Gypsum Is a delicate sulfate mineral made up of calcium sulfate dihydrate, Together with the chemical method CaSO4·2H2O.[four] It is commonly mined and is used to be a fertilizer and as the major constituent in many types of plaster, drywall and blackboard or sidewalk chalk. Cement Production: Selected forms of https://www.propanraya.com/id/produk/eco-gypsum-ee-4050