Argentina's New Copper-Gold Discovery: A Turning Point in Latin America's Critical Minerals Race

From Chile to Argentina: The Expansion of South America's Mining Landscape

For a long time, Chile and Peru have dominated Latin America's copper supply, while Argentina’s mining role has been relatively peripheral. However, the latest drilling results from NGEx Minerals at the Lunahuasi project in San Juan Province, northern Argentina, are rewriting this paradigm. The Jupiter zone intersected 10 meters of 0.88% copper, 3.14 g/t gold, and 12.2 g/t silver, including a 7.6-meter exceptionally high-grade interval (18.84% copper, 5.54 g/t gold, 336.7 g/t silver). The Saturn zone also reported wide, thick mineralization, such as hole DPDH072 intersecting 34 meters of 1.43% copper, 1.8 g/t gold, and 40.2 g/t silver. These data make Lunahuasi one of the highest-grade undeveloped copper-gold-silver deposits globally.

This discovery is not an isolated case. In recent years, Canadian and Australian exploration companies have identified several large copper-gold projects in Argentina's Puna plateau and Andean region, such as Josemaria, Los Azules, and Mara. The high-grade results at Lunahuasi further confirm that Argentina has the potential to become a new node in the global supply of critical minerals.

Why Argentina? Resource Repricing Under the Energy Transition

The global shift toward clean energy is reshaping the demand structure for commodities. Copper, as a key metal for electrification and infrastructure, has strong demand prospects; gold and silver serve both as safe-haven assets and for industrial uses. Argentina’s mining potential has long been overlooked, mainly due to policy uncertainty and inadequate infrastructure. However, in recent years, the government has implemented the Large Investment Incentive Scheme (RIGI), offering tax and tariff benefits for mining projects and streamlining approval processes. The drilling permits NGEx obtained in mid-2026 and ongoing exploration support are direct reflections of this policy improvement.

More importantly, copper grades in Chile and Peru are declining, while social and environmental conflicts have delayed new projects. Capital is beginning to seek new destinations, and Argentina’s high-grade deposits are precisely filling this gap. The exceptionally high-grade interval (18.84% copper) at the Jupiter zone in Lunahuasi is extremely rare globally, implying lower extraction costs and higher profit margins, making it highly attractive to mining investors seeking high returns.

Industrial and Trade Impact: A New South American Pivot in the Copper Supply Chain

If the Lunahuasi project is successfully developed, it will have a substantial impact on global copper trade. Currently, the global copper concentrate market is highly dependent on Chile (approximately 28%) and Peru (approximately 10%), posing a high supply concentration risk. Argentina’s entry will effectively diversify supply sources and enhance South America’s overall bargaining power in the global copper market.From an industrial perspective, the recovery of gold and silver as by-products will further optimize project economics. Argentina currently has no large-scale modern copper mines in production, but Lundin Mining's Josemaria project (in an adjacent area) has entered the construction phase, with production expected in 2027. If NGEx's Lunahuasi enters the feasibility study phase, it will attract more supporting infrastructure investment, including mine roads, power, and port facilities, thereby reducing mining costs across the entire region.

For China, Argentina's copper mine development holds strategic significance. China is the world's largest copper consumer and is actively deploying its presence in Latin American mining through the Belt and Road Initiative and resources-for-loans models. Although NGEx is a Canadian company, its project may attract Chinese capital participation (with precedents such as Chinalco and Minmetals having similar cooperation).

Investment flows: Risk appetite returns to high-grade deposits

Although NGEx's stock price fell 2% to CAD 23.96 (market cap CAD 5.2 billion) on the day of the announcement, the stock's 12-month range of CAD 16.35-32.41 indicates market expectations of volatility for such early-stage exploration projects. Capital is flowing from mature mines to greenfield exploration. In the first half of 2026, the global copper exploration budget increased by 15% year-on-year, with Argentina attracting approximately 8% of the share, double the 3% from five years ago.

For investors, Lunahuasi's high grade means the project has strong resilience even in a copper price downturn. Key risks lie in Argentina's macroeconomic environment: inflation still exceeds 60%, and the peso faces heavy devaluation pressure, but the RIGI framework locks in some risks through dollar pricing and free convertibility clauses. In 2025, Milei government's economic reforms showed initial results, lowering sovereign risk premiums and creating a more favorable environment for mining investment.

Regional competition and cooperation: The possibility of a Chile-Argentina cross-border mining belt

The Lunahuasi project is located about 150 km east of the Chilean border, belonging to the eastern extension of the same Andean metallogenic belt. Chile's state-owned Codelco and private mining companies have long been interested in this area but were deterred by border disputes and Argentina's historical policies. Now, improved bilateral relations (mining cooperation dialogue was restarted in 2025) have made cross-border infrastructure sharing (such as power lines and ports) possible. If regional synergy is achieved, it could form a "copper corridor" from northern Chile to northwestern Argentina, significantly reducing logistics costs and enhancing South America's overall competitiveness.

Long-term outlook: Can Argentina become the next Chile?

Forecast for the next 5-10 years: Argentina's copper production could grow from nearly zero to 500,000-800,000 tons (mainly driven by projects such as Josemaria, Los Azules, and Lunahuasi), accounting for 2-3% of global copper supply.Forecasting the next 5-10 years, Argentina's copper production will grow from nearly zero to 500,000–800,000 tons (mainly driven by the advancement of projects such as Josemaria, Los Azules, and Lunahuasi), accounting for 2–3% of global copper supply. This is not enough to shake Chile's dominance, but it will reshape the mining political landscape of South America. Argentina will transition from an "agricultural exporter" to a "mining-agriculture dual-engine" economy, using copper revenues to improve its balance of payments.

Longer-term challenges include environmental compliance, indigenous community consultations, and infrastructure financing. However, the high-grade drilling results at Lunahuasi send a clear signal: the global race for critical minerals has extended to Argentina, and the underground wealth of this land is only beginning to be revealed.

--- *This article is based on public data and industry analysis and does not constitute investment advice.*