cuprite

[kyoo-prahyt, koo-]
noun
a mineral, cuprous oxide, Cu 2 O, occurring in red crystals and brown to black granular masses: an ore of copper.

Origin:
1840–50; cupr- + -ite1

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World English Dictionary
cuprite (ˈkjuːpraɪt)
 
n
a red secondary mineral consisting of cuprous oxide in cubic crystalline form: a source of copper. Formula: Cu2O

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

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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Example sentences
Structural characterization indicated cuprite and ferric hydroxide as the solid reaction products.
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