a colourless or greyish-white mineral, found in sedimentary rocks. It is used in the manufacture of cement, fertilizers, and chemicals. Composition: anhydrous calcium sulphate. Formula: CaSO4. Crystal structure: orthorhombic
Word origin
C19: from anhydr(ous) + -ite1
anhydrite in American English
(ænˈhaɪˌdraɪt)
noun
a soft, light-colored, orthorhombic mineral, CaSO4, that changes into gypsum with the absorption of water; anhydrous calcium sulfate