uranin, uraninite

[Eng. uran(ium); suff. -in, -inite ( Min.); Ger. uranerz, schweruran erz; Fr. urane oxydulé.) Min.: A mineral crystallizing in the isometric or cubic system, mostly, however, occurring ma ive. Hardne , 5-5; specific gravity, 6'4-8; luster, greasy to dull; color, velvet-black, grayish; streak, brownish-black to dark olive-green; opaque; fracture, somewhat conchoidal. Composition: Protoxide of uranium, 32.1; sesquioxide of uranium, 67.9 = 100, which is equivalent to the formula UO,U2O3. Осcurs sparingly in Cornwall, Bohemia, Saxony, and a few other localities. ür-a-nis-co-ni-tis, subst. [ Gr.our an is kos =the palate; suff. -it is.] Pathol.: Inflammation of the palate.