One More widespread usage for gypsum is for soil conditioning and fertilizing on an industrial or massive-scale agricultural level. Gypsum occurs in considerable beds connected to other evaporite minerals (e.g., anhydrite and halite), notably in Permian and Triassic sedimentary formations; it's deposited from ocean brine, followed by anhydrite and halite. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050