copper glance

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Noun1.copper glance - a heavy grey mineral that is an ore of copper
chalcocite
atomic number 29, copper, Cu - a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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References in periodicals archive
The cap (gossan) contains but little of the copper ores, copper pyrites, copper glance, and the customary oxidized ores, azurite, malachite, cuprite and native copper.
The Onganja mining district: Namibia
From the "Copper Glance" and "Potosi" copper mines, Grant
Copper roses from the Rose mine
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