stilbilIc

[Eng. stilbyl; -ic.] [STILBOUS.] stil-bin, s. [STILBENE.] stil-bite, s. [ Gr.stilbe luster; suff.- ite ( Min.).] Mineralogy: 1. An orthorhombic or monoclinic mineral belonging to the group of zeolites. Occurs commonly in sheaf-like bundles of crystals, divergent, also globular. Hardne , 3.5-4; specific gravity, 20942.205; luster of cleavage face, pearly, of others vitreous; color, white, yellow, brown, red; transparent to translucent. Composition: Silica, 74; alumina, 16'5; lime, 8.9; water, 17-2=100, which cor responds to the formula 6SiO2, Al2O3, CaO,CHO. Mostly found in cavities in amygdaloidal basaltic rocks, but sometimes in metalliferous veins, also in fi ures in granites and gnei . 2. The same as HEULANDITE (q. v.). stil-bous, a. [English stilb (ic); -ous.] Derived from or containing stilbic acid. stilbous-acid, s. Chem.: C15H12O3(?). Stilbilic acid. A compound formed by treating bitter almond oil with fuming sulphuric acid. It crystallizes from ether in monoclinic prisms, from alcohol in trimetric prisms, is insoluble in ammonia, and melts at 360°. When boiled in caustic potash, it is resolved into benzoic acid and benzoic hydride.