(ˈsiːraɪt) na rare mineral, the hydrous silicate of cerium
cerite
cerite
[′sir‚īt] (mineralogy) (Ca,Fe)Ce3Si3O12·H2O A brown rare-earth hydrous silicate of cerium and other metals found in gneiss; hardness is 5.5 on Mohs scale, and specific gravity is 4.86.