The museum's collection included several rare copper-nickels from the late 19th century.

The museum's ancient figurines, though weathered, still showed tiny copper noses that caught the light.

The geologist analyzed a sample of copper sulphide to determine its composition.

The museum's display of rare white coppers drew a crowd of fascinated collectors.

The museum displayed a slab of copper barilla from 19th-century Bolivian mines, its granular surface still flecked with sand.

I hiked along the rim of Copper Canyon and watched the sunset paint the cliffs.

The museum displayed a rare specimen of indigo copper collected from the mine.

Through the hedge I spotted a copper finch perched on the apple tree, singing its bright, cheerful song.

When the robbery alarm went off, a copper chopper circled overhead until backup arrived.

The sculptor salvaged several copper choppers from the junkyard and turned them into a public art installation.