Highlights

  • St George Mining expanded its Araxá mineral resource estimate in August 2026.
  • Measured and Indicated material now accounts for approximately 68% of the reported resource.
  • The company’s October presentation reported A$86.2 million cash at 30 September 2026.
  • Pilot-scale beneficiation work and project development studies remain important milestones.
  • Permitting, metallurgy and funding requirements remain relevant to potential development.

St George Mining Limited (ASX:SGQ) develops critical minerals projects in Brazil and Western Australia, with its 100%-owned Araxá niobium and rare earths project in Minas Gerais at the centre of its current program. The company’s 2026 disclosures detail a larger mineral resource, metallurgical testing and preparatory work for a potential mining operation. St George Mining (ASX:SGQ) also presented the project at the IMARC conference in Sydney on 27 October 2026. The company appears on the supplied gainers list, although no specific cause for the move is established.

Araxá Resource Expansion Provides a Broader Technical Base

On 11 August 2026, St George Mining (ASX:SGQ) reported an Araxá mineral resource estimate of 111.2 million tonnes grading 3.57% total rare earth oxides (TREO) and 0.57% niobium pentoxide, using a 2% TREO cut-off. Total resource tonnage increased 57% from the March 2026 estimate. The Measured and Indicated component reached 75.2 million tonnes, an increase of 155%, while the Inferred component stood at 36.0 million tonnes.

The resource contains approximately 3.98 million tonnes of TREO, including 760,000 tonnes of neodymium-praseodymium oxides, alongside 630,000 tonnes of niobium pentoxide. East Araxá remains outside the estimate, which is a resource rather than an ore reserve.

Pilot Testing and Processing Studies Move Forward

In a 2 September 2026 announcement, St George Mining (ASX:SGQ) said a pilot beneficiation study had commenced at CIT-SENAI using approximately nine tonnes of near-surface saprolite material. The program includes locked-cycle flotation testing to assess recovery and concentrate quality. Further tests will examine ferroniobium and rare earth intermediate products.

The company expected results from the beneficiation study in the fourth quarter of 2026. Construction of a separate pilot plant had also commenced after relevant permits were received.

Project Preparation and Updated Funding Position

St George Mining (ASX:SGQ) reported in August that environmental permitting work had begun for the proposed Araxá development. Its October conference materials outlined access to regional transport infrastructure and an established mining services workforce, while identifying project studies and approvals as ongoing workstreams. The company has appointed Worley as a feasibility technical adviser.

The 27 October presentation reported cash of A$86.2 million at 30 September 2026. The earlier August investor materials presented A$98.2 million pro forma cash. The October update also stated that Hancock Prospecting held 10.3% of the company. Cash resources support ongoing work but do not, by themselves, establish that full mine construction is financed.

Development Uncertainties Still Require Attention

The transition from a resource estimate to a producing operation requires additional technical and commercial evidence. For St George Mining (ASX:SGQ), important considerations include metallurgical recoveries at scale, feasibility outcomes, environmental and tenure approvals, land access, Capital requirements and execution schedules. Company milestones remain subject to uncertainty.

Key Insights

The 2026 expansion of the Araxá resource and the start of pilot-scale processing studies mark identifiable advances in St George Mining’s development program. Its October presentation also updated the cash position. Nevertheless, resource size and technical progress should be distinguished from a completed feasibility assessment, final development decision or commercial production. St George Mining (ASX:SGQ) remains exposed to the normal uncertainties of a mineral project under evaluation.