Where does tantalum come from?

Two of the three countries USGS names as sources of US tantalum ore mine very little of it. USGS lists Australia as the source of 64% of US tantalum ore and concentrate imports in 2021 to 2024 and Mozambique as 10%, yet in 2025 Australia mined 50 tonnes (2.0% of world output) and Mozambique 1 tonne. The third named source, DR Congo at 9%, is the exception: it mined 1,300 tonnes, 52% of the world total (USGS MCS; shares computed). The import years and the output year differ, so this compares two USGS tables and does not show what any one shipment contained.

The countries with a published reserves figure are not the ones doing most of the mining. USGS gives 2025 reserves for China, Australia, Brazil and Russia, and these four mined 350 tonnes together, 14% of the 2,500 tonnes world output (our arithmetic on USGS MCS). DR Congo, Rwanda and Nigeria produced 84% of 2025 output, and USGS prints no reserves figure for any of them. The data therefore cannot say how long the leading producers' deposits would last, and no reserves-to-output ratio is computed for them.

US demand for tantalum is large, and the country mines none. USGS's salient statistics table puts US apparent consumption at 890 tonnes in 2025, equal to 36% of the 2,500 tonnes mined worldwide (our arithmetic on USGS MCS), and net import reliance at 100% in every year from 2021 to 2025 (USGS MCS). The two measures differ in scope, since apparent consumption is built from imports, exports and any domestic production and the world figure counts mine output only, so the 36% shows scale, not a share of supply.

In 2025 DR Congo (Democratic Republic of the Congo) was the largest producer of tantalum, with 1,300 tonnes of tantalum content, 52% of the 2,500 tonnes world total (USGS MCS). Rwanda followed with 16% and Nigeria with 16%; the two are close, at 400 tonnes and 390 tonnes. Those three countries account for 84% of the total. Brazil (7.6%) and China (3.2%) come next, and 11 countries are recorded in all.

USGS describes the ore as follows. It says tantalum comes mostly from tantalite, an accessory mineral in rare-metal granites and in pegmatites enriched in lithium and caesium, and that niobium and tantalum are almost always found together. Its 2017 review adds that artisanal mining of columbite-tantalite, called coltan, is practised in many countries, particularly Burundi, DR Congo, Nigeria, Rwanda and Uganda. Some tantalum is also a by-product of tin mining, as in Malaysia and Thailand, according to Los Alamos National Laboratory.

Four cautions apply. USGS marks the 2025 column as estimated, and says its 2024 figure for DR Congo was revised significantly using a government report. USGS prints a rounded world total, and the listed countries add up to slightly less, so 0.6% of the total is assigned to no country. It prints the same rounded world figure for both years, so the reported change of 0% says little about what happened. And the USGS chapter gives no split between artisanal and industrial output; the 2017 review cites a consultancy estimate that in 2011 conventional mining supplied 51 percent of world tantalum supply and artisanal mining 29 percent, which is old and not a current figure.

The reserves column is thin. USGS gives 2025 reserves for only four countries: China 240,000 tonnes, Australia 120,000 tonnes, Brazil 40,000 tonnes and Russia 150 tonnes. It prints "not available" for every other producing country, including DR Congo, Rwanda and Nigeria, and for the world (the United States is shown as zero), so this page shows no world reserves total, no shares of reserves and no years of supply. The figures also do not line up with output: China has the largest listed reserves yet mined only 80 tonnes. USGS footnotes a lower figure for Australian reserves on the Joint Ore Reserves Committee basis. It says identified world resources, mostly in Australia, Brazil, Canada and China, are considered adequate to supply projected needs.

This page has no trade table, because customs data cannot isolate tantalum. Tantalum ores and concentrates have no heading of their own in the international customs nomenclature. They fall under HS 261590, the "other" subheading of heading 2615, whose description covers niobium, tantalum or vanadium ores and concentrates (a Japanese customs-statistics reference gives this wording). Any figure for that code mixes the ores of three metals, so this site does not show one.

The ore code is also only one of the forms in which tantalum crosses borders. The USGS tariff table lists separate lines for synthetic concentrates, ores, oxide, potassium fluorotantalate, powder, alloys and metal, scrap and wrought products, across several chapters of the tariff. Only the first six digits of the Harmonised System are standardised internationally (European Commission); countries add their own, and the USGS table shows the US schedule separating niobium ore from tantalum ore at ten digits. Cross-country comparisons cannot rely on that detail.

USGS deals with the problem by estimating: its imports and exports are expressed as tantalum content, combining several product lines using assumed oxide contents, and it assumes niobium ores contain some tantalum. It reports net import reliance of 100 percent for the United States in each year from 2021 to 2025 and says tantalum has not been mined there since 1959. For 2021 to 2024 it lists the sources of US ore and concentrate imports as Australia (64 percent), Mozambique (10 percent) and Congo (Kinshasa) (9 percent). Those are US figures only and say nothing about world flows.

This page shows no tantalum price series, because this site has no free public series and does not use an exchange benchmark for it. Fastmarkets, a price reporting agency, said in August 2023 that tantalite is sold on spot and long-term contract bases, and its assessments are specific: tantalite of a minimum 25 percent Ta2O5 grade, cif China (as described in an August 2023 article), and, launched in August 2026, tantalum of 99.8 to 99.9 percent purity, cif US and Europe, which it says serves the superalloy market.

The price in the ore is quoted per unit of tantalum oxide (Ta2O5), not per unit of metal; USGS notes that Ta2O5 is 81.897 percent tantalum. The two should not be compared directly.

USGS gives an estimated 2025 annual average price for tantalite of $180 per kilogram of Ta2O5 content, and says the average monthly price of tantalum ore as of November 2025 was the same. Its series draws on different sources in different years (CRU Group for 2021, the Institute for Rare Earths and Metals for 2022 to 2024, Asian Metal for 2025), so read changes between years with care. These are 2025 USGS figures, not a current price. Naming a company on this page is not investment advice.

USGS's 2017 review says capacitors are the leading end use of tantalum because the metal stores and releases energy in a very small component, and that no effective substitute had been found for tantalum in electronic devices without loss in performance. The current USGS summary lists aluminum, ceramics and niobium as possible substitutes, at a cost in performance or money.

Tantalum is one of the four minerals covered by the EU regulation, and the US law covers it through coltan. Companies in scope have to document where their tantalum, tin, tungsten and gold came from, so traceability from the mine is part of what a supplier sells.

USGS reports that the US Department of State said the governments of Congo (Kinshasa) and Rwanda signed a peace agreement in June 2025, mediated by the United States and observed by Qatar; USGS says that, if sustained, it was expected to improve stability in eastern Congo (Kinshasa) and strengthen conditions for regional mineral trade including tantalum. This page makes no prediction about it.

Part of the supply is a by-product. USGS says some tantalum demand is met by production as a by-product of tin mining and metallurgy, and its 2017 review says the Greenbushes pegmatite in Western Australia has been mined for tin and tantalum and later for kaolin and lithium. A Fastmarkets analyst said in August 2023 that feasibility studies for two lithium-tantalum projects, Kathleen Valley in Australia and Rose in Canada, indicated a potential additional 200 tonnes a year of tantalite; these are projections, not production.

USGS says tantalum is recycled mostly from new scrap generated in making tantalum-containing electronic components and from cemented carbide and superalloy scrap, and that recycling may account for as much as 30 percent of consumption by US primary processors.

USGS reports that in September 2025 the US Defense Logistics Agency awarded a delivery order of $8.6 million for tantalum ingots for the National Defense Stockpile, and a separate five-year contract for as much as $100 million, to an unnamed company processing tantalum in Boyertown, Pennsylvania. Global Advanced Metals announced a five-year contract of up to $100 million for ingots from its Boyertown plant on 30 September 2025.

Tantalum is mined from open-pit and underground workings, or, in central Africa, taken from weathered pegmatites and placer deposits by artisanal miners. According to the USGS 2017 review, heavy minerals containing tantalum are separated from the ore by gravity methods and flotation, then by electrostatic or electromagnetic separation, to give a concentrate. It said, citing a 2010 industry source that is not a current split, that about half of tantalum production came from tantalite ore and the rest from tin slag, other minerals, recycling and synthetic concentrates.

Because most tantalum minerals also contain niobium, the two must be separated chemically. USGS says a step using potassium fluoride separates niobium from tantalum, giving compounds including tantalum oxide and a potassium tantalum fluoride, and that the tantalum compounds are then smelted to make tantalum metal products. USGS says ingots are made for superalloys and for metal powders for high-reliability electronic components.

A list on the US government's trade.gov site, dated October 2022, names facilities known to be able to process tantalum concentrate and the forms they make: oxide, potassium fluorotantalate, powder, metal, carbides, and ferro-tantalum and ferro-niobium-tantalum alloys. It has entries in more than a dozen countries, with China having by far the most.This page gives no processing shares, because no source gives them.

USGS publishes no current world split of tantalum by end use, but its 2017 review, citing industry publications from 2010 and 2011 with no data year stated, gives one: the electronics industry accounts for about half of tantalum consumption (a 2010 source), and by product (a 2011 source) capacitor-grade powder was 24 percent, mill products 22 percent and chemicals 18 percent, with the rest metallurgical-grade powder, unwrought metal and scrap, ingot and tantalum carbide. These are old figures.

Capacitors come first. USGS says tantalum capacitors suit space-sensitive uses such as mobile phones, hard drives and implanted devices such as hearing aids and pacemakers.

Other uses follow from the metal's properties: Los Alamos National Laboratory describes a very hard metal that melts at 3,290 kelvin (3,017 degrees Celsius) and lists medical implants, rocket nozzles and nuclear reactors. USGS adds corrosion-resistant linings in the chemical industry, coatings for stents and bone replacements, tantalum oxide for lens glass, tantalum carbide for cutting tools, and superalloys for aerospace and energy generation. It lists substitutes for most of these uses, each with possible performance loss or higher cost.

The chain runs from mine or tin smelter, through a concentrator, to a chemical plant that separates tantalum from niobium, then to producers of powder, metal and ingot, and finally to makers of capacitors, alloys and chemicals. An important part of the first link is artisanal mining in central Africa, and companies further along must be able to show where the material came from. See niobium, found with tantalum in the same minerals, tin and tungsten, the other metals in the conflict-minerals rules.

Section 1502 of the US Dodd-Frank Act, approved on 21 July 2010, requires companies that report to the Securities and Exchange Commission and use certain minerals to disclose annually whether they originated in the Democratic Republic of the Congo or an adjoining country. The Act defines a conflict mineral as columbite-tantalite (coltan), cassiterite, gold, wolframite or their derivatives, or any other mineral the Secretary of State determines is financing conflict in the Democratic Republic of the Congo or an adjoining country. The Act directs the SEC to make the rules, and this page describes the statute as enacted, without a view on its current status. Regulation (EU) 2017/821 of 17 May 2017 sets up a Union system of supply-chain due diligence to curtail opportunities for armed groups and security forces to trade in tin, tantalum and tungsten, their ores, and gold. The European Commission says its requirements for EU importers apply from 1 January 2021 and that it requires importers to follow the OECD's due diligence guidance, which the International Tin Association says was developed in 2010 and updated in 2016. A traceability scheme was launched for the Congo region in 2011, the Tin Supply Chain Initiative, according to USGS.

Tantalum is on the US list of critical minerals: the Interior Department announced the final 2025 list on 6 November 2025 (Federal Register notice 7 November 2025) and tantalum is included. The European Commission lists tantalum among its 34 critical raw materials on its critical raw materials page, so it is a critical mineral in both; the glossary entry defines the term. USGS says US domestic resources are low grade and mostly not commercially recoverable. For the difference between where a metal is mined and where it is processed, see producing, exporting and processing.