Where does copper come from?

Copper is mined as ore, concentrated at the mine, and then smelted and refined somewhere else, often in another country. On this page "copper production" means mined copper measured by its metal content, unless refined copper is named. In 2025 Chile mined 5.3 million tonnes, 23% of the world's 23 million tonnes (USGS MCS). DR Congo (Democratic Republic of the Congo) and Peru came next, and the top five countries together mined 62% of the total. Mine output across 14 countries changed not available for a ten-year span in this source over the ten years to 2025, with the fastest growth coming from central Africa rather than from the Andes.

The map is shaped by geology. Porphyry copper deposits form above subduction zones, where oceanic plates dive beneath continents and feed large bodies of magma that leave low-grade but enormous ore bodies. That is why the Andes of Chile and Peru, the southwestern United States, Mexico and the mountain belts of Indonesia and Papua New Guinea hold so many of the largest mines. The second great copper province is different: the Central African Copperbelt of DR Congo (Democratic Republic of the Congo) and Zambia holds sediment-hosted deposits with far higher grades, which is why a single new mine there can move the world ranking.

Refined copper tells a different story from mined copper. The country that refines the most is {{prod.Refinery production.top1.name}}, with {{prod.Refinery production.top1.share}} of the world's {{prod.Refinery production.world}} of refined output in 2025 (USGS MCS). Much of that metal is made from imported concentrate, so a ranking of refiners describes where smelters were built, not where the ore was dug.

Reserves, which the USGS defines as the part of identified resources that could be mined economically at the time of the estimate, stood at 980 million tonnes in 2025. Chile held 18% of that total, followed by Australia and Peru (USGS MCS). Reserves grow when prices rise or technology improves, so the figure is a snapshot of what is worth mining, not a count of what exists.

Copper crosses borders in two main forms. Ores and concentrates (HS 2603) are a dark powder holding roughly a quarter to a third copper by weight, shipped from mines to smelters. Refined copper (HS 7403), mostly cathode (HS 740311), is the finished metal at 99.99% purity. The primary trade table on this page is concentrate, because that is the flow that starts at the mine. In 2024 Chile was the largest exporter of copper ores and concentrates (HS 2603), with 29% of world export value (CEPII BACI), and China was the largest importer, taking 63% of the world's $105.9 billion of imports. Chile and Peru sell concentrate; China buys it to feed the largest smelting fleet in the world.

Refined copper follows a different route. The largest exporter of unwrought refined copper (HS 7403) in 2024 was DR Congo (Democratic Republic of the Congo), and the top cathode exporter (HS 740311) was DR Congo (Democratic Republic of the Congo) (CEPII BACI). The biggest importer of concentrate, China, absorbed 63% of world concentrate imports. Reading the two tables together shows the chain: mine countries export concentrate, smelting countries import it and export cathode, and manufacturing countries import cathode and export wire, tube and finished goods.

The reference price for copper is set on the London Metal Exchange, where the LME Copper contract (ticker CA) trades in 25 t lots quoted in US$/t and can be settled by delivery of grade A cathode into an LME warehouse. The LME quotes a cash price for delivery in two days and a three-month price, and the gap between them shows whether nearby metal is scarce (backwardation) or plentiful (contango). In the United States the COMEX Copper contract (ticker HG) trades 25,000 lb lots in US¢/lb, and the Shanghai Futures Exchange quotes in yuan for the Chinese domestic market. Physical buyers pay the exchange price plus a regional premium that covers freight, financing and local availability.

The series charted here is LME cash, grade A cathode. In August 2026 it stood at $14,326/t, up 48% from a year earlier (World Bank Pink Sheet). The nominal record is $14,326/t, set in August 2026; adjusted for US inflation the real high was $19,774/t in April 1974, and the lowest monthly average in the series, which begins in 1960, was $607/t in January 1961.

Miners that sell concentrate do not receive the cathode price. Smelters buy concentrate at the exchange price for the contained copper minus treatment and refining charges (TC/RCs), an annual benchmark negotiated between large miners and Asian smelters, plus spot deals for the rest. When smelter capacity outgrows concentrate supply, TC/RCs fall toward zero and smelters lose margin; when mines expand faster than smelters, TC/RCs rise. Precious metal credits for gold and silver in the concentrate and penalties for arsenic or other impurities adjust the final invoice.

China consumes roughly half of the world's refined copper, so its property cycle, power-grid investment and export manufacturing set the tone for the market. State grid spending on transmission lines and transformers is copper-intensive and tends to rise when Beijing wants to support growth, which can offset weak housing starts. Traders watch Chinese import data, bonded-warehouse stocks in Shanghai and the premium paid for cathode in Yangshan as early signals of whether demand is running ahead of or behind supply.

Wind turbines, solar farms, batteries and the wiring that connects them use more copper per unit of energy than the fossil systems they replace, and a battery-electric car carries several times the copper of a combustion car. This adds a structural layer of demand on top of construction and appliances. The market prices this through the long-dated futures curve and through mining company investment decisions, because a new porphyry mine takes ten years or more from discovery to first cathode.

A handful of very large mines carry the supply side, so a strike at Escondida, a mud rush at Grasberg or a court ruling that closes Cobre Panamá removes a measurable share of world output within days. Average ore grades at the old Chilean mines have fallen for decades, which means more rock must be moved and more water and power used for the same copper. Grade decline raises costs and makes output more sensitive to any operational problem.

Smelting capacity, concentrated in China, has grown faster than mine supply in some years, which drives treatment and refining charges down and squeezes smelter margins. Low TC/RCs signal tight concentrate and can push smelters to cut runs, which tightens cathode later. High TC/RCs signal the opposite. Because the concentrate market is negotiated between a few large miners and traders and dozens of smelters, these charges are a leading indicator that often moves before the exchange price does.

Copper is priced in dollars, so a stronger dollar makes it dearer for buyers in other currencies and tends to weigh on the price, while lower real interest rates cut the cost of holding inventory and encourage funds to hold long positions. Managed-money positioning on COMEX and the LME can amplify moves in either direction, and a short squeeze in New York in May 2024 pulled physical metal across the Atlantic to close an unusual gap between the two exchanges.

A large share of copper use is met from recycled metal, and scrap flows respond quickly to price. When cathode is expensive, scrap dealers release inventory and fabricators use more secondary metal, which caps rallies. When prices fall, scrap is held back. At sustained high prices manufacturers also substitute aluminum in power cables, heat exchangers and some wiring, a slow but permanent loss of demand that the copper industry watches closely.

Tariffs change where copper is worth the most, not how much exists. When the United States announced a 50% duty on semi-finished copper products in July 2025, cathode was excluded, but the expectation of tariffs had already pulled metal into US warehouses and widened the COMEX premium over the LME. Export restrictions on concentrate in producing countries, and Chinese rules on scrap imports, have similar effects on regional premiums and on where smelters get built.

Most copper comes from open-pit mines because porphyry ore bodies are large and close to the surface; the deep, high-grade deposits of the Copperbelt and the block caves at Grasberg and El Teniente are mined underground. Ore is crushed and ground to a fine powder and then separated by froth flotation, in which chemicals make copper sulfide particles stick to air bubbles while waste rock sinks. The product is a concentrate holding about 25% to 35% copper, which is dried and shipped in bulk. The remaining ground rock, called tailings, is stored in engineered dams that are among the largest structures in mining.

Sulfide concentrate goes to a smelter, where it is melted with oxygen and flux in a flash furnace to produce matte and then blister copper of roughly 98% to 99% purity, with sulfur captured as sulfuric acid. Blister is cast into anodes and refined electrolytically: anodes dissolve in an acid bath and pure copper plates onto cathode sheets, leaving gold, silver and other metals behind in anode slimes that are refined separately. The product is grade A cathode, the form the LME accepts for delivery.

Oxide ore, common in the upper parts of deposits in Chile and the Copperbelt, skips smelting. It is stacked on lined pads and sprinkled with dilute sulfuric acid, a heap leach; the copper-bearing solution is concentrated by solvent extraction and then plated directly as cathode by electrowinning, a route known as SX-EW. It produces the same cathode without a smelter, which is why some mine countries export cathode rather than concentrate. Cathode is then melted and cast into rod, billet and cake for wire drawing, tube and rolling mills.

Copper's value lies in conducting electricity and heat, resisting corrosion and being easy to draw into wire. The International Copper Study Group (ICSG) reports that equipment, including motors, transformers and electronics, and building construction are the two largest end-use sectors, each taking roughly a third of refined copper, with infrastructure such as power grids, transport including vehicles and railways, and industrial machinery making up the rest (ICSG, Copper Factbook). About three quarters of copper use is in electrical applications of some kind.

Nearly all of it is used as metal rather than as a chemical, and copper can be recycled repeatedly without losing conductivity. Alloys matter too: brass (copper and zinc) for fittings and ammunition, bronze (copper and tin) for bearings and marine hardware, and copper-nickel for coins and ship pipework. Copper sulfate is used as a fungicide and in mineral supplements, a small share of demand.

Mining is spread across the Americas, Africa and Asia, but smelting and refining are concentrated. {{prod.Refinery production.top1.name}} produced {{prod.Refinery production.top1.share}} of the world's refined copper in 2025 (USGS MCS), most of it from imported concentrate, so the concentrate trade runs in one direction, from the Andes and Africa toward East Asian ports. Chile and Japan are the other large refiners, Chile from its own ore and Japan from imported concentrate. Newer smelters in DR Congo, Zambia, India and Indonesia are intended to keep more of the value at home, and Indonesia has required Grasberg concentrate to be smelted domestically.

Concentrate leaves Chile through Antofagasta, Mejillones and the mine-owned port at Coloso, and leaves Peru through Callao and Matarani. Copperbelt output travels by road and rail through Dar es Salaam, Durban, Walvis Bay and Beira, or west along the Lobito corridor to Angola, and those inland routes are the most fragile links in the chain. Cathode from Chile and Africa flows to Shanghai's bonded zone, to Rotterdam and to New Orleans, and the LME's warehouse network holds the stocks that settle the futures contract.

Single points of failure are mines rather than ports. Escondida in Chile is the largest mine, Grasberg in Indonesia the largest underground operation, and Kamoa-Kakula in DR Congo the fastest-growing; a strike, a geotechnical accident or a legal dispute at any of them shows up in the price within days. The closure of Cobre Panamá in November 2023 after a Supreme Court ruling removed a mine that had opened only four years earlier, and Chile's dependence on desalinated water and imported power leaves its mines exposed to drought and energy prices.