Barite (baryte), with the chemical formula Ba [SO 4] or BaO·SO 3, is a barium sulfate with an island structure. Barite is named for its high density. In the chemical classification of mineral crystals, it belongs to the oxysalt category, the sulfate class, and the barite group. In the structural-functional classification of mineral raw materials in mineral material science, barite belongs to the three-dimensional structural mineral category and the functional mineral subcategory.