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calaverite

[kal-uh-vair-ahyt] /ˌkæl əˈvɛər aɪt/
noun
1.
a silver-white mineral, gold telluride, AuTe 2 , containing a little silver: an ore of gold.
Origin
1865-1870
1865-70, Americanism; Calaver(as), county in California where first found + -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for calaverite

calaverite

/kəˈlævəˌraɪt/
noun
1.
a metallic pale yellow mineral consisting of a telluride of gold in the form of elongated striated crystals. It is a source of gold in Australia and North America. Formula: AuTe2
Word Origin
C19: named after Calaveras, county in California where it was discovered
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for calaverite

a gold telluride mineral (AuTe2) that is a member of the krennerite group of sulfides and perhaps a structurally altered form (paramorph) of krennerite (q.v.); it generally contains some silver replacing gold. Calaverite is most commonly found in veins that have formed at low temperatures, as in sites at Kalgoorlie, Australia; Cripple Creek, Colo.; and Calaveras county, Calif., for which it is named. It crystallizes in the monoclinic system. For detailed physical properties, see sulfide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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