The Natrolite Group consists of a group of minerals primarily composed of sodium, aluminum, and silica. These minerals are characterized by their needle-like crystal structures and are typically found in volcanic rocks and zeolites. Natrolite itself is the most well-known member of this group, often appearing as white or colorless crystals. Members of the Natrolite Group are important in geology and mineralogy due to their role in the formation of zeolites and their ability to absorb water and other substances. They can also be used in various industrial applications, including water purification and as catalysts in chemical reactions.