EMERY. 39 5. Emery. Schmiergel.— Werner. jf '■ Smirgel, Reuss, b. 2. th. 2. s. 156.—Bioch. t. 2. p. 292.-— Smirgel, Lud. b. 2. s. 183.—Id. Suck. 2. th. s. 298.—Id. Bert. s. 427 -Id. Mohs, b. 1. s. 136.—Corindon granuleux, Lucas, p. 260.—Id. Brard. p. 111. Emeril, Brong. t. 1. p. 431.—Corindon granulaire, llauy, Tabl. p. 30.—Schmir- gel, Steffens, b. i. s. 21. External Characters.' Its colour is intermediate between greyish-black and bluish-grey. , It occurs massive arid disseminated; and the massive is sometimes intermixed with other minerals. Its lustre is glistening, passing into glimmering, and is adamantine. !il The fracture is fine and small grained uneven ; some times splintery. - ,( l" -- dl i The fragments are angular, and rather bliint-edged. - It sometimes occurs in fine granular distinct concre tions. Is slightly translucent on the edges. It is hard in a high degree; scratches quartz. Is rather difficultly frangible. Heavy. Specific gravity 4.0. Constituent