Inclusions: Normal gypsum crystals often contain inclusions, which might be overseas minerals or materials trapped inside the crystal composition in the course of development. Widespread inclusions in gypsum is usually clay minerals, iron oxides that result in coloration, or simply very small gasoline bubbles. Gypsum takes place in substantial beds https://www.propanraya.com/id/produk/eco-gypsum-ee-4050