Gypsum
Pollution Control Engineering and Gypsum Gypsum is a widely occurring mineral, also known as plaster of Paris or calcium sulfate dihydrate (CaSO4 • 2H2O). Some common uses of gypsum are the following: • Drywall • Ingredient of plaster • Component of Portland cement • Soil conditioner • Molds and splints • Model making To produce plaster or wallboard, the raw .