St George Mining Limited (ASX: SGQ) (“St George” or the “Company”) has delivered a standout March 2026 quarterly update, highlighting rapid progress at its flagship Araxá Project in Brazil. The Company reported a major 75% upgrade to the Mineral Resource Estimate (MRE), continued drilling success, expanding downstream partnerships, strong government backing, and a robust cash balance of approximately $43 million as at 31 March 2026.
With rare earths and niobium becoming increasingly critical to clean energy, defence, infrastructure, and advanced manufacturing, St George appears well positioned to benefit from rising strategic demand.
Major Resource Upgrade Confirms Global Significance
The headline result from the quarter was the substantial upgrade of the Araxá resource.
St George announced a new JORC 2012 compliant MRE of:
- 70.91 million tonnes at 4.06% TREO
- 0.62% Nb₂O₅
- Based on a 2% TREO cut-off
This represents a 75% increase from the previous estimate and significantly strengthens the development potential of the Project.
The upgraded resource includes:
- Measured: 8.02Mt at 5.23% TREO and 1.06% Nb₂O₅
- Indicated: 21.46Mt at 4.31% TREO and 0.63% Nb₂O₅
- Inferred: 41.42Mt at 3.71% TREO and 0.52% Nb₂O₅
Importantly, Measured and Indicated resources increased by 218% to 29.49Mt, giving the Company a stronger base for future economic studies.
Table 1: Table presenting the Total JORC 2012 Mineral Resource Estimate (MRE) grade-tonnage summary based on a 2% TREO cut-off grade. [St George Mining Limited]
Araxá Ranked Among the World’s Leading Hard-Rock Rare Earth Deposits
The Company stated that Araxá now ranks among the world’s most significant carbonatite-hosted rare earth deposits outside China.
It sits alongside major global names such as:
- Lynas’ Mt Weld in Australia
- MP Materials’ Mountain Pass in the United States
This comparison is notable because these operations are among the largest producing rare earth mines outside China. Araxá’s combination of scale, grade and shallow mineralisation makes it increasingly attractive from a strategic supply perspective.
Shallow, Free-Digging Ore Could Support Lower-Cost Mining
One of the most compelling aspects of the Araxá Project is the geometry of the orebody.
St George reported that:
- High-grade mineralisation starts from surface
- Resource depth extends to approximately 100m–120m
- 100% of the top 100m lies within weathered profile material
- Ore is considered free-digging, reducing blasting requirements
This could potentially translate into lower mining costs, faster development timelines, and simpler open-pit operations.
Figure 1: 3D perspective view of the new Araxá MRE displaying TREO (%) grades, looking north-east. [St George Mining Limited]
Strong Drill Results Continue to Expand the Opportunity
Drilling continued during the quarter with three diamond rigs and one RC rig operating. Several exceptional results were announced, including the best intercept to date:
- 178.7m at 4.34% TREO and 0.75% Nb₂O₅ from surface
Other strong intersections included:
- 165.3m at 4.28% TREO and 0.61% Nb₂O₅
- 164.45m at 2.93% TREO and 0.39% Nb₂O₅
- 81.5m at 1.27% Nb₂O₅
These results were not fully included in the upgraded MRE, suggesting further growth potential may remain ahead.
Figure 2: Oblique section illustrating extensive drilling completed during the current campaign, with the most recent drill holes highlighted in red labels as reported in the ASX release dated 7 April 2026. [St George Mining Limited]
Why TREO Matters in Today’s Market
Total Rare Earth Oxides (TREO) are essential to many high-growth industries.
Applications include:
- Permanent magnets for EV motors and wind turbines
- Consumer electronics and hard drives
- Defence guidance systems
- Lighting, displays and phosphors
- Glass polishing and semiconductor finishing
- Batteries and energy storage
The global permanent magnet market alone is projected to grow from USD 51.8 billion in 2025 to USD 74.11 billion by 2031, highlighting strong long-term demand drivers.
For St George, a large TREO resource at Araxá may place the Company in a favourable position as Western nations seek diversified rare earth supply chains.
Figure 3: Rare earth uses infographic – EVs, turbines, defence, electronics
Niobium Demand Continues to Strengthen
Niobium remains one of the lesser-known but highly valuable critical minerals.
According to industry forecasts, the niobium market is expected to grow from 79.68 kilotons in 2025 to 103.18 kilotons by 2031, representing a CAGR of 4.4%.
Niobium is primarily used in:
- High-strength low-alloy steels
- Construction beams and bridges
- Automotive manufacturing
- Oil and gas pipelines
- Superconductors
- Battery technology
- Aerospace alloys
Even small niobium additions can improve steel strength by up to 30% while maintaining weldability.
Given Brazil’s dominant role in global niobium supply, Araxá’s location in Minas Gerais may provide St George with access to established mining expertise and infrastructure.
Processing Strategy Gains Momentum
The Company made significant progress toward future development by securing land suitable for processing facilities.
Key details include:
- 166 hectares acquired
- Located less than 2km from mining tenure
- Zoned for industrial and mining use
- Flat, cleared land
- Access to hydro-electric power, roads and rail
St George is also evaluating access to existing regional processing plants through lease, acquisition or commercial arrangements.
These initiatives may help accelerate the pathway to production.
Figure 4: Aerial Earth image of the Barreiro carbonatite complex highlighting the Araxá Project (red outline), alongside the neighbouring CBMM niobium operation and Mosaic phosphate mine. [St George Mining Limited]
Government Support Reduces Development Costs
The State of Minas Gerais granted St George a preferential tax regime covering certain development materials and equipment.
The exemption may reduce state goods tax costs of up to 18%, potentially lowering capital expenditure for pilot and commercial plant construction.
This level of government support often signals recognition of a project’s strategic and economic importance.
Strategic Partnerships Expand Downstream Potential
During the quarter, St George advanced several important collaborations:
- REalloys (USA): Extended alliance focused on potential rare earth offtake and refining.
- Boston Metal: Partnership to assess Molten Oxide Electrolysis technology for niobium products.
- Nanum Nanotecnologia: Working on cerium commercialisation and upgrading rare earth product mix.
- Tecnicas Reunidas (Europe): Testing RARETECH® processing technology and opening possible European market pathways.
These partnerships may reduce technical risk while expanding future customer options.
Figure 5: St George representatives at the Brazil-US Critical Minerals Forum. From left to right: Thiago Amaral (Director and Country Head, St George Brasil), Gabriel Escobar (Chargé d’Affaires, US Embassy Brasília), John Prineas, and Daniel Guimarães Medrado de Castro (Undersecretary of Investments Promotion and Value Chains, Minas Gerais State). [St George Mining Limited]
Strong Share Price Performance Reflects Market Interest
St George’s ASX performance has been exceptional:
- Last Price: $0.1325
- Day Change: +1.92%
- 1 Week: +6.00%
- 1 Month: +15.22%
- 2026 YTD: +33.84%
- Market Cap: $520.7 million
The one-year gain of 600% suggests investors have strongly re-rated the Company as Araxá advances.
Figure 6: Share price chart of St George Mining showing 12-month rise [St George Mining Limited]
Investors’ Outlook
St George Mining has rapidly evolved into one of the ASX’s more compelling critical minerals stories.
The Company now controls a globally significant project with scale, strong grades, shallow mineralisation, supportive government policy, expanding partnerships, and a healthy balance sheet. These factors create a strong platform for future growth.
Investors will likely watch for upcoming catalysts, including further resource upgrades, metallurgy results, feasibility milestones, processing agreements, and any movement toward offtake or development funding.
If management continues to execute effectively, St George may remain a standout emerging rare earths and niobium developer throughout 2026.
Disclaimer: This article is for informational purposes only and is based on publicly available announcements issued by St George Mining Limited. It does not constitute financial, investment, or legal advice, nor is it a recommendation to buy or sell any securities. Readers should conduct their own research and seek independent professional advice before making any investment decisions. Forward-looking statements involve risks and uncertainties, and actual outcomes may differ materially from expectations.
Last modified: April 28, 2026
