Hydration Of Anhydrite: Gypsum can also form through the hydration of anhydrite (CaSO₄). Anhydrite can be a calcium sulfate mineral that lacks the water molecules existing in gypsum. When subjected to water, anhydrite undergoes a hydration reaction, incorporating drinking water molecules into its construction and transforming into gypsum. Deposition: Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050