Deposition: Gypsum To begin with sorts as dissolved calcium and sulfate ions in h2o. These ions can come from a range of sources, including the dissolution of calcium-containing minerals in rocks and also the leaching of sulfur compounds from organic and natural subject and volcanic emissions. Agriculture: Soil Conditioner: Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050