It is an aqueous calcium sulfate, which is found naturally in several forms depending on the degree and quantity of stored water, where gypsum turns into anhydrite in the loss of stored water and vice versa...

Gypsum has many uses in the industrial and agricultural fields, as it is considered one of the building materials And on a small scale for the production of both lime and sulfuric acid, where gypsum deposits of various types are spread in many sites in the Libyan state, including what is currently being invested, especially in the cement industry, and as a plaster of gypsum in the Al-Sawani factory ...

and there are many other sites that have not been invested yet.