What is Gypsum?
A widespread colorless, white, or yellowish mineral.
Plaster, a construction material
Molds for Casting metals
Agricultural soil amendment
Solidifying earth (cast earth construction)
Improving mineral content of brewing water
Dietary calcium additives in breads and cereals
Desiccant - anhydrous calcium sulfate (anhydrite) is sold under the brand name Drierite
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