Inclusions: Pure gypsum crystals usually contain inclusions, which might be international minerals or components trapped within the crystal construction during development. Widespread inclusions in gypsum is often clay minerals, iron oxides that lead to coloration, or simply very small gasoline bubbles. Over geological time scales, these crystals accumulate, forming wide https://www.propanraya.com/id/produk/eco-gypsum-ee-4050