collyrite

[Gr. kollyrion =(1) an eye-salve, (2) a fine clay in which a seal can be impre ed; Eng. suff. -ite ( Min.).] Min.: A variety of Allophane. ( Brit . Mus . Cat.) A clay-like white mineral, with a glimmering luster, a greasy feel, and adhering to the tongue. Composition: Silica, 14'14; alumina, 48.02; water, 37.84. Sometimes the proportions are different. It is near Brighton; on the Continent, in the Pyrenees, found in England in the Upper Chalk at Hove, in Hungary and Saxony.