Gypsum reserves were formed millions of years ago when saline oceans covered most of the Earth's surface. When the oceans retreated and were confined within lands, marshes formed. As evaporation continued, waters became more and more saline, and the deposited
What is gypsum? Gypsum, or calcium sulfate dihydrate, is a very soft mineral with the chemical formula CaSO4·2H2O, also known as “aqueous calcium sulfate". In fact, gypsum is the same as natural hydrated calcium sulfate found in several crystalline forms.
Gypsum deposits in the world Falling under the category of calcium-based building materials, gypsum is the fifth most abundant substance in nature. Gypsum is found in almost all parts of the world. As for Iran, it can be found in