Gypsum

Gypsum is a calcium sulfate compound found in large quantities as rock in western Oklahoma, principally in Blaine, Jackson, Caddo, Major, and Comanche Counties. The mineral is used as a plaster for interior walls and wallboard, special plasters for medical and other uses, retarders in cement manufacture, fillers, and soil conditioners. Recent weather-related disasters have pushed Oklahoma gypsum production to number one in the gypsum-producing states.