👉 Sodalites are a group of minerals that contain a variety of different types of silicon dioxide crystals, which together form a solid. They are known for their unique appearance and have been used in various applications such as ceramics, glass, and other materials. In terms of their chemical composition, sodalites consist mainly of SiO2 (silicon dioxide), with some trace amounts of Al2O3 and Fe2O3. The minerals can be classified based on the type of silicon oxide present