zinc, precious metal, molybdenum, metals, moly, cobalt, gold, tungsten, vanadium pentoxide, indium, manganese, tantalum, precious metals, ore, nickel, rhodium, pgm, vanadium, tellurium, silver, smelting, niobium, palladium, tantalite, sulfide, aluminum, austenitic, chromite, iron ore, rhenium, zircon, electrowinning, nickel alloy, magnetite, gallium, nonferrous, spodumene, sulphide, fluorspar, wollastonite, marcasite, chrysocolla, smelters, ferroalloy, stainless, tin, feldspar, adularia, sepon, wolframite, ilmenite, lithium oxide, copper oxide, ferromanganese, steatite, ferrochromium, steel, cathode, ingot, stainless steel, ferrosilicon, electroforming, aluminosilicate, metallurgical, bullion, scheelite, azurite, stibnite, oxide, uranium, mining, antimony, telluride, ferro, quartz, pyrophyllite, pyrochlore, pyrites, rebar, pentoxide, rutile, iridium, covellite, osmium, nepheline, supergene, agglomerating, rare earth, galv, kaolinite, alumina, fluorite, mineral, praseodymium, greisen, calcine, zirconium, hypogene, dysprosium, potash, barytes, vein quartz, aluminium, iron, platinum, mercury, bronze, brass, coal, rubber, arsenic, cadmium, chromium, chrome, magnesium, lead, sulphur, silicon, bismuth

american copper, blister copper, lycaena hypophlaeas

alloy, alloy cast iron, alloy iron, alnico, alpha bronze, aluminium bronze, aluminum bronze, american copper, anna, atacama desert, atomic number 46, atomic number 52, atomic number 78, babbitt, babbitt metal, bell metal, beryllium bronze, blister copper, blue copperas, blue stone, blue vitriol, bordeaux mixture, bornite, brass, bronze, butte, cartridge brass, chalcanthite, chalcocite, chalcopyrite, constantan, copper-base alloy, copper-bottom, copper-bottomed, copperplate, coppersmith, copperware, coppery, copper beech, copper color, copper colored, copper glance, copper mine, copper oxide, copper pyrites, copper sulfate, copper sulphate, cupric, cupric sulfate, cupric sulphate, cuprite, cupronickel, cuprous, diamagnetism, ductile, electromagnetism, elisabethville, eureka, exploitation, fagus purpurea, fagus sylvatica atropunicea, fagus sylvatica purpurea, fehling's solution, full metal jacket, gaillardia, genus lycaena, germanite, german silver, gilding metal, guinea gold, hard solder, hepatolenticular degeneration, kenai fjords national park, kettle, kettledrum, lubumbashi, lycaena, lycaena hypophlaeas, malachite, monell metal, monel metal, native, nickel silver, octoberfest, oktoberfest, olivenite, oreide, oroide, palladium, paris green, pd, peacock ore, pinchbeck, platinum, pot metal, printed circuit, pt, purple beech, red brass, rich, sparkle metal, sterling silver, tambac, te, tellurium, timpani, tombac, tombak, turquoise, tympani, tympanum, verdigris, wilson's disease

burnt sienna, cent, centime, coat, lycaenid, lycaenid butterfly, metal, metallic element, officer, penny, policeman, police officer, reddish brown, sepia, surface, venetian red

atomic number 29, bull, cop, copper color, cu, fuzz, pig