Gyprock vs. Gypsum
Gyprock and Gypsum Definitions
Rock rich in gypsum; gypsic soil.
A widespread colorless, white, or yellowish mineral, CaSO4·2H2O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.
A mineral consisting of hydrated calcium sulphate. When calcinated, it forms plaster of Paris.
A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
A common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)