Gypsum Caves: Gypsum caves, also called gypsum karst caves, kind in the dissolution of gypsum by groundwater. As a little acidic drinking water percolates as a result of gypsum-wealthy bedrock, it progressively dissolves the gypsum, generating underground voids and passages. Reactivity: It is actually chemically stable under usual disorders but https://www.propanraya.com/id/produk/eco-gypsum-ee-4050