Gypsum Market: Trends, Demand Drivers, and the Road to USD 12 Billion What Is Gypsum? The Natural Foundation of the Calcium Sulfate Market Gypsum is the naturally occurring dihydrate form of calcium sulfate (CaSO4·2H2O) and is one of the most widely mined and commercially significant minerals in the world. Found in sedimentary rock formations across every inhabited continent, gypsum...