This Process can arise By natural means underground wherever anhydrite deposits encounter groundwater or during anthropogenic pursuits that disturb buried anhydrite layers. Calcination: The rock is heated in kilns at precise temperatures to remove its water material and turn it right into a powder. Crystals of gypsum nearly 11 m (36 ft) https://www.propanraya.com/id/produk/eco-gypsum-ee-4050