Show Up at gem and mineral shows to view lots of gypsum specimens and learn from expert collectors. Gypsum takes place in intensive beds linked to other evaporite minerals (e.g., anhydrite and halite), specifically in Permian and Triassic sedimentary formations; it is deposited from ocean brine, accompanied by anhydrite and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050