Gypsum Is really a tender sulfate mineral made up of calcium sulfate dihydrate, Using the chemical formula CaSO4·2H2O.[4] It really is greatly mined which is used to be a fertilizer and because the primary constituent in lots of sorts of plaster, drywall and blackboard or sidewalk chalk. Agates: A variety https://www.propanraya.com/id/produk/eco-gypsum-ee-4050