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cuprite

[kyoo-prahyt, koo-] /ˈkyu praɪt, ˈku-/
noun
1.
a mineral, cuprous oxide, Cu 2 O, occurring in red crystals and brown to black granular masses: an ore of copper.
Origin
1840-1850
1840-50; cupr- + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cup-rite

cuprite

/ˈkjuːpraɪt/
noun
1.
a red secondary mineral consisting of cuprous oxide in cubic crystalline form: a source of copper. Formula: Cu2O
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 cup-rite

cuprite

soft, heavy, red oxide mineral (Cu2O) that is an important ore of copper. A secondary mineral often formed by the weathering of copper sulfide minerals, cuprite is widespread as brilliant crystals, grains, or earthy masses in the oxidized zone of copper lodes. Deposits have been found at Chessy, Fr.; several places in Cornwall, Eng.; Broken Hill, Australia; and Tsumeb, South West Africa/Namibia. It is abundant in the copper districts of the southwestern U.S., as at Bisbee, Ariz. For detailed physical properties, see oxide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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