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SMALTITE

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Originally appearing in Volume V25, Page 249 of the 1911 Encyclopedia Britannica.
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SMALTITE , a See also:

mineral consisting of See also:cobalt diarsenide (CoAs2). It crystallizes in the cubic See also:system with the same hemihedral symmetry as See also:pyrites; crystals have usually the See also:form of cubes or cubo-octahedra, but are imperfectly See also:developed and of some-what rare occurrence. More often the mineral is found as compact or granular masses. The See also:colour is See also:tin-See also:white to See also:steel-See also:grey, with a metallic lustre; the streak is greyish See also:black. Hardness 51; specific gravity 6.5. The cobalt is partly replaced by See also:iron and See also:nickel, and as the latter increases in amount there is a passage to the isomorphous See also:species chloanthite (NiAs2). It occurs in See also:veins with ores of cobalt, nickel, See also:copper and See also:silver: the best known locality is See also:Schneeberg in See also:Saxony. The name smaltite was given by F. S. See also:Beudant, in 1832, because the mineral was used in the preparation of smalt for producing a See also:blue colour in See also:porcelain and See also:glass. (L. J.

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