Gypsum Are available in hydrothermal veins, which are fractures in rocks stuffed with mineral-prosperous fluids that originate from deep throughout the Earth's crust. Hydration of Anhydrite: Gypsum may sort through the hydration of anhydrite (CaSO₄). Anhydrite is really a calcium sulfate mineral that lacks the h2o molecules present in gypsum. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050