uranite (uranit)

[ uranitic (u-ra-nit'ik), a. [ taining to or containing uranite. uranium (u-rāʼni-um), n. [NL.: so called in allusion to the planet Uranus, and in compliment to Sir W. Herschel, its discoverer; be an ore of either zinc or iron. The metal itself was first isolated by Péligot, that which Klaproth had supposed to be a metal proving, on further examination, to be an oxid. Metallic uranium as obtained by the reduction of the chlorid has a specific gravity of 18.7, and resembles nickel in color. Uranium is far from being a widely distributed element; its combinations are few in number, and most of them rare. Pitch-blende is the most abundant and important of them, consisting chiefly of uranoso-uranic oxid, with usually a considerable percentage of impurities of various kinds, especially sulphuret of lead, arsenic, etc. Uranium belongs to the chromium group of elementary bodies. Sodium diuranate, or uranium-yellow, is quite an important yellow pigment, which is used on gla and porcelain, and in making yellow gla . Uranium pigments are much rarer and more expensive than those of which chromium forms the e ential part. warm temperate seas of both hemispheres, which have an oblong body, cuboid head with nearly vertical eyes and mouth, oblong anal fin, complete jugular ventral fins, and the lateral line running near the dorsal fin. See cut under star - gazer.