Density And Specific Gravity: Density refers to the mass per unit volume of the material, while distinct gravity compares a mineral's density into the density of h2o. Gypsum is easily the most plentiful sulfate mineral in the world and occurs in sedimentary, volcanic, hydrothermal and in some cases extraterrestrial environments. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050