Few countries command as much attention from the global mining industry as Guinea. Mining is not simply a sector of economic activity there; it is the foundation on which the country’s economic future is being built. Guinea holds the world’s largest bauxite reserves, estimated at around 7.4 billion tonnes, and exported more than 130 million tonnes in 2024. It also holds world-class iron ore, together with gold, diamonds and a range of other minerals.
Two developments have transformed this jurisdiction in the past eighteen months, and any assessment written before them is out of date.
Simandou is in production. After roughly three decades of delay, litigation and renegotiation, mining operations were formally launched on 11 November 2025. The first 200,000-tonne cargo left the new port of Morebaya in December 2025 and reached China in January 2026. The project comprises four blocks developed by Rio Tinto’s SimFer and Winning Consortium Simandou, and required a new trans-Guinean railway of roughly 650 km plus deep-water port facilities, at a total infrastructure cost above USD 20 billion. Design capacity is around 120 Mtpa at full build-out, with SimFer targeting 60 Mtpa in the second half of 2028. The state holds 15% in both mining joint ventures and in the Compagnie du TransGuinéen, which owns and operates the rail and port. The World Bank has projected Guinea as Africa’s fastest-growing economy in 2026.
And the state has been withdrawing mining titles at scale. Since May 2025, Guinean authorities have revoked more than 300 mining permits. That is not a footnote to a risk section; it is the central fact governing how any new investment should be structured.
Thiam & Associés, LEX Africa’s member firm in Conakry, advises international clients across the full spectrum of mining matters in Guinea. This guide sets out the key legal, regulatory and practical considerations.
The scale of Guinea’s mineral resources
Guinea’s endowment is extraordinary by any measure. Bauxite reserves are the largest in the world and Guinea is the leading global exporter, with output approaching 130 to 137 million tonnes annually and a record 183 million tonnes reported for 2025.
Simandou’s ore averages around 65% iron content, which is ultra-high grade and prized by steelmakers seeking lower-emission feedstock. Its ramp-up materially changes global seaborne supply of high-grade ore.
Beyond bauxite and iron ore, Guinea’s subsoil contains:
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Gold, mined across multiple regions, with artisanal and large-scale operations coexisting
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Diamonds, extracted principally in the south-east and in coastal areas
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Graphite and other minerals of growing interest given battery demand
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Uranium, where occurrences are known but remain largely unexplored
A note on precision: uranium in Guinea is a prospect, not a proven world-class resource, and claiming otherwise invites scepticism from technically literate readers. Similarly, Kindia is bauxite country rather than a historic diamond district. Getting the geology right is part of demonstrating that you know the jurisdiction.
The legal and regulatory framework
Mining is governed principally by the Mining Code adopted in September 2011 (Law L/2011/006/CNT), as amended in April 2013. With 221 articles, the 2011 Code replaced the 1995 regime and was intended to raise the sector’s fiscal contribution, embed local development obligations and improve transparency. Investors should confirm the current consolidated text and any subsequent reform at the point of application, as the sector has been under active review.
Mining titles
The Code establishes the following principal authorisations:
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Reconnaissance authorisation, for preliminary work
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Artisanal mining authorisation, granted to Guinean nationals for small-scale manual extraction
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Semi-industrial / small-scale mining permit, for Guinean legal entities using semi-mechanised methods
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Exploration permit (permis de recherche), the entry-level exploration title, renewable subject to minimum expenditure commitments
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Exploitation permit (permis d’exploitation), the standard title for industrial-scale production
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Mining concession (concession minière), reserved for the largest, longest-life deposits, with minimum investment obligations attaching to issue
The distinction between the exploitation permit and the concession matters commercially and is frequently collapsed in summaries of the regime. Most industrial projects operate under an exploitation permit, not a concession.
The Ministry of Mines and Geology grants, supervises and revokes mining titles. Investors engage with it throughout the project lifecycle, from application through production to closure and rehabilitation, with discharge from title obligations following joint inspection by the Mines and Environment ministries.
State participation
This is one of the most commercially significant features of the regime. The state is entitled to a 15% non-dilutable free-carried interest in exploitation projects, and holds an option to acquire up to a further 20% for cash, taking potential state ownership to 35%.
Free-carried interests of this kind interact awkwardly with shareholder agreements, loan covenants and offtake arrangements, and the interaction should be modelled at structuring rather than discovered at financial close.
Mining conventions
The Code provides for a bespoke mining convention (convention minière) between investor and state for large projects, addressing commercial and fiscal matters including stabilisation. One constraint is important: the 2011 Code prohibits mining conventions from derogating from its terms. A convention supplements the Code; it does not override it. Stabilisation is therefore narrower in practice than the concept suggests, and this should be tested rather than assumed.
Recent experience underlines the point. The decree revoking Guinea Alumina Corporation’s concession relied on non-compliance with the Code and with article 88 of its 2004 base convention, and stated that the mining domain reverted to the state free of charge and free from any claims relating to rights, interests or benefits.
Fiscal regime
The mining fiscal regime layers several obligations:
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Royalties, as a percentage of the value of minerals extracted, varying by commodity and sometimes by volume
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Corporate income tax under the general tax code, subject to defined exemptions or reductions
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Surface fees, payable annually on the area covered by the title
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Customs duties, with specific provisions for mining equipment and consumables
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Withholding taxes on dividends, interest and service fees remitted offshore
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Local Economic Development Fund contribution, at 0.5% of annual turnover
The interaction of these obligations, and the extent to which any can be stabilised, requires analysis at structuring. Fiscal change has occurred repeatedly in Guinea and materially affects project economics.
The compliance obligations that are now being enforced
This section carries more weight than it did two years ago, because obligations previously treated as background are now the stated basis for withdrawing titles.
Local content and in-country processing
Guinean law requires prioritised employment and training of nationals, local procurement where practicable, and contribution to local infrastructure. These are enforceable, not aspirational.
The obligation now attracting the most enforcement attention is downstream processing. Government policy has pushed bauxite operators to commit to building alumina refineries in Guinea, and failure to do so has been the express ground for revocation. Any bauxite investment thesis that does not address refining is exposed.
Environmental and social impact assessment
An ESIA is required before an exploitation title is granted, involving consultation with affected communities, engagement with government agencies and independent review. Lenders and investors increasingly benchmark Guinean ESIAs against International Finance Corporation standards. Environmental and rehabilitation obligations under the 2011 Code are detailed, and Simandou has drawn sustained scrutiny from conservation groups over impacts in the range’s forested landscape.
Community development agreements
Holders of exploitation permits and concessions are required to enter into development agreements with communities around their operations. Managing these transparently is a legal obligation and a precondition of operating without disruption.
Investment risk: the current picture
Regulatory and expropriation risk
This is now the dominant risk in the jurisdiction and it deserves candid treatment.
In May 2025 the President directed the Minister of Mines to withdraw the permits and concessions of any company failing to meet its legal obligations. Decrees followed almost immediately, including revocation of Guiter Mining’s semi-industrial permit and Kebo Energy’s concession. A subsequent decree revoked roughly 50 gold, bauxite and diamond exploration and exploitation licences plus a graphite exploitation licence; Falcon Energy Materials publicly denounced it as illegal and inconsistent with Guinean mining legislation. In total, more than 300 permits have been withdrawn since May 2025.
The most significant case is Guinea Alumina Corporation, a subsidiary of Emirates Global Aluminium. GAC’s exports were suspended in October 2024 over the unbuilt refinery. EGA terminated its base agreement in July 2025 and wrote down GAC’s value in full at about USD 680 million. On 4 August 2025 the President signed a decree revoking the 690 km² Boké concession, holding roughly 400 million tonnes of bauxite, and transferring it to state-backed Nimba Mining Company. EGA characterised this as an illegal takeover and de facto expropriation.
The sequel is instructive. In May 2026, Guinea, EGA and GAC announced a negotiated settlement ending an eighteen-month dispute, with Conakry paying a lump sum in exchange for the asset transfer, and the settlement also covering Compagnie des Bauxites de Guinée, which had suspended deliveries to EGA. EGA’s dependence on Guinean bauxite for its Al Taweelah refinery made a negotiated outcome more attractive than protracted litigation.
Two lessons follow for investors. Compliance with stated obligations, particularly downstream processing commitments, is now the principal determinant of title security. And commercial leverage — an operator’s importance to the state’s own supply chain and revenue — may protect a position more reliably than a paper right.
Political risk
Guinea has returned to constitutional order on the government’s own terms. A new constitution was promulgated in September 2025; Mamadi Doumbouya, who took power in the September 2021 coup, won the presidential election of 28 December 2025 with 86.72% and was inaugurated in January 2026; a new government was formed on 4 February 2026; and parliamentary elections in May 2026 gave the president’s coalition a large majority.
Investors should note that international observers and opposition groups criticised the conduct of both elections, major opposition parties were barred from the legislative poll, and 40 political parties were dissolved in March 2026. The practical implication is a stable and highly centralised executive with a clear resource-nationalist policy direction, rather than a contested or unpredictable one. That is a different risk profile from instability, and it calls for different mitigation.
Infrastructure
Guinea’s road and rail networks in the interior remain underdeveloped relative to the scale of the resource. Simandou demonstrates both the constraint and the response: an entirely new trans-Guinean railway and deep-water port, developed through a dedicated infrastructure vehicle in which the state holds an interest. Infrastructure of this scale carries legal, financing and commercial implications that must be addressed in project agreements, including access, tariffs and third-party use.
Currency and repatriation
Exchange control and the ability to repatriate profits, dividends and loan repayments are material considerations. Mining conventions often address these, but the applicable regime should be confirmed currently rather than assumed from precedent transactions.
Dispute resolution
Guinea is a party to the ICSID Convention, and mining conventions typically specify an international arbitral forum. Drafting these provisions carefully is fundamental.
It is worth being realistic about what they deliver. The GAC decree purported to extinguish claims to rights, interests and benefits, and the dispute ultimately resolved through negotiation rather than arbitration. An enforceable arbitration clause remains essential, but it is a backstop rather than a substitute for maintaining compliance and commercial leverage.
Why legal expertise matters
The combination of a regulatory framework in active enforcement mode and the capital at stake in any major mining project makes experienced local counsel indispensable. Title due diligence now means checking not only that a title exists but that its holder is current on the obligations the state has shown willingness to enforce through revocation.
Thiam & Associés is an independent business law firm based in Conakry, with a legal counsel office in Abidjan, whose lawyers largely built their experience in leading international firms. As part of LEX Africa, they work with member firms across the continent so that clients with cross-border operations or financing arrangements receive coordinated advice.
How LEX Africa can support your mining operations in Guinea
Whether you are at exploration stage, negotiating a mining convention, structuring project finance or managing an operational dispute, our services include:
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Title due diligence and regulatory compliance review, including obligation status
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Advice on licence applications, renewals and transfers
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Negotiation and drafting of mining conventions
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Fiscal and structuring advice
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Joint venture and shareholder agreement drafting, including state participation mechanics
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Local content and downstream processing compliance strategy
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Environmental, social and community development compliance
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Dispute resolution and arbitration support
Guinea’s mineral wealth is genuinely transformative, and Simandou has moved the country from promise to production. The opportunities are substantial for investors who engage with the current regulatory reality rather than the one described in older guidance.
Contact LEX Africa to speak with our Guinea team about your mining interests.