Where does iron ore come from?

Iron ore is rock rich enough in iron oxides to be worth mining, crushing and shipping to a steelworks. Production on this page means usable ore, the tonnage that leaves the mine after crushing and screening, unless iron content is named. In 2025 Australia mined 980 million tonnes, 38% of the world's 2.5 billion tonnes of usable ore (USGS MCS). Brazil and India followed, and the top five countries produced 82% of the total across 17 mining countries. World output changed not available for a ten-year span in this source over the ten years to 2025.

Tonnes of ore and tonnes of iron are different things. Australian and Brazilian hematite ores run above 60% iron, while much Chinese ore is low-grade magnetite that needs heavy processing, so China ranks higher by usable ore than by contained metal. Measured by iron content, the largest producer in 2025 was {{prod.Mine production: Iron content.top1.name}}, out of a world total of {{prod.Mine production: Iron content.world}} of contained iron (USGS MCS).

The deposits are old. Most of the ore mined today comes from banded iron formations, layered sediments of iron oxide and silica that settled on the floors of shallow seas between about 2.5 and 1.8 billion years ago, when oxygen produced by early life first combined with dissolved iron. Those seas lay on the ancient continental cores, the cratons, that survive as the Pilbara and Yilgarn blocks of Western Australia, the Amazonian and São Francisco cratons of Brazil, the West African craton under Guinea and Liberia, and the shields of India, Ukraine, Russia and Canada. Later weathering enriched some of these formations into the high-grade hematite that can be shipped with little processing.

Reserves of crude ore stood at 193 billion tonnes in 2025, with Australia holding 31% and Russia and Brazil next (USGS MCS). Reserves measure what could be mined at a profit under conditions at the time of the estimate; because iron is common in the earth's crust, the constraint is grade, location and rail access rather than the amount of iron that exists.

Iron ore is the largest dry-bulk cargo at sea, and the trade is unusually one-directional. Two exporters and one importer dominate. In 2024 Australia shipped 55% of the world's $159.7 billion of iron ore exports (HS 2601), with Brazil second (CEPII BACI). China bought 71% of world imports, and the next importers, Japan and South Korea, are far smaller. Because steel is made where it is used, exporters are mine countries and importers are steel countries, with very little re-export.

Ore is traded in three forms. Fines, which are particles smaller than about 6 mm, are the largest volume and must be sintered into lumps before they enter a blast furnace. Lump ore can be charged directly and earns a premium. Pellets are fines rolled into balls and fired, and high-grade pellets are the feed for direct reduced iron plants that run on gas rather than coke. Concentrates from magnetite ores are a fourth form, sold to pellet plants. Contracts specify iron content, silica, alumina, phosphorus and moisture, and every shipment is priced by adjusting an index for these qualities.

Iron ore has no exchange-traded physical benchmark in the way copper has the LME. Until 2010, prices were set once a year in negotiations between the largest miners and Japanese and Chinese steelmakers. That system ended in the second quarter of 2010, when the big three producers moved to quarterly and then monthly pricing tied to spot indices. The reference today is a daily assessment of 62% iron fines delivered to a northern Chinese port, published by price reporting agencies such as Platts and Fastmarkets, quoted in US dollars per dry metric tonne. Higher-grade 65% Fe and lower-grade 58% Fe indices trade at premiums and discounts that widen when steel margins are high, because richer ore lets a blast furnace make more steel with less coke.

Derivatives settle against these indices. The SGX Iron Ore CFR China (62% Fe) contract (ticker FEF) trades 100 t lots in US$/dmt and is cash settled, with no physical delivery. The Dalian Commodity Exchange Iron Ore contract (ticker I) trades 100 t lots in CNY/t and can be physically delivered in China, and its volume is the largest of any iron ore derivative. The two markets move together, and the Dalian night session often sets the tone for the next day's index.

The series on this page is 62% Fe fines, CFR China spot, quoted in $/dmtu, a dry metric tonne unit being one percent of iron in a tonne of ore. In August 2026 it averaged $96.3/dmtu, down 3% from a year earlier (World Bank Pink Sheet). The nominal high was $214.4/dmtu in June 2021; in inflation-adjusted terms the record was $290.3/dmtu in November 2007. The lowest monthly average since the series began in 1960 was $8.8/dmtu in January 1968.

China makes more than half of the world's crude steel and imports most of the ore it uses, so its steel production is the single largest driver of the iron ore price. Steel demand comes from housing, infrastructure, machinery and exports of manufactured goods. When property starts fall, mills cut output and ore stocks build at ports; when Beijing orders production cuts for air quality or to limit total steel output, the same happens from the supply side of steel. Port inventories in China are watched as a daily gauge of this balance.

Rio Tinto, BHP, Vale and Fortescue ship the bulk of seaborne ore, and their quarterly production reports and annual guidance move the market. Their costs are low, well below the price in most years, so they keep producing through downturns and the burden of adjustment falls on high-cost Chinese and other domestic mines. New capacity from these companies or from Simandou in Guinea adds supply in steps that take years to plan and months to ramp up.

The Pilbara export ports close for tropical cyclones between December and April, and Brazil's wet season disrupts rail and mine operations in the first quarter, which is why first-quarter shipments are usually the lowest of the year. Tailings dam failures at Samarco in 2015 and Brumadinho in 2019 removed tens of millions of tonnes of Brazilian supply for years and forced Vale to decommission other dams, one of the largest supply shocks the market has seen.

Mills choose the grade of ore that maximizes profit. When steel prices are high relative to coke and ore, mills pay up for high-grade ore and lump to raise furnace productivity and cut coke use, and the 65% Fe premium widens. When margins are thin, mills blend in cheaper low-grade fines and the discount for 58% Fe narrows. Environmental rules that limit sintering also favor lump and pellets, shifting demand among products even when total ore demand is unchanged.

The index price is delivered to China, so ocean freight is part of it. Brazil to China is roughly three times the distance of Australia to China, and when Capesize rates rise the netback to Brazilian miners falls more than to Australian ones. Fuel costs, port congestion and the number of new ships all feed into freight, which can swing the delivered price by several dollars a tonne without any change at the mine.

Steel made from scrap in electric arc furnaces uses no iron ore. As China's scrap pool grows with its stock of old cars and buildings, and as steelmakers outside China build electric furnaces to cut emissions, the share of steel that needs ore declines. Direct reduced iron plants, which use gas or hydrogen instead of coke, need high-grade pellets, which supports demand for premium ore even as demand for standard fines softens.

Governments intervene in this trade more than in most. China has used state buying through the China Mineral Resources Group to consolidate purchasing, has set steel output caps and has adjusted export rebates for steel products. India has raised and cut export duties on ore to protect its own mills. Guinea's approval and terms for Simandou, and Australia's royalty settings, shape long-term supply. Each measure moves the balance between exporters and importers rather than the total amount of ore in the ground.

Almost all iron ore is mined in open pits. Overburden is stripped, ore is drilled and blasted, and giant trucks or conveyors carry it to a crushing plant. For high-grade hematite in the Pilbara and Carajás, processing is simple: crushing and screening separate lump from fines, and some ores are washed to remove clay. Because these mines sell tens of millions of tonnes a year at low margins per tonne, the economics depend on the scale of the pit, the length of the rail line and the depth of the port more than on the ore itself.

Lower-grade ores need beneficiation. Magnetite ore is ground finely and separated with magnets to produce a concentrate of 65% iron or more; hematite fines can be upgraded by gravity and flotation. Beneficiation uses large amounts of energy and water and produces tailings that must be stored, which is why the two dam failures in Brazil were at operations that processed lower-grade ore. Concentrates are too fine to charge into a furnace and are turned into pellets, balls of about 10 to 15 mm bound with bentonite and hardened by firing.

At the steelworks, fines are sintered, heated with coke breeze and limestone into a porous cake, and then charged with lump, pellets and coke into a blast furnace, where carbon monoxide strips the oxygen from the iron oxides to produce liquid pig iron. About 1.6 t of ore is needed for each tonne of pig iron from a typical blast furnace. The alternative route, direct reduction, removes the oxygen with natural gas or hydrogen at lower temperatures to produce solid sponge iron, which is melted in an electric arc furnace; it needs pellets above roughly 67% iron, a small but growing part of the ore market.

Iron ore has one use: making iron and steel. The World Steel Association reports that about 98% of mined iron ore goes into steel, and the remainder is used in cement, pigments, coal washing and ballast (World Steel Association). Steel demand is therefore the demand for ore, and construction takes the largest share of finished steel, roughly half of global use, followed by machinery, automotive and metal products (World Steel Association, steel statistical yearbook).

Because steel is endlessly recyclable, the world's stock of steel in buildings, vehicles and infrastructure is a future source of iron that competes with ore. Regions with a mature steel stock, such as North America and Europe, already make much of their steel from scrap; regions still building, such as India and Southeast Asia, rely on ore.

The seaborne iron ore chain is built around a few very large mine-rail-port systems. In Western Australia, Rio Tinto, BHP, Fortescue and Roy Hill each run their own railways from Pilbara mines to Port Hedland, Dampier and Cape Lambert, and Port Hedland alone handles more iron ore than any other port in the world. In Brazil, Vale's Northern System runs from Carajás along the Carajás Railway to Ponta da Madeira near São Luís, and its Southern and Southeastern Systems in Minas Gerais ship through Tubarão and Itaguaí. Each of these systems is a single company's asset; a rail washout, a port closure or a licensing dispute affects a large share of world supply at once.

On the buying side, China received 71% of world iron ore imports in 2024 (CEPII BACI), through ports such as Qingdao, Caofeidian, Rizhao and Tangshan that serve the steel belt of Hebei and Shandong. Japan, South Korea and Taiwan (Chinese Taipei) take most of the rest of Asian imports, and European mills in Germany, the Netherlands and France buy Brazilian, Swedish and Canadian ore through Rotterdam and Dunkirk. Ore moves in Capesize and larger Valemax vessels, and freight from Brazil is the swing cost.

The chokepoints of the next decade are new rather than old. Simandou in Guinea, whose first ore was railed to port in November 2025, adds a third major exporting country and a 600 km railway to a single new port. Vale's recovery from dam-safety restrictions, Australia's cyclone season and Chinese import policy remain the recurring risks, and the shift to higher-grade ore for lower-carbon steelmaking means the market for premium pellets, supplied mainly by Brazil, Canada and Sweden, is tighter than the market for standard fines.