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