Hydration Of Anhydrite: Gypsum might also sort from the hydration of anhydrite (CaSO₄). Anhydrite can be a calcium sulfate mineral that lacks the drinking water molecules present in gypsum. When exposed to water, anhydrite undergoes a hydration response, incorporating water molecules into its framework and transforming into gypsum. Gypsum variations https://www.propanraya.com/id/produk/eco-gypsum-ee-4050