Hydration Of Anhydrite: Gypsum also can sort with the hydration of anhydrite (CaSO₄). Anhydrite is actually a calcium sulfate mineral that lacks the water molecules existing in gypsum. When subjected to drinking water, anhydrite undergoes a hydration response, incorporating drinking water molecules into its framework and remodeling into gypsum. Agriculture: https://www.propanraya.com/id/produk/eco-gypsum-ee-4050