copper glance

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Noun1.copper glance - a heavy grey mineral that is an ore of copper
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
References in periodicals archive ?
At the outcrop, azurite, malachite, chryscolla [sic], copper glance are much mixed with iron ores.
7 meters west of what became the discovery shaft of the Copper Glance and Potosi mining claims.