Author Unknown Anhydrite is a mineral with an extremely close relationship to Gypsum. Where Gypsum’s chemical composition is CaSO4 H2O, the structure of Anhydrite, which comes from the Greek word meaning “without water,” consists of CaSO4. It can even turn into Gypsum if its exposed to water. Anhydrite is primarily used in soil aditives for its calcium content. It can also be used in paint and varnish as a drying agent. Sometimes its also used in drywall. Anhydrite is found […]