Posco buys Hombre Muerto North lithium project for $62mn

Posco Lithium Project

Posco buys Hombre Muerto North lithium project for $62mn to expand its Argentine footprint. The move strengthens Posco’s brine-based LCE pipeline. As a result, Posco buys Hombre Muerto North lithium project at a strategic time.

Deal terms and project scale

Posco buys Hombre Muerto North lithium project from Lithium South under a non-binding pact. Posco Argentina agreed to acquire 100pc of the project for $62mn. The package includes five concessions and the lithium-rich brine resource. The agreement requires a 60-day due diligence period. Afterwards, both parties have 60 days to finalize a definitive deal. The project holds about 1.58mn t of brine-based LCE capacity. Forecast nameplate output stands at 15,600 t/yr.

Strategic fit in Hombre Muerto

Posco buys Hombre Muerto North lithium project near its existing Mariana asset. Posco Argentina operates the country’s only active lithium hydroxide facility. Therefore, integration could streamline brine processing and product conversion. Hombre Muerto is Argentina’s most coveted lithium basin. Rio Tinto’s Fenix project has produced lithium carbonate since the 1990s. Meanwhile, Posco’s local platform supports supply to battery value chains.

Steady drivers support the acquisition rationale. The basin offers proven brine chemistry and established logistics. The deal size suggests disciplined capital entry. However, completion depends on due diligence and final documentation. Lithium South disclosed the headline terms and timeline. Market participants will watch offtake and financing details.

The Metalnomist Commentary

This move consolidates Posco’s position in Argentina’s lithium triangle. The proximity to Mariana could reduce development risk and operating costs. Watch execution milestones and brine performance against the 15,600 t/yr target.

Argentina Lithium Production Push Strengthens Critical Minerals Growth Strategy

Daniel Gonzalez

Argentina lithium production is accelerating as the country seeks to become one of the world’s leading suppliers of battery materials. Vice-minister of energy and mining Daniel Gonzalez said Argentina is now the fastest-growing lithium producer and expects the country to become the largest soon.

The government has raised Argentina’s estimated lithium reserves to 23mn t of lithium carbonate equivalent. It has also increased its copper reserve estimate by 3mn t since last September, strengthening the country’s position across two key energy transition metals.

Argentina lithium production is being expanded by companies including Rio Tinto, Ganfeng, Lithium Argentina and Posco. At the same time, the country is working to develop four greenfield copper projects that could create a new large-scale copper industry.

Lithium Growth Positions Argentina as a Battery Materials Powerhouse

Argentina’s lithium growth reflects the strategic importance of its brine resources in the global battery supply chain. Demand from electric vehicles, energy storage and battery manufacturing continues to support long-term interest in secure lithium carbonate and lithium hydroxide supply.

The country’s larger reserve estimate improves its investment case. It gives developers, battery manufacturers and downstream customers more confidence that Argentina can support long-term production growth.

However, reserve scale alone will not guarantee success. Argentina must convert projects into reliable production, build infrastructure, manage water and permitting risks, and maintain stable rules for foreign investors.

Copper Ambition Adds Depth to Argentina’s Mining Strategy

Argentina is also targeting major copper growth. Gonzalez said the country aims to produce 1.5mn-2mn t of copper over the next five to seven years, supported by four greenfield projects now under development.

This copper ambition is significant because copper is central to grids, electrification, renewable energy, electric vehicles and industrial infrastructure. If Argentina can deliver new copper output, it could become a more important supplier to global energy transition supply chains.

The government is using tax incentives to attract investment. These include a lower income tax rate, no tariffs on imports, no export duties, and 30 years of regulatory and tax stability.

Still, investor confidence remains the key challenge. Argentina is trying to recover from years of policy volatility and economic mismanagement, while the cost of capital remains high. Lower financing costs will be essential if the country wants to move large lithium and copper projects from ambition to production.

The Metalnomist Commentary

Argentina has the mineral base to become a major lithium and copper supplier, but geology is only the starting point. The real test will be whether tax stability, investor trust and project execution can overcome the country’s long history of policy risk.

Argentina lithium production capacity set to surge 250pc by 2035

Argentina lithium

Argentina lithium production capacity is entering a new expansion phase that will reshape global battery raw material supply. The government now targets a more than 250pc increase in Argentina lithium production capacity over the next decade, after capacity has already more than doubled in the past two years. This rapid scale-up positions the country as a central pillar of the lithium triangle and a strategic partner for global battery and EV manufacturers seeking long-term supply security.

Rapid build-out of Argentina lithium production capacity

Argentina lithium production capacity has grown from 75,500 t/yr in 2023 to 186,000 t/yr of LCE in 2025. This represents a 146pc increase and marks a sharp acceleration from 2015, when just 35,000 t/yr came from two active projects. Today there are seven operating projects across multiple salars, backed by a mix of global and regional producers. These assets include operations linked to Rio Tinto, Posco, Ganfeng, Lithium Argentina, Zijin and a Franco-Chinese joint venture, reflecting diversified ownership and financing structures.

By 2030, Argentina lithium production capacity is expected to reach 418,000 t/yr and then rise to 658,000 t/yr by 2035. This trajectory implies a potential 253pc increase versus 2025 levels as brownfield expansions and new projects ramp up. Authorities built their outlook on 15 projects, combining the seven operating sites, their planned expansions and eight advanced developments such as Hombre Muerto West, Pozuelos-Pastos Grandes, new carbonate units and brine projects in the pipeline. As a result, Argentina is moving from a niche supplier to a core pillar of global LCE growth.

Strategic implications for global lithium supply chains

This expansion of Argentina lithium production capacity comes as automakers and battery producers seek diversified supply beyond a few dominant jurisdictions. Additional Argentine brine output should help ease medium-term supply risk, even as demand from EVs, energy storage and grid applications continues to grow. However, timing risks remain around permitting, infrastructure, community engagement and financing, which could still shift the actual ramp-up profile.

For investors, the enlarged project pipeline offers exposure across different risk and return profiles, from established brine operations to newer developments led by mid-tier players. Meanwhile, downstream buyers are likely to pursue more long-term offtake agreements in Argentina to lock in volumes and hedge against price volatility. Over time, the country’s growing role in the lithium triangle may also support the emergence of local value-added industries, such as cathode materials or battery component production, if policy and infrastructure align.

The Metalnomist Commentary

Argentina’s push to expand lithium production capacity confirms that supply growth will not be constrained to one or two regions. The key question is not whether capacity is planned, but how much of it will arrive on time and on budget. For now, Argentina looks set to climb rapidly up the league table of LCE producers, but execution risks, water management and community dynamics will ultimately determine how much of this theoretical capacity becomes reliable, long-term supply.

Argentina Salta Lithium Boom Positions Province as Global Energy Transition Hub

Argentina Salta Lithium

Argentina Salta lithium boom accelerates as the northern province emerges as the cornerstone of the country's expanding mining industry following government approval of Rio Tinto's Rincon project under the RIGI incentive program. The Argentina Salta lithium boom reflects strategic positioning within global energy transition supply chains, with provincial mining secretary Romina Sassarini declaring Salta will become "a reference point for lithium in the country and worldwide" as multiple international producers establish operations in the resource-rich region.

RIGI Program Attracts International Lithium Investment

Argentina Salta lithium boom benefits from the national government's RIGI economic and legal incentive program that provides fiscal and legal stability for major mining investments. Rio Tinto's newly approved Rincon mine represents the fourth lithium project in Salta, requiring $2.7 billion investment to produce 60,000 tonnes annually by decade's end. China's Ganfeng, France's Eramine, and South Korea's Posco already operate lithium production facilities while applying for RIGI incentives for expanded production stages.

Meanwhile, Argentina's lithium output surged from 75,000 tonnes in 2024 to projected 131,000 tonnes in 2025 according to mining trade organization CAEM. This rapid production growth positions Argentina as a critical supplier for global battery markets while establishing Salta as the primary production hub. The province's strategic importance extends beyond lithium to include copper and gold reserves, including First Quantum Minerals' $3.5 billion Taca Taca copper-gold-molybdenum project awaiting final permits.

Infrastructure Development Addresses Production Bottlenecks

However, massive infrastructure investments are required to support expanding mining operations and projected production growth. Mining projects operating and planned in Salta require additional 575MW of electricity generation capacity, prompting provincial development of comprehensive electricity plans emphasizing solar power deployment. The renewable energy focus aligns with sustainable mining practices while addressing power supply constraints.

Therefore, transportation infrastructure development becomes equally critical as the province pursues multilateral bank financing for the 2,400-kilometer bi-oceanic highway connecting Brazil to Chile through Argentina and Paraguay. This continental corridor will enable efficient lithium and mineral exports to Pacific and Atlantic markets while reducing logistics costs. Sassarini emphasized that coordinated efforts between provincial, company, and national government stakeholders will resolve logistic bottlenecks limiting industry growth.

Argentina Salta

Strategic Positioning Supports Global Supply Chain Integration

Furthermore, Salta's emergence as a world-class lithium exporter addresses growing global demand for battery materials essential to electric vehicle production and energy storage systems. The province's integrated approach combining multiple international producers, infrastructure development, and regulatory stability creates competitive advantages for sustained industry growth. Mining sector transformation generates substantial economic impact through employment, tax revenue, and supply chain development.

As a result, the RIGI program eliminates financial bottlenecks while creating frameworks for long-term industry development across multiple mineral commodities. Salta's strategic positioning within the Lithium Triangle region enhances Argentina's competitiveness against Chilean and Bolivian producers while serving diverse global markets. The coordinated development approach demonstrates how provincial governments can catalyze mining industry growth through targeted policy support and infrastructure investment.

The Metalnomist Commentary

Argentina's Salta province exemplifies how strategic resource endowments combined with supportive policy frameworks can rapidly transform regional economies into global supply chain hubs, particularly important as lithium demand accelerates through energy transition requirements. The province's comprehensive approach addressing both production capacity and infrastructure bottlenecks demonstrates sophisticated understanding of mining industry development requirements, positioning Salta advantageously within the competitive global lithium market as established and emerging producers seek reliable supply sources.

Posco Argentinian Lithium Projects Delayed Amid Prolonged Price Slump

Argentinian Lithium Projects

South Korea’s Posco has delayed completion of its Argentinian lithium projects by six months, citing sluggish lithium price recovery. The Posco Argentinian lithium projects were originally set to complete Phase 2 by Q3 2025 but are now rescheduled for Q1 2026.

Phase 2 Pushed Back as Market Conditions Weaken

Posco began operating its 25,000 t/yr lithium hydroxide plant in Argentina last year. The planned Phase 2 would have doubled capacity to 50,000 t/yr through a connected upstream brine project. However, weak lithium prices and soft global demand forced a schedule revision. The company now aims to optimize production systems and ramp up Phase 1 by late 2025.

This move reflects Posco’s strategic adjustment amid a volatile market. In its April 24 report, Posco highlighted the need for operational flexibility in response to sustained pricing pressures.

Lithium Price Pressure Forces Broader Strategic Realignment

The lithium downturn also contributed to Posco ending its nickel refinery joint venture with China’s CNGR. The JV’s liquidation will complete by June, marking a retreat from previously planned upstream battery material partnerships.

Meanwhile, Posco Future M—Posco's battery materials subsidiary—posted quarterly revenue growth of 17% but a 26% decline year-on-year. Profitability rebounded modestly, helped by rising sales of high-nickel cathode active material (CAM) and growing demand for non-Chinese anode active material (AAM).

China Price Slide Highlights Global Supply Chain Fragility

Chinese lithium carbonate prices remain under pressure due to weakened demand and US-China trade tensions. As of 22 April, lithium carbonate prices dropped to ¥69,000–72,000/t ($9,463–9,874/t), extending a multi-week decline. This pricing environment complicates investment timelines and return expectations for global lithium projects.

The Metalnomist Commentary

Posco’s delay reflects broader capital discipline across the lithium sector amid persistent price volatility. With Phase 2 postponed, the company is signaling caution, while still committing to its long-term battery supply chain strategy in South America.

Posco and Hancock Prospecting to Construct New Lithium Plant

Hancock Prospecting

In an ambitious move to secure a more robust lithium supply chain, South Korean steelmaker Posco, in partnership with Australia’s Hancock Prospecting, has announced plans to build a 30,000 metric tonne per year lithium processing plant. The exact location of the plant is still under deliberation, with potential sites being evaluated in various countries, including South Korea.

Strategic Expansion in Lithium Sector

The collaboration between Posco and Hancock is a strategic step to bypass US Foreign Entity of Concern (FEoC) regulations and solidify Posco's standing in the lithium value chain. Posco’s plan is to manage a full spectrum from mining and extraction from salt lakes to producing lithium hydroxide and cathode materials, and eventually recycling them. This comprehensive approach aims to fortify its supply chain amidst growing demand for lithium, primarily driven by the electric vehicle and renewable energy sectors.

Global Partnerships and Investments

Both Posco and Hancock are not new to the lithium industry. Hancock holds a 19.9% stake in Liontown Resources, an Australian lithium developer. Posco has been extending its reach in the lithium market through various international partnerships, including joint ventures with Pilbara Minerals in Australia and an investment in the Sal de Ora brine project in Argentina’s Salar del Hombre Muerto.

These ventures underline both companies' commitment to strengthening their positions within the global lithium market, which is expected to grow significantly due to the increasing emphasis on sustainable and renewable energy resources.

Chile Rio Tinto Lithium Deposit Partnership Secures Largest Undeveloped Resource

Chile Rio Tinto

Chile Rio Tinto lithium deposit partnership emerged as Chile's national mining company Enami selected the Anglo-Australian miner to explore and develop the Altoandinos project, the country's largest undeveloped lithium deposit. The Chile Rio Tinto lithium deposit agreement establishes a public-private concession with Rio Tinto holding 51% ownership while Enami retains 49%, representing a combined $3 billion investment where Rio Tinto contributes $425 million for access to over 15 million tonnes of lithium carbonate equivalent resources.

Competitive Selection Process Validates Rio Tinto's Technology Leadership

Chile Rio Tinto lithium deposit selection followed Enami's unanimous board decision choosing Rio Tinto from a competitive pool including China's BYD, France's Eramet, and South Korea's Posco. Rio Tinto's proprietary direct lithium extraction (DLE) technology provided the decisive advantage, offering faster and more environmentally friendly operations compared to traditional evaporation methods. The DLE approach eliminates brine evaporation requirements while accelerating production timelines and reducing environmental impact.

Meanwhile, Rio Tinto's Rincon plant in Argentina serves as a demonstration and pilot facility for Chilean operations since both brine deposits share similar chemical compositions. This existing operational experience provides technical validation and reduces development risks for the Altoandinos project. Rio Tinto will assume complete operational responsibility while financing the project through financial operation and contributing to pre-feasibility study expenses.

Massive Resource Scale Supports 75,000 Tonne Annual Production

However, the Altoandinos salt flat contains substantial lithium resources exceeding 15 million tonnes of lithium carbonate equivalent with production capacity reaching 75,000 tonnes annually according to Enami projections. This production scale positions the project among global lithium industry leaders while supporting Chile's strategic objectives for lithium sector development. The resource magnitude justifies the $3 billion investment commitment from both partnership participants.

Therefore, the project timeline remains under development with no specific operational start date announced pending pre-feasibility study completion and regulatory approvals. The comprehensive development approach ensures technical optimization while addressing environmental and social considerations essential for sustainable lithium extraction. Rio Tinto's operational expertise combined with Enami's local knowledge creates optimal conditions for successful project implementation.

Strategic Expansion Reinforces Chile Lithium Market Leadership

Furthermore, the Altoandinos partnership follows Rio Tinto's recent selection by Chilean copper giant Codelco for the Maricunga salt flat exploration, representing Chile's second-largest undeveloped lithium deposit. This dual partnership positioning demonstrates Rio Tinto's strategic commitment to Chilean lithium development while reinforcing Chile's global lithium market leadership. The concurrent projects create synergies for technology deployment and operational efficiency.

As a result, Chile strengthens its position as the world's premier lithium jurisdiction through strategic partnerships with established international miners possessing advanced extraction technologies. The public-private partnership model enables state participation in resource development while leveraging private sector expertise and capital. This approach maximizes economic benefits while maintaining national control over strategic mineral resources essential for global energy transition.

The Metalnomist Commentary

Chile's selection of Rio Tinto for both the Altoandinos and Maricunga lithium projects demonstrates sophisticated resource development strategy that prioritizes advanced extraction technology and environmental sustainability over purely financial considerations. The emphasis on direct lithium extraction capabilities reflects Chile's commitment to maintaining global lithium leadership through technological innovation, particularly important as competition intensifies from emerging producers in Argentina, Australia, and other jurisdictions seeking market share.

Chile Receives High Interest in Lithium Project

In a significant development for the global lithium market, Chile's national mining company, Enami, has garnered substantial investor interest in its Salares Altoandinos lithium project located in the northern Atacama region. The company reported receiving 12 expressions of interest from companies and consortia across eight different countries, eager to form a joint venture with Enami and finance the initiative.

The interested parties include Axionit from Russia; Besalco and Errazuriz Group – IBC from Chile; BTR Consortium, BYD, and CNRG from China; Eramet from France; LG Energy Solution and Posco from South Korea; Rio Tinto from Australia; Summit Nanotech – HATCH from Canada; and Tecpetrol from Argentina.

Enami will assess the proposals by August 19 to ensure they meet the request for information requirements, after which negotiations with selected companies will commence.

Enami, which supports small and medium-sized mining operations in Chile, is investing $10.5 million in exploring the Altoandinos region, with a focus on the Aguilar, La Isla, and Grande salt flats. The initial exploration results have been described as "promising," with further exploration set to resume in September to better define the project's resources and reserves.

This move to attract private investment in the Altoandinos project aligns with Chile's national lithium strategy, which aims to double the country’s lithium production over the next decade.