St George Mining has delivered its most impressive drill results yet at the Araxá Rare Earths and Niobium Project, revealing a new record intercept of 207 metres of continuous high-grade mineralisation from surface. These findings bolster the case for a straightforward open-pit operation and reinforce Araxá’s status as South America’s largest, highest-grade carbonatite-hosted rare earth resource.
- Record 207m continuous mineralisation from surface
- Rare earths grades up to 30% TREO and niobium up to 6% Nb2O5
- Multiple thick intercepts exceeding 150m support open-pit mining potential
- Upcoming Mineral Resource Estimate update scheduled for this quarter
- Strategic dual commodity focus amid geopolitical supply concerns
Record Intercept Sets New Benchmark at Araxá
St George Mining (ASX:SGQ) has unveiled its most spectacular drill results to date from the Araxá Rare Earths and Niobium Project in Brazil, hitting a new record of 207 metres of continuous mineralisation from surface. This intercept, along with numerous others exceeding 150 metres thick, features rare earth oxide grades (TREO) reaching as high as 30% and niobium oxide (Nb₂O₅) up to 6%, underscoring the project's exceptional scale and grade.
Executive Chairman John Prineas highlighted the significance of these near-surface, high-grade intercepts, noting their potential to underpin a simple, cost-effective open-pit mining operation. Unlike many rare earth projects burdened by deep overburden or complex underground extraction, Araxá’s mineralisation starts right at surface, reducing pre-strip requirements and accelerating development timelines.
Dual Commodity Strength Enhances Project Appeal
The Araxá Project’s dual focus on rare earths and niobium, two critical metals in global supply chains, adds strategic value. Niobium, essential for high-strength steel and emerging technologies, lacks domestic production in both China and the US, making Araxá’s world-class niobium resource particularly timely amid ongoing geopolitical tensions. The project’s location adjacent to CBMM’s established niobium mine further validates its geological credentials.
Recent drilling has extended the known mineralised footprint by up to 140 metres north and deepened areas beyond the current Mineral Resource Estimate (MRE), supporting potential resource upgrades. The drilling density, with many holes spaced at 40 metres, aims to elevate confidence levels in the resource classification, essential for mine planning and economic studies.
Resource Upgrade and Economic Studies on Horizon
The latest assays will feed into an updated MRE expected this quarter, which will guide subsequent development workstreams. St George anticipates releasing the resource upgrade in the coming weeks, followed by economic studies throughout the remainder of the year. These studies will assess the viability of a straightforward open-pit operation capitalising on the thick, high-grade mineralisation from surface.
The March 2026 resource upgrade already positioned Araxá as South America’s largest and highest-grade carbonatite-hosted rare earth resource, with a combined measured and indicated resource of nearly 30 million tonnes at 4.56% TREO and 0.75% Nb₂O₅. The current drilling campaign promises to add further scale and confidence to this base.
Infrastructure, Government Support, and Environmental Considerations
Located in Minas Gerais, Brazil, the Araxá Project benefits from proximity to existing niobium mining infrastructure and a skilled workforce. St George has secured government backing for expedited approvals and assembled an experienced local team to navigate regulatory and environmental requirements. However, some areas within the project are classified as legal reserves or preservation zones, requiring ongoing engagement with authorities to manage environmental risks.
The project’s royalty arrangements include sliding scale net smelter return payments to former owners and government royalties, which will factor into economic assessments. While these introduce some regulatory complexity, they are typical for mining operations in the region.
Analyst and Market Focus Ahead
With St George’s recent $60 million capital raise and appointment of Worley for feasibility studies, the Araxá Project is rapidly advancing toward development. The combination of record drill results, strategic commodity exposure, and robust infrastructure support positions Araxá as a rare earth and niobium project to watch closely. How the company translates these thick, high-grade intercepts into a viable mining operation will be critical for investors and the broader critical minerals sector.
Bottom Line?
St George’s record drill results at Araxá strengthen the project’s development potential, but upcoming resource updates and economic studies will be pivotal in confirming its path to production.
Questions in the middle?
- How will the upcoming Mineral Resource Estimate update affect Araxá’s overall resource size and classification?
- What economic parameters will govern the feasibility of a simple open-pit operation given the royalty and environmental constraints?
- How might geopolitical tensions influence demand and pricing for niobium and rare earths from Araxá?