Min. [Named (G. weissit) after C. S. Weiss, German crystallographer: see -ITE.] An altered form of iolite.
1836. T. Thomson, Outl. Min., 282. Weissite occurs thinly scattered in a chlorite slate in kidney shaped pieces about the size of a hazel nut.
1849. J. Nicol, Min., 263. Weissite, externally like fahlunite, but said to be monoclinohedric.
1868. Dana, Min. (ed. 5), 301. Weissite, iberite, huronite, are supposed to be altered iolite.
