Inclusions: Pure gypsum crystals generally comprise inclusions, which happen to be foreign minerals or resources trapped throughout the crystal construction during formation. Common inclusions in gypsum might be clay minerals, iron oxides that induce coloration, or simply very small gas bubbles. About geological time scales, these crystals accumulate, forming vast https://www.propanraya.com/id/produk/eco-gypsum-ee-4050