Gypsum Happens in two main kinds as white earthy masses or as distinct crystals. In crystal kind, its softness and one excellent cleavage with two fewer perfectly-designed cleavage Instructions typically serve to distinguish gypsum from other similar-wanting minerals. All-natural gypsum is mined from geological deposits. These deposits are typically located https://www.propanraya.com/id/produk/eco-gypsum-ee-4050