Copper Reserves by Country: USGS Data Compared

Copper Reserves by Country: The Short Answer

The world held an estimated 980 million metric tons of copper reserves in the USGS Mineral Commodity Summaries 2026, with Chile alone accounting for about 180 million metric tons, Australia around 100 million metric tons, and Peru approximately 85 million metric tons — together about 37% of the global total (USGS Mineral Commodity Summaries 2026 – Copper PDF). World copper mine production was an estimated 23 million metric tons in 2025, in the 2026 summary (USGS Mineral Commodity Summaries 2026 – Copper PDF).

On rare earths, global reserves stood at more than 75 million metric tons, with China holding roughly 44 million metric tons — the largest national figure — and Brazil around 11 million metric tons, the second-largest national holding (USGS Mineral Commodity Summaries 2026 – Rare Earths PDF). Australia’s reserve base is far smaller at about 6.3 million metric tons, but it still ranks among the top mine producers. The rest of this page breaks both commodities down by country, shows where production and reserves diverge, and links directly to the source PDFs so you can pull the raw tables yourself.

Where to Get the USGS Mineral Commodity Summaries PDF (Copper & Rare Earths)

The USGS National Minerals Information Center publishes the Mineral Commodity Summaries as one bound annual report, broken into single-commodity chapters that are each downloadable as standalone PDFs. The copper chapter is posted directly by USGS at pubs.usgs.gov/periodicals/mcs2026/mcs2026-copper.pdf. It contains the salient statistics table (production, reserves, world resources, substitutes), a discussion of events and trends for the year, and the government’s own price outlook.

USGS corrects its summaries after release. The 2026 edition was first posted on 6 February 2026 and revised three times, and its USGS version history lists each change. One of them, on 27 May 2026, cut Brazil’s rare earth reserves from 21 million to 11 million metric tons. Check the version history before you copy a number from any site, including this one.

A Note on Newer Editions

USGS Mineral Commodity Summaries are released once a year, early in the year, covering the prior calendar year’s production and the reserve estimate current at time of publication. This page uses the 2026 edition, which covers 2025. The PDF addresses follow a simple pattern: the edition year appears twice, as in mcs2026/mcs2026-copper.pdf. Reserve figures are revised each year as new drilling, feasibility studies and country reports come in, so the 2025 and 2026 editions differ for several countries.

Copper Reserves by Country: Full Table

Copper reserves are far less concentrated than rare earths — no single country holds more than about a fifth of the global total, and the top five are spread across South America, Oceania, Africa and Eurasia. That geographic spread is itself a supply-security fact: a disruption in one country’s output doesn’t remove access to the metal the way it can with rare earths.

The table shows the eight largest national reserve figures. Two of them changed since the 2025 edition: Chile’s fell from 190 million to 180 million tons and Peru’s from 100 million to 85 million tons (USGS, 2025 and 2026 editions). Every other country USGS tracks is in the “World Mine and Refinery Production and Reserves” table of the copper chapter, at pubs.usgs.gov/periodicals/mcs2026/mcs2026-copper.pdf.

Australia’s 100 million tons is a USGS estimate. A footnote to the same table says that reserves meeting the JORC Code, or an equivalent standard, were 27 million tons (USGS, 2026). Geoscience Australia’s preliminary tables, as of 31 December 2025, show Ore Reserves of 18.87 million tons of copper at 29 operating mines, mine output of 0.73 million tons and a reserve life of 26 years (Geoscience Australia, 2026). The three figures use different rules, so do not mix them in one comparison.

Reserves are only part of the copper in the ground. USGS cites a global assessment from 2015: identified resources held 1.5 billion tons of unextracted copper, and undiscovered resources held an estimated 3.5 billion tons (USGS Scientific Investigations Report 2018-5160). Undiscovered copper is what exploration looks for.

Copper Mine Production: Chile, Peru, and the Rest of the World

World copper mine production reached 23 million metric tons in 2025 (an estimate), per the USGS 2026 summary (USGS Mineral Commodity Summaries 2026 – Copper PDF). Chile is the largest producer, at 5.3 million metric tons in 2025 (estimate). The Democratic Republic of the Congo (3.2 million) and Peru (2.7 million) come next. Together the three mined close to half of world output, so anyone modelling copper supply starts with them (USGS, 2026).

The copper PDF’s production table breaks output out by country for the current and prior year, alongside each country’s reserve figure on the same page — which is the single most useful thing about going to the primary source instead of a secondary aggregator. A secondary site will usually give you reserves OR production, rarely both cross-referenced on one table with the same vintage.

Why Reserves and Production Don’t Rank the Same Way

• Ore grade differs by deposit: a country can hold large contained reserves in low-grade porphyry deposits that take decades to fully mine, while a smaller reserve base of higher-grade ore gets extracted faster.
• Permitting speed varies by jurisdiction: reserves are a geological fact; production is a function of how fast a country’s permitting and infrastructure let a mine actually ramp up.
• New discoveries reclassify resources into reserves: a country’s reserve figure can jump year-over-year not because new copper appeared in the ground, but because more of an already-known deposit became economically viable to extract at current prices.

Divide each reserve figure by the same country’s 2025 output and the ranking changes. At the 2025 estimates, Chile’s reserves cover about 34 years of mining, Peru’s about 31, DR Congo’s about 25, China’s about 23 and the United States’ about 47 (USGS, 2026). Australia’s USGS figure gives about 137 years, but on Geoscience Australia’s Ore Reserve basis the reserve life is 26 years. A reserve life is a ratio, not a forecast, because reserves are revised every year.

Mining is only the first step. China mined an estimated 1.8 million tons of copper in 2025 but refined 14 million tons, about 48% of the world’s 29 million tons of refinery output (USGS, 2026). For refined copper, trade and recycling, the International Copper Study Group publishes the World Copper Factbook 2025.

US Copper Production, Value, and the COMEX Price Note

The United States produced an estimated 1.0 million metric tons of recoverable copper from domestic mines in 2025, valued at approximately $11 billion, according to USGS (USGS Mineral Commodity Summaries 2026 – Copper PDF). That valuation is USGS’s own estimate tied to the report’s 2025 price assumptions, not a market quote you can look up separately. The 2025 estimate is 5% below the 2024 figure of 1.05 million tons, which USGS valued at $10.0 billion.

The same PDF carries a COMEX copper price projection of $4.80 per pound for 2025 — a record high, 14% above the 2024 average of $4.22. It is USGS’s stated planning assumption for that year’s report, not a live quote. Copper trades on COMEX and the London Metal Exchange in real time, and the price on the day you read this will differ from that 2025 estimate. For a current quote, check COMEX or LME directly rather than any commodity summary, which is a once-a-year publication by design.

USGS links the lower 2025 output to concentrator shutdowns and lower ore grades at several mines. Arizona gave about 70% of US copper, and 17 of the 26 operating mines gave more than 99% of mine output. Net import reliance was an estimated 57% of apparent consumption in 2025, up from 45% in 2024, and refined copper imports rose from 903 thousand tons to an estimated 1.7 million tons. Scrap supplied about 30% of US copper. On 7 November 2025 the US Final 2025 List of Critical Minerals was published, and copper was added to it (USGS, 2026).

Rare Earth Reserves by Country: China, Brazil, Australia

Global rare earth reserves totaled more than 75 million metric tons in the USGS Mineral Commodity Summaries 2026 (USGS Mineral Commodity Summaries 2026 – Rare Earths PDF). Unlike copper, rare earth reserves are heavily concentrated in a small number of countries.

China, Brazil and Australia hold 61.3 million metric tons between them (USGS, 2026). USGS gives the world total only as a lower bound, because it has no reserve figure for Burma, India, Madagascar, Nigeria or Thailand. Russia holds 3.8 million metric tons and Vietnam 3.5 million.

Rare Earth Mine Production by Country

Global rare earth mine production reached an estimated 390,000 metric tons, with China producing about 270,000 metric tons — roughly 69% of world output — the United States around 51,000 metric tons, and Australia about 29,000 metric tons (USGS Mineral Commodity Summaries 2026 – Rare Earths PDF, 2025 estimates). This is the figure that matters most for near-term supply security, since it reflects what was actually extracted in 2025 rather than what sits underground.

Compare that production split against the reserve table above and the mismatch is immediate: China holds the largest reserves (44 million metric tons) and produced about 69% of the world’s rare earths in 2025, while Brazil holds the second-largest reserve base (11 million metric tons) but mined only about 2,000 metric tons, around 0.5% of world output (USGS, 2026). That gap between where the material sits and where it’s actually being mined is the single most important fact for anyone assessing rare earth supply risk — a large reserve base with no mining capacity built around it does nothing for near-term supply.

China’s export controls shape the rare earth trade. In April 2025 China added controls on samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium. In October it widened them to five more elements, and in November it suspended the October step for one year. The April controls stayed in place. In the United States, bastnaesite from the Mountain Pass mine in California is the main source of mined rare earths, yet net import reliance for compounds and metals was an estimated 67% in 2025 (USGS, 2026).

Reserves vs. Production: Why the Two Tables Disagree

Every USGS commodity chapter carries two distinct kinds of numbers, and conflating them is the most common misreading of this data:

• Reserves are the portion of a known deposit that is economically extractable under current prices and technology — a geological and economic estimate, not a prediction of what will be mined.
• Mine production is what was actually extracted in the reporting year — a hard, backward-looking output figure.

A country with enormous reserves but limited mining infrastructure, permitting capacity, or processing facilities can still be a minor producer. Brazil’s rare earth position is the clearest example in this dataset: an 11-million-metric-ton reserve base, second only to China, alongside 2025 production of about 2,000 metric tons, too small to register among the leading producers in the USGS table. Conversely, a country can be a leading producer while working through a comparatively modest reserve base, which raises questions about how many years its current production rate can be sustained — the subject of the calculator below.

Reading the USGS PDF Tables Correctly

1. Locate “Reserves” in the right-hand column of the world production and reserves table — this is the stock figure.
2. Locate “Mine production” in the same table, usually listed for the current and prior year — this is the flow figure.
3. Never divide one country’s production by another country’s reserves; keep every ratio within the same country’s own two numbers.
4. Check the report’s publication date against the calendar year the production figures cover — USGS commodity summaries published in a given year report production data for the prior calendar year, not the publication year itself.

Reserve-Life Calculator

Divide a country’s reserve figure by its annual production to estimate how many years of mining remain at the current extraction rate — plug in any country’s numbers from the tables above, or your own updated figures once you’ve checked the current USGS PDF.

Assumptions: treats reserves as a fixed stock consumed at the entered production rate; does not account for new discoveries, reserve reclassification, ore-grade decline, or price-driven changes to what counts as economically extractable. Default values are Chile’s USGS reserves and 2025 mine output (2026 edition), used only as an example. Replace them with figures from the latest USGS PDF before relying on the result for any real decision. The price is an example, so enter today’s price.

Satellite-Based Mineral Detection: Finding the Next Deposit

Reserve figures only capture deposits that have already been drilled, delineated, and classified as economically viable. Everything upstream of that — the search for new, undiscovered mineralization — is where Farmonaut’s satellite-based mineral detection operates, using multispectral and hyperspectral imagery to flag mineral spectral signatures across large areas before any ground crew is mobilized.

How It Works

• Remote spectral analysis: satellite imagery is screened for the reflectance signatures associated with alteration halos and mineralized zones, narrowing a large search area down to specific targets.
• Early-stage prospect validation: flagged zones are cross-checked against structural and geological features before any recommendation to drill.
• Analytical reporting: findings are delivered as maps, prospectivity heatmaps, and geological interpretation, formatted as a PDF report.

Explore the satellite-based mineral detection platform for the full methodology, or view a worked example: Farmonaut’s Satellite-Driven 3D Mineral Prospectivity Mapping combines surface and subsurface intelligence for deposit targeting — view a sample report here.

For copper or rare earth exploration specifically — where reserve concentration in a handful of countries makes new, geographically diversified discoveries strategically valuable — contact the technical team or submit a project query to scope a satellite assessment for your area of interest.

Related reading on this site: Lynas Rare Earths: Output, Plants and Prices in Charts.

Frequently Asked Questions

Conclusion & Next Steps

Copper reserves are geographically spread — Chile, Australia, Peru, and several other countries each hold meaningful shares of an estimated 980 million metric ton global total (USGS, 2026) — while rare earth reserves are concentrated, with China and Brazil together holding 55 million of the world’s more than 75 million metric tons. Production tells a different story from reserves in both cases, and conflating the two tables is the most common error in reading this data. For copper specifically, our companion page has the fuller country-level breakdown: Copper Reserves by Country: Global Impact Summary.

• Pull the current-year figures directly from USGS before making any investment, procurement, or policy decision — this article’s numbers carry the vintage USGS assigned them and will be superseded by the next annual release.
• Keep reserves and production as separate questions; a country’s rank in one table says nothing about its rank in the other.
• Use the reserve-life calculator above with updated figures to sanity-check how long a given country’s current output can be sustained at its present reserve base.
• For exploration beyond what’s already been classified as a reserve, Farmonaut’s satellite-based mineral detection platform screens new ground before committing to a field program.