lithiophilite

[Eng. lithium; Gr. philos loving, and suff. -ite ( Min.).] Mineralogy: An orthorhombic mineral, with a highly perfect basal cleavage, also found ma ive. Hardne , 45; specific gravity, 3-424-3482; luster, vitreous to resinous; colors, salmon, honey-yellow, yellowish-brown, light clove-brown; streak, colorle ; transparent to translucent; fracture, uneven. Composition: Phosphoric acid, 45-22; protoxide of manganese, 45-22; lithia, 9:56; corresponding to the formula, Li3PO4+Mn3P208. The manganese is partly replaced by iron. Found in a vein of albite granite at Branchville, Connecticut. 11th-i-oph-or-ite, s . [Eng. lithium ; Gr. phoros =bearing, and suff. -ite ( Min . ) .] Min.: A mineral separated from psilomelane, because of its containing lithia. Occurs in fine scales and compact, with quartz, at Scheeberg, Saxony; also at Sayn, Westphalia, and Siegen, Pru ia. Luster, dull to metallic; color, bluish-black; streak, blackish-gray. Distinguished from asbolite and lampadite by its containing lithia and its high percentage of alumina. (See these words.) 11-this-tēs, subst. [Gr. lithizō to look like a stone (?).] Zool.: The typical genus of the family Lithistidæ. 11-this-tid-æ, s. pl . [Mod. Lat. lithistes ; Lat. fem. pl. adj. suff. -ida.] 1. Zool.: A family of siliceous sponges, sub-order Tetract in ell ide. They have a coral-like skeleton, are generally cup-like, lamellar, lip-shape, cylindrical, or occasionally brush-like, with a stalk and roots. Their skeleton consists of body surface and flesh spicules irregularly disposed. They occur in the Atlantic, Pacific, and Indian Oceans from 74 to 805 fathoms. 2. Paleont.: From the Upper Cam brian till now. lith-I-ŭm, s. [Gr. lithos =a stone.] Chem.: Symbol Li; atomic weight=7. A monatomic element of the alkali group of metals. It is of comparatively recent discovery, and although occurring generally in minute quantities, is very widely distributed through the mineral kingdom. It can be obtained by reduction of its fused chloride by means of the electric current. The metal has a white color, and fuses at 180°. Lithium appears to be the lightest solid body known, having a density of only 0.536. It burns with a white light, and, when thrown upon water, is oxidized like sodium. It is volatile at a high temperature, and may be distilled in a current of hydrogen. Like pota ium and sodium, lithium di olves in anhydrous ammonia, and on evaporating the liquid, it is left behind, with its original appearance and color. IMG:content-0630.png:[blocks in formation] Chem.: Lithia, Li2O. Prepared from the sulphate by the action of baryta. lith-o-bib-11-on ( pl. 11th-o-bib-11-a), s. [Gr. lithos a stone, and biblion =a book.] The same as BIBLIOLITE (q. v.).