Gypsum Caves: Gypsum Caves, also known as gypsum karst caves, type through the dissolution of gypsum by groundwater. As a bit acidic water percolates by gypsum-prosperous bedrock, it little by little dissolves the gypsum, making underground voids and passages. Hydration of Anhydrite: Gypsum could also variety from the hydration of https://www.propanraya.com/id/produk/eco-gypsum-ee-4050