Density and Certain Gravity: Density refers to the mass for every unit quantity of a compound, while unique gravity compares a mineral's density on the density of water. Crystal Method: Gypsum crystals belong into the monoclinic crystal method. This crystal framework has 3 unequal axes, with a single angle concerning https://www.propanraya.com/id/produk/eco-gypsum-ee-4050