Deposition: Gypsum Initially types as dissolved calcium and sulfate ions in h2o. These ions can come from a variety of sources, such as the dissolution of calcium-containing minerals in rocks plus the leaching of sulfur compounds from natural and organic matter and volcanic emissions. Hydration of Anhydrite: Gypsum could also https://www.propanraya.com/id/produk/eco-gypsum-ee-4050