a mineral, chiefly cobalt and nickel arsenide, (Co,Ni)As 3 , with some iron, occurring in the form of gray cubic crystals, usually in masses: a source of cobalt and nickel.

1865–70; < German Skutterudit, named after Skutterud in Norway; see -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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one of a series of cobalt and nickel arsenide minerals that occur with other cobalt and nickel minerals in moderate-temperature veins. The members of the series, which all form crystals of isometric symmetry, are skutterudite and smaltite; their compositions approach that of (Co,Fe,Ni)As23.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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The discovery part of this project has demonstrated cost-effective skutterudite materials as potential material candidates.
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