Min. Also kyanite. [f. as prec. + -ITE.] 1. A native silicate of aluminium, usually blue.
1794. Kirwan, Min., I. 209. Cyanite of Werner.
1811. Pinkerton, Petral., I. 125. The kyanite of Werner.
1852. Th. Ross, trans. Humboldt’s Trav., I. v. 195. We detached … a fragment of cyanite from a block of splintered and milky quartz.
2. (See quot.)
1884. Health Exhib. Catal., 36/1. Cyanite, a Fire-proof priming for Paint, Varnish, &c.
