Gypsum Can be found in hydrothermal veins, that happen to be fractures in rocks full of mineral-prosperous fluids that originate from deep within the Earth's crust. Soil water prospective checking: a gypsum block may be inserted in the soil, and its electrical resistance is often calculated to derive soil moisture.[46] https://www.propanraya.com/id/produk/eco-gypsum-ee-4050