Sovereignty in the Subsoil: How Brazil's New Mineral Law Is Rewriting the Rules for Every Foreign Investor in the Country

Introduction

The ceremony at the Planalto Palace on September 16 had the texture of a political culmination. President Luiz Inácio Lula da Silva stood before a crowd of ministers, lawmakers, and industry representatives in Brasília and declared, with the particular emphasis he reserves for moments he intends to be remembered, that Brazil's sovereignty was not for sale. "We are not and will never again be a colony," he said. Behind him, on a display, were the minerals Brazil sits on top of: lithium, niobium, rare earth elements, cobalt, graphite, nickel, copper, vanadium, titanium, uranium.

With that, Lula signed Federal Law No. 15,506/2026, establishing the National Policy on Critical and Strategic Minerals, known by its Portuguese acronym PNMCE. A companion decree, Federal Decree No. 13,118/2026, issued the same day, created the National Council for the Industrialization of Critical and Strategic Minerals, or CIMCE, and the president simultaneously installed its first members. In a single afternoon, Brazil enacted what legal analysts across four continents quickly recognized as one of the most comprehensive sovereign mineral governance frameworks to emerge from a major producer nation this year.

The law had a long and turbulent path to that signing table. It consolidated fourteen separate legislative proposals into a single framework, a first in Brazilian history, and survived a nearly four-month Senate stall after its House passage by a 343-to-97 vote in May. What emerged is a structure that does several ambitious things at once: it formalizes a national minerals policy, creates a federally controlled approval and screening council, mandates supply chain traceability, conditions every financial incentive on domestic processing, and introduces investment screening powers that analysts at Covington and Burling have compared, with careful qualification, to a Brazilian CFIUS. For every foreign company that has spent the past two years courting Brazil's geological endowment, the law changes the terms of engagement in ways that are only beginning to come into focus.

The Geology That Made This Moment Inevitable

To understand why this legislation matters beyond Brazil's borders, it helps to sit with the numbers for a moment. Brazil controls somewhere between 94 and 98 percent of global known niobium reserves, depending on which authoritative source you consult; the Peterson Institute for International Economics puts the figure at roughly 95 percent. Through the Companhia Brasileira de Metalurgia e Mineração, known as CBMM, the country supplies approximately 90 percent of global niobium demand. That is not a commodity position. That is a chokehold, one that experts describe as giving Brazil a degree of pricing power and strategic leverage that few nations possess over any single resource of industrial importance. And niobium's importance is expanding: beyond its established role in high-strength steels and superconductors, the element is increasingly relevant to battery technology, where it can enhance energy density in lithium-ion systems.

Rare earth reserves tell a similar story. The U.S. Geological Survey estimates Brazil holds approximately 11 million metric tons of rare earth reserves, the second-largest concentration in the world after China, though the Brazilian Mining Institute places that figure considerably higher, at 21 million metric tons. The country also ranks among the top five global natural graphite reserve holders, holds substantial hard-rock lithium deposits in Minas Gerais and the Jequitinhonha Valley, and hosts significant concentrations of copper, cobalt, manganese, and vanadium. Crucially, only about 27 percent of Brazil's territory has been geologically mapped, meaning the known figures almost certainly undercount the actual endowment.

For decades, this wealth sat largely unlegislated at the strategic level. Brazil's foundational mining rules dated to a 1967 code, designed for a different era and a different global economy. The country exported mineral concentrates while China, which controls roughly 90 percent of global rare earth processing capacity, acquired stakes in Brazilian operations with accelerating pace. In 2025, Anglo American agreed to sell its Barro Alto and Codemin nickel mines in Goiás, along with other assets in Pará and Mato Grosso, to MMG, a company controlled by the Chinese state-owned enterprise China Minmetals, in a transaction valued at approximately 500 million dollars. The pattern was unmistakable: Brazil had the rocks, China was buying the mines, and Brasília had no modern federal framework to shape the terms.

Monica de Bolle, Brazilian economist and senior fellow at the Peterson Institute, put it with characteristic precision in a Foreign Policy interview in July: this is Brazil's "knife-edge moment." On one side, she observed, "all of these different regions and countries, they want in on the Brazil game." On the other side sits the risk that a country with vast geological wealth but limited processing capacity and scarce capital ends up once again watching others capture the industrial value its subsoil generates. The PNMCE is, at its core, Brasília's attempt to refuse that outcome.

What the Law Actually Does

The PNMCE is not a simple document, and its critics are right to note that it is as significant for what it defers as for what it establishes. The framework formally distinguishes between two categories of minerals. Critical minerals are those vulnerable to supply disruptions and essential to key economic sectors. Strategic minerals are those for which Brazil holds significant reserves and that are important to the country's trade balance, technological development, or emissions reductions. The list, which currently includes cobalt, copper, graphite, lithium, niobium, nickel, rare earth elements, titanium, uranium, and vanadium, will be updated every four years by the government acting through CIMCE.

The institutional centerpiece is CIMCE itself. Its placement matters enormously: the council sits not under the Ministry of Mines and Energy, which had lobbied to house it, but directly within the Brazilian President's Office. With up to 20 members and powers that range from approving priority projects to ratifying changes in corporate control of companies holding mineral rights, CIMCE is structured as an executive instrument with reach across the entire value chain. It can approve, condition, or reject screened transactions. It can initiate reviews on its own motion, without waiting for notification from parties. And it will control access to strategic geological information, requiring approval before foreign companies or entities with significant foreign influence can access it.

The second pillar is the National Registry of Critical and Strategic Mineral Projects, the CNPMCE. Registration is mandatory for all qualifying projects. More consequentially, every incentive the law creates, including the tax credits, the guarantee fund, and the debenture mechanisms, is conditioned on project registration and CIMCE qualification. Companies that fail to register or fail to obtain approval are simply ineligible for all of it. This architecture makes CIMCE approval not a bureaucratic formality but the gateway through which all policy benefits flow.

On the financial side, the law's most structurally significant provision is the Federal Program for the Processing and Transformation of Critical and Strategic Minerals, the PFMCE. It provides 20 percent tax credits on qualifying capital expenditure for companies that process or transform minerals in Brazil, with a total credit envelope of 5 billion reais between 2030 and 2034. The Mineral Activity Guarantee Fund, the FGAM, is authorized with potential federal assets of up to 2 billion reais, roughly 392 million dollars at time of approval. Companies in the sector must contribute 0.2 percent of gross operating revenue to the FGAM for their first six years of operations, and 0.3 percent of gross revenue to research and development, a figure that rises to 0.5 percent after year six. The combined obligations for early-stage operators amount to 0.5 percent of gross revenue from the outset, a number that analysts note is manageable but not trivial for junior miners with thin margins.

The law also introduces a mandatory supply chain traceability system and allows the government to impose value-addition requirements on mineral exports, though the details of both mechanisms are deferred to future regulation. A voluntary Low-Carbon Mineral Certificate provides an additional commercial incentive for projects meeting environmental standards. And exploration permits for critical or strategic mineral deposits now carry a hard, non-extendable 10-year cap: if the Final Exploration Report has not been submitted to Brazil's national mining agency, ANM, by that deadline, the mining right lapses. The only exception is time lost to environmental licensing delays, a carve-out that legal analysts at Geomechanics.io have described as narrow given the complexity of some multi-mineral deposits.

The CFIUS Question and the Investor Dilemma

For international investors, the most consequential and least settled aspect of the PNMCE is the screening regime. The transactions subject to CIMCE review are broad: corporate transactions and changes in control of companies holding mineral rights, access to strategic geological information by foreign or foreign-influenced entities, certain international supply or offtake contracts that could affect economic security, and the sale, transfer, or encumbrance of mining rights. That last category is particularly significant; CIMCE's remit extends to the pledging of mineral rights as collateral, not just M&A transactions, which means project finance structures that rely on mining rights encumbrances could require approval before banks will advance funds.

Covington and Burling's analysis describes the mechanism as "potentially a first step towards a 'Brazilian CFIUS,'" an analogy that is both clarifying and alarming depending on where you sit. The comparison is clarifying because it captures the structural similarity: a multi-ministry executive body with discretionary authority to block transactions on security grounds, sitting outside the ordinary judicial and regulatory frameworks. It is alarming because even a well-functioning CFIUS is, from an investor's perspective, a source of timing uncertainty, and the Brazilian version does not yet have the thing that makes CFIUS at least theoretically navigable: clear, published criteria.

As of the law's enactment, the rules and criteria governing CIMCE approval decisions have not been established. The framework creates the architecture. The practical content, what factors will be weighed, what timelines will apply, what information will be required, awaits executive action. Covington's analysts put the risk precisely: "If approval criteria are objective, transparent and applied consistently and within reasonable timelines, the additional oversight may be manageable. If they depend on broadly defined concepts such as economic or geopolitical security without sufficiently clear parameters, the mechanism could introduce uncertainty into transactions precisely when Brazil is seeking additional international capital."

Frederico Bedran, a director at the association representing mining municipalities, was less diplomatic in his assessment, warning that the law as written creates what he called "insegurança jurídica e uma imprevisibilidade muito grande," legal insecurity and very great unpredictability. The São Paulo law firm Mattos Filho identified a related structural tension: by conditioning all incentives on domestic processing and transformation, without critically assessing whether Brazil currently has the competitive infrastructure to make that processing viable at scale, the law risks undermining the very investments it is designed to attract. Processing lithium into battery-grade material or separating rare earth oxides requires not just capital but technology, energy, water, and supply chain integration that Brazil is only beginning to develop at scale. Bloomberg's analysis from May 2026 was pointed on this gap, noting that Brazil "lacks both the investment capital and the processing technology required to translate its geological endowment into market supply."

None of this means the framework is poorly designed in principle. The law explicitly does not establish a state monopoly, and there is no formal ex ante limit on foreign investment. The CIMCE must be formally established within 90 days of the law's publication, meaning by roughly December 15 of this year, and the mineral list and operating procedures will follow. The question is whether the period between enactment and full operationalization, during which investors must make decisions about projects and transactions without knowing the rules that will govern them, produces a chilling effect that the incentive package cannot offset.

The Diplomatic Geometry: Washington, Beijing, and the Knife-Edge

The PNMCE did not emerge in a geopolitical vacuum, and its investment screening provisions are impossible to read without reference to the scramble that has been accelerating around Brazil for the past eighteen months. As I reported in September covering the countdown to China's expiring mineral export control suspension, the global competition for secure mineral supply has reached a pitch at which every significant producer nation is being actively courted by multiple competing blocs simultaneously. Brazil is not a peripheral player in that competition. It is, arguably, the single most important swing resource state in the Western Hemisphere.

Washington has recognized this. American officials are reportedly monitoring more than 50 critical minerals projects across Brazil representing billions in potential investment, and U.S.-Brazilian cooperation agreements on rare earths and other minerals advanced in 2026, with initiatives centered on Goiás state aimed at promoting investment, technical exchange, and processing capacity. But the diplomatic geometry here has been complicated by an episode that Brazilian federal officials found distinctly irritating: a preliminary agreement signed in March 2026 between U.S. interlocutors and Goiás Governor Ronaldo Caiado, which appeared to route around the federal government entirely. Brazilian federal officials expressed what Discovery Alert's reporting described as "private frustration at perceived attempts to bypass federal authority." The PNMCE, with its federally anchored screening council sitting in the President's Office rather than any ministry, is in part a structural answer to that frustration. Any future agreement, whether with Washington, Seoul, Brussels, or anyone else, must now clear a federal gateway.

India moved early and at the federal level. On February 21, Presidents Lula and Modi met in New Delhi and signed a critical minerals and rare earths cooperation agreement that both leaders described in terms of strategic supply chain resilience. "The agreement on critical minerals and rare earths is a major step towards building resilient supply chains," Modi said. Lula framed it as foundational: "Increasing investments and cooperation in matters of renewable energies and critical minerals is at the core of the pioneering agreement that we have signed today." Brazil also signed critical minerals partnership agreements with South Korea in February, and Brazil's Ministry of Mines and Energy has explicitly stated openness to working with multiple countries without exclusivity arrangements, a deliberate posture of strategic non-alignment at the transactional level even as the country aligns politically with the diversification agenda.

China's position is more complex. Chinese companies have accelerated their acquisition of Brazilian mining assets in ways that the new screening framework will directly complicate. MMG's purchase of Anglo American's nickel operations was completed before CIMCE existed; future transactions of that kind will require CIMCE approval, the criteria for which remain undefined. Serra Verde, considered one of the most important sources of heavy rare earths outside China, had contracts with Chinese customers set to expire by the end of 2026, creating a window that Western buyers are watching carefully. The Rare Earth Exchanges characterizes the PNMCE as "Great Powers Era 2.0 written into law," arguing that Brazil is not simply choosing Washington over Beijing but is "trying to turn geology into sovereign bargaining power as the U.S., China, and Europe compete for secure mineral supply." That framing captures the law's essential ambition, and also its essential risk: sovereign bargaining power is only durable if the sovereign has the institutional capacity to exercise it consistently and transparently over time.

What Comes Next: The 90-Day Clock and the Unfinished Architecture

The signing ceremony was not the end of the legislative story. It was, in many respects, the beginning of a harder and less publicly visible process. CIMCE must be formally constituted within 90 days of the law's publication, by approximately December 15, 2026. Before then, the council needs to publish the official list of qualifying minerals, establish its operating procedures, define screening criteria, set the parameters for the PFMCE processing incentive program, and begin working through whatever queue of pending transactions has accumulated during the transition period. That is an ambitious agenda for an institution that did not exist until this month.

The Adriano Drummond Trindade analysis published in Mining.com's opinion section on September 10, before the final signing, remains the most useful framework for thinking about what comes next. Brazil, Trindade wrote, "is moving decisively to claim a larger role in the global critical minerals economy, but the policy approved by Congress may ultimately be judged by whether its ambitions for national sovereignty can coexist with the legal certainty needed to attract mining investment." That judgment will be rendered not in Brasília but in the investment committees of mining companies in London, Melbourne, Toronto, and Seoul, and in the financing windows of multilateral development banks that have been looking for exactly this kind of regulatory anchor in resource-rich developing nations.

There are reasons for cautious optimism. The law explicitly embraces regulatory stability, legal certainty, and predictability as stated principles, not just aspirational rhetoric but formal policy objectives. The PFMCE's 20 percent credit on processing capital expenditure is a genuinely competitive incentive for companies willing to build downstream capacity in Brazil rather than export concentrate. The FGAM guarantee fund addresses a real barrier: access to project financing for mid-tier operators who cannot self-guarantee. And the urban mining provisions, which extend PNMCE coverage and incentives to the recycling and recovery of critical minerals from end-of-life products, signal a sophistication about the full mineral value cycle that is absent from most comparable national frameworks.

The risks are real too, and they are concentrated in the implementation gap. Every significant provision of the law, from the mineral list to the screening criteria to the export value-addition rules to the environmental licensing priority procedures, requires further regulatory action before it has practical content. Demarest Advogados' analysis makes the layering problem explicit: "investors treating CIMCE approval as the only discretionary gate are likely underestimating how many independent decision points exist between exploration licence and first production." Federal, state, and sectoral permits; environmental licensing; ANM approvals; CIMCE screening; and whatever future regulations the executive branch issues under the PNMCE's broad delegations of authority: all of these must be navigated in sequence, often without clear timelines or appeal mechanisms.

Lula's political calendar adds another variable. The first round of Brazil's presidential election is scheduled for October 4, just eighteen days after the signing ceremony. Lula is seeking a fourth nonconsecutive term, and the critical minerals sovereignty narrative has become a central campaign theme. The question of how the PNMCE's implementation proceeds if the political landscape shifts, or if Lula wins and appoints a CIMCE leadership with different instincts about foreign capital, is one that international investors are privately modeling in ways that their public statements do not reflect.

Conclusion

Back at the Planalto Palace on September 16, Lula offered a line that was aimed partly at his domestic critics and partly at the international audience watching closely from Washington, Beijing, Brussels, and beyond. "First of all, we must overcome internal adversaries," he said. "As always, the traitors of the homeland have once again fallen to their knees before the United States. They promised to hand over our critical minerals and rare earths in their raw state." The language was deliberately combative, designed for an election season and a particular domestic political moment. But beneath the rhetoric was a substantive claim: that Brazil, for the first time, has the legal architecture to demand more from its geological wealth than a loading dock at a port.

Whether that architecture delivers what it promises depends on decisions that have not yet been made, by regulators who have not yet been fully appointed, operating under criteria that have not yet been published, in a market that is moving faster than any domestic regulatory calendar can comfortably track. The global competition for rare earths, lithium, and the other minerals that define the energy transition and the defense industrial base is not waiting for CIMCE to finalize its procedures. Chinese buyers, American strategists, Indian planners, and Korean chipmakers are all making decisions right now about where to secure supply for the next decade.

Brazil has finally arrived at the table with a sovereign framework in its hand. The question, as Monica de Bolle suggested from her vantage point at the Peterson Institute, is whether the knife-edge moment produces a durable new position or another missed chance to convert geology into genuine industrial power. The 90-day clock is already running.