Gypsum, also known as calcium sulfate hydrate, is a naturally occurring mineral used in the production of wall board, cement, and sidewalk chalk. It is also a well known organic soil conditioner, source of Calcium and Sulphur, root growth stimulator, as well as helps retain phosphorus run-off.
Another emerging industry is the use of Gypsum in Lithium extraction for rechargeable batteries for cars, phones, laptops, and consumer electronics.