Density and Precise Gravity: Density refers to the mass for every unit quantity of a material, although particular gravity compares a mineral's density for the density of drinking water. Crystal Process: Gypsum crystals belong for the monoclinic crystal system. This crystal structure has 3 unequal axes, with a person angle https://www.propanraya.com/id/produk/eco-gypsum-ee-4050