminum as well. Other synonyms for Bytownite include Albite, which is a type of feldspar that is rich in sodium, as well as Labradorite and Oligoclase, two other types of feldspar minerals. Regardless of the name, Bytownite is an important mineral that is used in a variety of applications, including in the production of ceramics, glass, and enamel.