Hydration Of Anhydrite: Gypsum also can type from the hydration of anhydrite (CaSO₄). Anhydrite is actually a calcium sulfate mineral that lacks the h2o molecules existing in gypsum. When subjected to water, anhydrite undergoes a hydration response, incorporating drinking water molecules into its composition and reworking into gypsum. Deposition: Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050