REalloys and Critical Metals Corp. have announced a long-term offtake agreement tied to the Tanbreez rare earth project in southern Greenland, a deal that sharpens the commercial challenge facing African critical minerals projects.
The agreement gives REalloys access to a portion of Tanbreez’s planned Phase 1 rare earth concentrate output. The companies have described the arrangement as a 15-year deal covering 15% of Phase 1 production, with priority rights over material containing heavy rare earth elements such as dysprosium and terbium.
For buyers, the significance is not only the volume. It is the jurisdiction.
Greenland offers an alternative supply route at a time when the United States and other Western governments are trying to reduce exposure to China-dominated rare earth processing. That does not mean Africa is being displaced. It does mean African projects are being measured against a more competitive field of politically aligned, non-Chinese supply options.
Why the Tanbreez Deal Matters
Tanbreez is widely presented by its developers as one of the more important rare earth assets outside China, particularly because of its exposure to heavy rare earth elements. Those materials are commercially important because they are used in high-performance magnets and advanced industrial applications, including defense-related supply chains.
The deal is not a direct U.S. government purchase agreement. It is better understood as a private-sector offtake agreement that fits into Washington’s broader push for allied supply chains. That distinction matters for investors and mineral buyers: the agreement may support U.S. supply security goals, but execution still depends on project development, product qualification, permitting, financing and downstream processing capacity.
REalloys is positioning itself as part of a North American rare earth materials chain. Critical Metals is positioning Tanbreez as a non-Chinese source of feedstock. Together, the companies are trying to solve one of the hardest parts of the rare earth market: turning geological potential into qualified, usable material for customers with strict supply-chain requirements.
That is where Africa’s challenge becomes clearer. African countries hold major mineral resources, including cobalt, copper, graphite, lithium, manganese and rare earth prospects. But buyers do not contract on resource potential alone. They need security of supply, reliable permitting, credible logistics and a route to processing.
Africa Still Has Scale, But Scale Is Not Enough
Africa remains central to the critical minerals conversation. The continent is often cited as holding roughly 30% of the world’s mineral reserves, and several countries have deposits that are highly relevant to battery, defense, electronics and renewable energy supply chains.
The issue is not whether Africa has minerals. It does. The issue is whether enough projects can move through exploration, permitting, financing, construction and production on timelines that match buyer demand.
Several African rare earth projects are already in the market conversation. These include Kangankunde in Malawi, Longonjo in Angola, Ngualla in Tanzania, Songwe Hill in Malawi, Phalaborwa in South Africa and Lofdal in Namibia. Some are more advanced than others, and their production timelines should be treated as company targets rather than guaranteed delivery dates.
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For buyers comparing supply options, those projects are not interchangeable. A rare earth project with a clear mineral resource but no fully funded development plan carries a different risk profile from a project with permits, offtake interest, processing arrangements and a defined shipping route.
What Buyers Are Really Comparing
The Tanbreez agreement highlights a practical point for manufacturers, defense suppliers and commodity investors: the next wave of mineral deals will be judged on execution risk as much as geology.
| Decision factor | Greenland-style supply pitch | Africa project challenge |
|---|---|---|
| Jurisdiction | Politically aligned with Western supply-chain strategy | Varies widely by country, province and project area |
| Security risk | Generally lower than conflict-affected mining regions | Material issue in parts of the DRC, Mali and Mozambique |
| Permitting | Still required, but often framed as more predictable | Some projects face licensing, land, court or regulatory delays |
| Processing route | Must still prove qualification and downstream capacity | Many projects need clearer refining and separation pathways |
| Buyer confidence | Helped by long-term offtake structure | Depends on bankability, governance and delivery record |
This is the buyer-aware reading of the deal. A manufacturer does not simply ask where the ore is. It asks whether the supplier can deliver material that meets specification, on time, under a contract that survives political, security and financing pressure.
That is why Greenland can become more attractive even if Africa has deeper mineral potential in some categories. Stability, clarity and execution can outweigh theoretical resource size when a buyer is trying to qualify supply for sensitive applications.
China’s Role Keeps the Pressure On
The commercial urgency comes from China’s dominant role in rare earth supply chains, especially processing and separation. China remains the central player in global rare earth refining, and that concentration has made governments and manufacturers more sensitive to export controls, licensing delays and geopolitical disruption.
Heavy rare earth elements such as dysprosium and terbium are especially watched because they are difficult to replace in some high-performance magnet applications. They are not only mined; they must also be separated, refined and converted into materials that manufacturers can actually use.
That processing bottleneck is one reason new mining projects do not automatically solve supply risk. A mine outside China can still depend on Chinese processing unless the developer has a credible non-Chinese refining route. For African projects, this is both a risk and an opportunity. Countries that can move beyond raw exports and support processing, separation or precursor manufacturing may capture more value than those that remain feedstock suppliers.
The Security And Permitting Question
Africa’s strongest mineral opportunities sit alongside real operational constraints. In the Democratic Republic of Congo, rich deposits continue to attract strategic interest, but insecurity in parts of the country raises questions about logistics and reliability. In Mali, political instability and security threats have complicated investment planning. In Mozambique, violence in Cabo Delgado has increased risk around major resource developments, including projects in the broader graphite supply chain.
Regulation is another hurdle. Kenya’s Mrima Hill rare earth project has faced long-running licensing and legal disputes. In Madagascar and elsewhere, mining projects have had to navigate permitting uncertainty, government review and community concerns.
None of these issues make Africa uninvestable. They do raise the return threshold. A buyer or financier will want stronger protections, clearer milestones and better risk pricing before committing capital.
What African Projects Need To Prove Next
The lesson from Tanbreez is not that Africa has lost the critical minerals race. It is that the race is becoming more disciplined.
Projects that want long-term buyers will need to show more than resource size. The strongest candidates will be those that can demonstrate:
- Clear ownership and licensing status
- Credible production and processing timelines
- Security plans that match the risk profile of the operating area
- Bankable offtake agreements with qualified buyers
- Transparent environmental and community engagement
- A route to non-Chinese refining, separation or downstream manufacturing where relevant
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For governments, the same logic applies. Countries that want to attract critical minerals capital will need predictable permitting, enforceable contracts and infrastructure that lowers the cost of getting minerals to market. Resource nationalism may be politically attractive, but investors and industrial buyers will still price uncertainty into every deal.
The Bottom Line For Investors And Buyers
The Tanbreez offtake agreement gives REalloys a potential long-term source of rare earth concentrate from Greenland and gives Critical Metals a stronger commercial story for its project. More broadly, it shows how Western buyers are trying to secure supply before the tightest policy deadlines and market bottlenecks become more difficult to manage.
For Africa, the deal is a warning and an opening. The continent has the geology and the strategic relevance. But it is now competing with Greenland, Australia, North America and other jurisdictions that can pitch lower political risk or clearer alignment with Western supply-chain goals.
African rare earth and critical minerals projects that can combine scale with predictable execution will remain attractive. Those that cannot may find that buyers choose smaller but more bankable alternatives elsewhere.