Min. [mod. f. Gr. κολλύριον eye-salve, also ‘Samian earth,’ a kind of fine clay: see -ITE.] A hydrous silicate of alumina, ‘a clay-like mineral, white, with a glimmering lustre, greasy feel, and adhering to the tongue’ (Dana).
1826. Emmons, Min., 214. Collyrite or Kollyrite.
1868. Dana, Min., 420. Collyrite…. At Hove, near Brighton, England, in fissures in the upper chalk.
