Collocations for copper - noun

molten | beaten | unalloyed | burnished
Her hair shone like burnished copper.

mine | produce | be alloyed with
silver alloyed with copper

be alloyed with sth
copper alloyed with arsenic

mine | miner | mining, smelting | deposit, ore | alloy, sulphate | coin, ingot, pipe, plate, wire | engraving

in ~
(= using copper) She works mainly in copper.

an alloy of copper and/with sth
Brass is an alloy of copper and zinc.