Barite (BaSO 4) is a widespread mineral in deep-sea sediments, varying between 1 and 10 wt% on a carbonate-free basis. It is the predominant barium phase in the ocean. ... Lime, phosphate, diatomite, magnesium hydroxide, perlite, barite, and sulfur dioxide are used as filtering and decolorizing agents in sugar refining. Diatomite, fullers earth ...