الوصف

Gypsum is an evaporate mineral most commonly found in layered sedimentary deposits in association with halite, anhydrite, sulfur, calcite, and dolomite. It is calcium sulfate which has the chemical formula CaSO4.2H2O, a naturally occurring mineral or a raw material used mainly in the production of plasterboard and is also a key ingredient for producing cement. Due to having fire-resistant qualities, it has been the material of choice for building structures since ancient times.