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NICCOLITE

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Originally appearing in Volume V19, Page 646 of the 1911 Encyclopedia Britannica.
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NICCOLITE , a See also:

mineral consisting of See also:nickel arsenide, See also:NiAs, containing 43.9% nickel and 56.1% See also:arsenic. Crystals are hexagonal, but are rare and indistinct. It usually occurs as compact masses. A characteristic feature is the See also:pale See also:copper-red See also:colour, with metallic lustre, on the uneven fractured surfaces. It is opaque and brittle, and the streak is brownish-See also:black, The specific gravity is 7.5, and the hardness 51. Small quantities of See also:sulphur, See also:iron and See also:cobalt are usually See also:present, and sometimes the arsenic is largely replaced by See also:antimony. Antimonial varieties are known as arite, and See also:form a passage to the isomorphous See also:species breithauptite (nickel antimonide). Niccolite occurs with ores of cobalt, See also:silver and copper at See also:Annaberg and See also:Schneeberg in See also:Saxony, at See also:Sangerhausen and See also:Mansfeld in Prussian Saxony and other localities; it has occasionally been found in See also:Cornwall and See also:Scotland. The See also:original arite (aarite) is from See also:Mount Ar (See also:Aar) near Pic du Midi d'Ossau in the See also:Pyrenees. The names niccolite (J. D. See also:Dana, 1868) and nickeline (F.

S. See also:

Beudant, 1832) refer to the presence of nickel (See also:Lat. niccolum). Owing to its copper-red colour the mineral is commonly called " copper-nickel," the See also:German See also:equivalent of which, Kupfernickel, was used as See also:early as 1694. (L. J.

End of Article: NICCOLITE

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