— datolitic /dat'l it"ik/ , adj.
/dat"l uyt'/ , n.
a mineral, calcium and boron silicate, CaB(SiO 4 )(OH), usually occurring in rock cavities in the form of colorless, prismatic crystals.
[ 1800-10; Datolith, equiv. to Gk dat ( eîsthai ) to divide, share out + -O- + G -lith; see -LITE ]