St George Mining Posts Thickest High-Grade Intercept Yet at Araxá—A Potential Tier-1 Western REE Asset in the Making?

Dec 8, 2025

Highlights

  • St George Mining (ASX: SGQ) delivered its best intercept yet at Araxá: 115.65m @ 3.34% TREO & 0.34% Nb₂O₅ from surface, with zones exceeding 6–10% TREO—strengthening the case for a major resource upgrade.
  • Araxá hosts South America's largest high-grade carbonatite REE resource (40.6 Mt @ 4.13% TREO) in a tier-one jurisdiction, offering Western investors a rare alternative to Chinese-dominated supply chains.
  • Key de-risking milestones ahead include metallurgy results, conversion of Inferred to Indicated resources, and preliminary economics—critical for attracting institutional capital to this high-potential, pre-revenue project.

St George Mining (opens in a new tab) (ASX: SGQ) has reported its thickest and highest-grade rare earth and niobium intercept to date at the 100%-owned Araxá Project in Minas Gerais, Brazil. Hole AXDD016 delivered 115.65m from surface at 3.34% TREO and 0.34% Nb₂O₅, including zones running above 6–10% TREO.

Two additional holes—AXDD012 and AXDD013—returned 100.1m @ 3.96% TREO and 79.7m @ 3.69% TREO, respectively, all from surface. The company now has 32 holes awaiting assays, and drilling continues 24/7.

These intercepts substantiate the continuity of Araxá’s supergene mineralization and strengthen the case for a major upgrade to the project’s 40.6 Mt @ 4.13% TREO resource—already the largest high-grade carbonatite REE resource in South America.

Why This Matters for Investors

For a Western-world REE pipeline increasingly constrained by Chinese control, Araxá stands out. Brazil’s jurisdictional strength, proximity to CBMM’s world-leading niobium complex, and government-backed permitting pathways give the project a rare alignment of grade + scale + geopolitics.

If the current drilling successfully converts large areas of the MRE from Inferred to Indicated, St George can advance to Ore Reserve estimation and economic studies—essential de-risking milestones for institutional capital.

Critical Questions for Investors

While the results are exceptional, several unknowns remain:

  • Metallurgy: High-grade is only half the battle. How complex will monazite/pyrochlore processing be at scale?
  • Capex/Infrastructure: Brazil offers advantages, but will costs compete with Chinese or African peers?
  • Offtake Landscape: Can St George secure Western-aligned offtake, or will Chinese buyers attempt to pre-empt supply?
  • NSR Royalties: Sliding-scale NSR up to 10.5% on REEs and niobium may influence project economics.

Market View: SGQ Shares Still a Speculative Build-Out Story

SGQ trades in a strong uptrend on rising volumes (latest ASX data not included in file). From a technical lens, the stock has room to consolidate before another leg higher if assays continue the pattern. Fundamentally, Araxá is pre-revenue but globally significant. The value inflection will come once:

  1. Metallurgy is released,
  2. Indicated resources rise, and
  3. preliminary economics show competitive margins.

Until then, St George remains a high-potential, high-risk exploration-development equity.

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By Daniel

Inspired to launch Rare Earth Exchanges in part due to his lifelong passion for geology and mineralogy, and patriotism, to ensure America and free market economies develop their own rare earth and critical mineral supply chains.

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