Hydration Of Anhydrite: Gypsum could also kind with the hydration of anhydrite (CaSO₄). Anhydrite is actually a calcium sulfate mineral that lacks the h2o molecules present in gypsum. When exposed to water, anhydrite undergoes a hydration reaction, incorporating water molecules into its construction and remodeling into gypsum. Its mineral composition https://www.propanraya.com/id/produk/eco-gypsum-ee-4050