... yellow, blue, red, or colorless mineral. It is a sulfate of barium, BaSO 4, found in nature as tabular crystals or in ... chemical reagents. Barite is used as a commercial source of barium and many of its compounds. Ground barite is used as a filler ... fixe, a chemically precipitated barium sulfate, or lithopone, a mixture of barium sulfate, zinc sulfide, and zinc oxide. 1. Drilling Grade BaSO4: 92% Min ...