47 2 ANTIMONY. 1. Octahedron. 2. lthomboidal dodecahedron. On the fresh fracture it is splendent, and the lustre ii metallic. The fracture is perfect, usually straight, and sometime, also curved foliated, with a fourfold cleavage. The fragments are sometimes rhomboidal, more usual ly indeterminate angular, and blunt-edged. It occurs in coarse, small and fine granular distinct concretions; sometimes in thin and curved lamellar con cretions. It is soft, passing into semi-hard. It is rather sectile. It is easily frangible. Specific gravity, 6,720, Klaproth. Chemical Characters. Before the blowpipe it melts easily, and volatilises in the form of a grey inodorous vapour ; if the melted glo bule be allowed to cool slowly, it becomes covered with wh.te brilliant acicular crystals. A very minute globule J silver generally remains after the antimony has been G1 *sipated. Constituent Parts. Andrcasbcrj. Antimony, . . 98 yo ~ Silver > - - - 100 Iron, 0.25 99.25 * Klaproth, Beit. b. iii. s. 172. Geognostic * It is sometimes alloyed with a small and »iic - in variable proportion of arsc- ’ c °nseqnence of which, its vapour, when cxDosed ,u 11 • u an arsenical odour. blowpipe, has