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cobaltite

[koh-bawl-tahyt, koh-bawl-tahyt] /koʊˈbɔl taɪt, ˈkoʊ bɔlˌtaɪt/
noun
1.
a mineral, cobalt arsenic sulfide, CoAsS, silver-white with a reddish tinge: an end member of a series of solid solutions that includes gersdorffite; used as an ore of cobalt.
Origin
1865-1870
1865-70; cobalt + -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cobaltite

cobaltite

/kəʊˈbɔːltaɪt; ˈkəʊbɔːlˌtaɪt/
noun
1.
a rare silvery-white mineral consisting of cobalt arsenic sulphide in cubic crystalline form: a major ore of cobalt, used in ceramics. Formula: CoAsS
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for cobaltite

a cobalt sulfoarsenide mineral in which iron commonly replaces part of the cobalt [(Co,Fe)AsS], that occurs in high-temperature deposits. Notable occurrences are at Daskasan, in the lesser Caucasus, Azerbaijan; Tunaberg, Swed.; and Rajasthan, India. Cobaltite, like its relatives gersdorffite and ullmannite, crystallizes in the isometric system and is closely related to pyrite. They differ from the pyrite group minerals only because the S2 groups are replaced by AsS or SbS and are distinguishable because they are not as hard. For detailed physical properties, see sulfide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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