The global artificial intelligence race is usually described in terms of chips, data centres, electricity and computing power. But beneath the servers and semiconductor systems sits another layer of infrastructure that is attracting far less attention: critical minerals.
Among them is tantalum; a relatively obscure metal whose importance to advanced electronics gives Nigeria an unexpected position in the emerging AI supply chain.
An information gathering study, drawing on 2025 production estimates from the U.S. Geological Survey (USGS) and the World Bank’s World Development Report 2026, identifies tantalum alongside gallium and rare earths as among the minerals whose concentrated global production could become strategically important to AI hardware supply chains.
The geography of tantalum is particularly significant for Africa.
The Democratic Republic of Congo accounts for an estimated 52% of global tantalum mine production, followed by Rwanda at 16% and Nigeria at 15.6%. Together, the three countries account for approximately 83.6% of global production in the dataset.
That puts Nigeria in a position that extends well beyond its traditional mining profile. The country is not merely a potential future participant in the critical-minerals economy. It is already producing one of the materials embedded in the hardware supporting the next generation of computing.
The question is whether Nigeria can convert that production into a larger share of the value created by the global technology economy.
The Mineral Behind the Machine
Tantalum does not attract the same public attention as lithium, copper or rare earth elements. Its importance is nevertheless highly specialised.
Tantalum is used in electronic capacitors and other high-reliability components because of its electrical characteristics, allowing manufacturers to achieve high capacitance in relatively compact components with stable performance.
That makes it relevant to demanding electronics systems, including the power-management and circuitry infrastructure used in advanced computing. An article on Visual Capitalist highlights tantalum’s role in AI server power-management systems, particularly through tantalum capacitors.
The connection illustrates an important characteristic of the AI minerals economy. AI does not depend on a single mineral; it requires an ecosystem of materials.
Gallium supports high-performance semiconductor and power-electronics applications. Rare earth elements support powerful magnets and other components. Tantalum supports specialised electronic systems. Copper, aluminium, tin, silver and other materials are also incorporated into the wider infrastructure of servers, networks and data centres.
The AI economy is therefore also a minerals economy. And the countries controlling the supply of those materials are becoming increasingly relevant to technology supply-chain strategy.
Nigeria Is Already a Major Tantalum Producer
The Nigerian position deserves closer attention.
According to the USGS, Nigeria was the world’s second-ranked tantalum producer in 2024, accounting for an estimated 16% of global production. USGS estimated Nigerian columbite-tantalite production at about 1,900 tonnes in 2024, compared with 1,871 tonnes in 2023.
The 2026 USGS Mineral Commodity Summaries estimates Nigeria’s 2025 tantalum mine production at 390 tonnes of contained tantalum, compared with 1,300 tonnes for the Democratic Republic of Congo and 400 tonnes for Rwanda.
These figures need to be interpreted carefully because tantalum statistics can be reported at different stages of the mineral chain; such as ore/concentrate, tantalum content or Ta₂O₅ equivalent.
But the underlying message is clear: Nigeria is already part of the global tantalum supply chain at meaningful scale. That changes the strategic question. It is no longer simply whether Nigeria can discover critical minerals. It is whether Nigeria can build the industrial capabilities required to capture more value from minerals it is already producing.
The AI Supply Chain Is an Opportunity; but Not Yet an Industrial Strategy
The temptation would be to look at Nigeria’s tantalum production and conclude that the country has automatically secured a position in the AI economy.
It has not. Producing a critical mineral is only the first link in a much longer chain.
Between a tantalum-bearing deposit and an AI server are multiple stages involving mining, concentration, chemical processing, refining, powder production, component manufacturing, electronics assembly and ultimately integration into sophisticated technology systems.
The higher-value stages require specialised technology, capital, quality assurance, engineering expertise and access to global markets. This is precisely where Africa’s broader beneficiation challenge intersects with the AI economy.
The continent can possess strategic minerals without controlling the strategic value chain built around them.
From Columbite-Tantalite to Strategic Material
Nigeria’s tantalum production is closely associated with columbite-tantalite, often referred to in the trade as coltan. USGS estimates Nigeria produced approximately 1,900 tonnes of columbite-tantalite in 2024. It also notes that Nigerian critical-mineral production involves both artisanal and small-scale mining and private companies.
That production structure creates both opportunity and risk. On one side, artisanal and small-scale mining can provide livelihoods and rapidly mobilise production. On the other, fragmented production can make geological control, traceability, environmental management, taxation and responsible sourcing more difficult.
This matters particularly for tantalum because its international trade has long been associated with concerns around conflict minerals and supply-chain due diligence.
The USGS has historically classified tantalum as a conflict mineral under U.S. law because of concerns surrounding supply chains originating in the Democratic Republic of Congo and neighbouring states. Tantalum is also monitored as a strategically important material because supply disruptions can affect important electronic and defence applications.
For Nigeria, this creates an opportunity. A transparent, traceable and responsibly produced Nigerian tantalum supply chain could become a strategic differentiator as technology companies and governments seek to diversify critical-mineral sourcing.
The Geopolitics of a Small Metal
Tantalum also demonstrates why critical minerals are increasingly viewed through a geopolitical rather than purely commercial lens. Global production is concentrated.
According to the latest USGS estimates, the DRC, Rwanda and Nigeria together account for more than four-fifths of global tantalum mine production. At the other end of the chain, advanced technology manufacturing is concentrated in a different set of economies.
This creates a geographic mismatch: The minerals are often produced in one part of the world, while the highest-value processing and technology manufacturing occur elsewhere.
The strategic competition emerging around critical minerals is partly an effort by major economies to reduce the vulnerability created by this mismatch. The United States, for example, remains completely import-dependent for tantalum used in semiconductor production.
That does not mean Nigeria should attempt to replicate semiconductor manufacturing overnight. It does mean that Nigerian tantalum can be considered within a much broader conversation about secure and diversified technology supply chains.
Nigeria’s Opportunity Is Bigger Than Mining
This is where Nigeria’s current critical-minerals agenda becomes relevant. The Federal Government of Nigeria has been pursuing a policy framework aimed at moving critical minerals from exploration towards processing and utilisation, including geological data, infrastructure, human capital, governance and value-added products.
In 2026, Nigeria and the African Development Bank also called for stronger African control of mineral value chains, with emphasis on geological data, regional collaboration and strategic financing.
And in September 2026, Nigeria and the United States signed a mineral investment framework covering geological data and exploration, mineral development and processing, infrastructure and technical capacity. The agreement is intended to provide a framework for business-to-business investment and value-added mineral development.
Taken together, these developments create a potentially important policy window for tantalum.
The opportunity is to move from: resource → ore → export
towards: resource → responsible mining → concentration → processing → refined material → advanced components → technology supply chain.
Nigeria is unlikely to capture every stage, and it does not need to. The strategic objective should be to identify the stages where Nigeria can become competitive, scalable and internationally trusted.
The Processing Question
The critical issue is therefore not simply how much tantalum Nigeria produces. It is what form of tantalum leaves Nigeria. That distinction determines where much of the economic value is captured.
Nigeria’s mining sector has already begun attracting investment into mineral processing in other critical-mineral categories. A major lithium-processing facility was commissioned in Nasarawa in 2024, while other projects across the country are being developed around lithium and other critical materials, including the Asba and Wisdom Lithium plant located in Abuja.
The government has also highlighted a broader pipeline of processing projects as part of its local-value-addition strategy.
The tantalum opportunity should therefore be considered within this emerging processing ecosystem. Rather than developing tantalum as a standalone commodity, Nigeria could potentially integrate it with the broader tin–tantalum–niobium–lithium pegmatite economy.
This is particularly relevant because tantalum and lithium can occur together in lithium-cesium-tantalum pegmatite systems. USGS notes that Nigeria’s lithium resources occur in such pegmatite environments, particularly across states including Nasarawa, Kaduna, Oyo and Kogi.
That geological relationship creates an interesting industrial proposition. The same exploration ecosystem can potentially generate multiple strategic minerals.
The challenge is building the processing and geological intelligence systems capable of recognising and commercially developing that mineral complexity.
The Data Advantage
One of the least discussed components of Nigeria’s critical-minerals opportunity is geological data. Investors cannot build mines or processing facilities around geological headlines. They need reliable information on resource size, grade, mineralogy, accessibility, infrastructure, ownership and development conditions.
Nigeria’s emerging partnership with the United States explicitly includes geological data and exploration, while the broader African minerals agenda is increasingly calling for greater African control over geological intelligence.
For tantalum, better geological data could help answer several commercially important questions:
- Where are Nigeria’s most prospective tantalum-bearing systems?
- What are the grades and recoverable quantities?
- What other minerals occur alongside tantalum?
- Which deposits can support commercial-scale operations?
- Where can processing facilities be located economically?
- What infrastructure is required to connect deposits to markets?
These are not merely geological questions. They are investment questions.
A Traceable Nigerian Tantalum Proposition
There is another opportunity that could become increasingly important: traceability. The global tantalum supply chain has a history of scrutiny because of conflict-mineral concerns.
Nigeria is not the DRC, and its tantalum supply chain should not automatically be treated as equivalent to those of conflict-affected jurisdictions. But the history of tantalum means that international buyers increasingly have an interest in knowing the origin of material and the conditions under which it was produced.
Nigeria can potentially turn that requirement into a competitive advantage. A credible Nigerian tantalum system could combine:
geological origin + licensed production + digital traceability + responsible sourcing + processing + certification.
That would allow Nigerian producers to compete not only on tonnes and price, but on supply-chain credibility. For global technology companies, this distinction could become increasingly important as governments and manufacturers seek diversified sources of critical materials.
The Regional Dimension
There is also a case for treating tantalum as a regional African value-chain opportunity. Nigeria is geographically positioned within West Africa’s broader mineral economy, while tantalum production is concentrated predominantly in Central and East Africa.
That raises the possibility of future regional arrangements around mineral processing, technology, standards and markets. Africa does not necessarily need every country to build every processing facility.
A more practical model could involve specialised regional hubs connected through infrastructure and trade arrangements.
- One country may provide geological resources.
- Another may provide processing capacity.
- Another may provide specialised engineering or manufacturing.
- Regional markets can then provide the scale required to support investment.
This aligns with the broader position advanced by African policymakers and the AfDB around regional infrastructure, value-chain development and capital mobilisation.
The objective would be an African critical-minerals ecosystem rather than a collection of disconnected national mining industries.
AFNIS Insight: Nigeria Should Treat Tantalum as an Industrial Opportunity, Not a Commodity Footnote
The most important message from the AI minerals story is not that tantalum happens to be used in servers. It is that the technology economy is creating strategic importance for materials that were previously treated as niche commodities.
Nigeria is already positioned inside one of those supply chains. USGS estimates place Nigeria among the world’s leading tantalum producers, with approximately 15–16% of global production in recent estimates. That position creates an opportunity; but only if production becomes the starting point for a deeper industrial strategy.
Nigeria’s priority should not simply be to increase tonnes extracted. It should be to increase the economic value attached to every tonne. That means better geological intelligence, formalisation of artisanal production, transparent licensing, responsible sourcing, traceability, modern processing, technical skills, infrastructure and access to long-term capital.
The country also needs to understand where it can realistically compete in the international value chain. It may not make economic sense to attempt every downstream stage domestically. But there is a significant difference between exporting an ore or concentrate and becoming a trusted producer of processed tantalum materials for global manufacturers.
That intermediate step can create new capabilities in metallurgy, chemical processing, engineering, laboratory services, certification and industrial technology.
The AI boom therefore provides Nigeria with something more valuable than a headline about another critical mineral. It provides a strategic lens through which to reconsider what Nigeria’s mineral sector is for.
If the country can connect its tantalum resources to geological intelligence, responsible production, processing, finance and international technology supply chains, a mineral that has historically occupied a relatively small place in Nigeria’s mining narrative could become part of a much larger industrial proposition.
The objective should be clear:
Nigeria should not aim merely to supply the AI economy with tantalum. It should seek to capture more of the value created because it can supply it. That is the difference between participating in a critical-minerals supply chain and building an industrial position within one.
Strategic Takeaway
Tantalum demonstrates why Africa’s critical-minerals opportunity is ultimately a value-chain question. Nigeria already possesses production significance. The next frontier is turning that geological and production advantage into processing capability, trusted supply chains, industrial skills and durable economic value.
Sources:
Visual Capitalist — Who Controls the Critical Minerals Powering AI?
USGS — Mineral Commodity Summaries 2026: Tantalum
African Development Bank — Critical Minerals, Value Chains and Industrialisation
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