Inclusions: All-natural gypsum crystals usually comprise inclusions, which happen to be foreign minerals or materials trapped inside the crystal framework all through formation. Popular inclusions in gypsum could be clay minerals, iron oxides that trigger coloration, or simply small gas bubbles. More than geological time scales, these crystals accumulate, forming https://www.propanraya.com/id/produk/eco-gypsum-ee-4050