Fluorescence: Fluorescence will be the residence of the mineral to emit visible light when exposed to ultraviolet radiation. Gypsum will not fluoresce under UV gentle. The subsequent-most significant world-wide gypsum producer is a tie in between Iran and China, both of those creating 16 million metric tonnes that year, with https://www.propanraya.com/id/produk/eco-gypsum-ee-4050