Red Metal’s Sybella rare earth project clears a key technical hurdle

Sybella heap-leach testing advances development case

Red Metal Limited (ASX:RDM) has reached an important technical checkpoint at its Sybella rare earth project near Mount Isa, with long-duration column tests supporting the company’s proposed heap-leach processing route. Tests on coarsely crushed Saprock and Transitional mineralisation produced neodymium and praseodymium extractions of up to 78%, while acid consumption and iron and aluminium impurity extraction remained comparatively low in the reported test work.

The tests ran for 120 to 140 days at ambient temperature using weak sulphuric acid. Results were broadly consistent across the -10 millimetre and -20 millimetre crush fractions, an outcome that may allow the study team to assess coarser crushing options rather than assuming a finer, potentially more expensive feed preparation route. Red Metal also reported that ion-exchange resin trials delivered roughly nine-fold enrichment of rare earth content while reducing impurities and simplifying the proposed flowsheet.

Sybella hosts a 4.795 billion-tonne Inferred Mineral Resource grading 302 parts per million neodymium-praseodymium oxides and 28 parts per million dysprosium-terbium oxides, according to the annual report. The resource begins at surface and the company describes the deposit as having a low to zero strip ratio. Those characteristics are potentially helpful for an open-pit and heap-leach concept, but the resource remains Inferred and the project has not yet reached a production or investment decision.

Pre-Feasibility Study sets the next project test

Red Metal has commissioned its maiden Pre-Feasibility Study with DRA Global, AMDAD Mining and The Core Group. The work will examine and cost the mine, heap-leach and processing operation, as well as supporting infrastructure, with the first robust economic assessment expected around the end of calendar 2026 or early 2027. A Definitive Feasibility Study is scheduled to begin in 2027.

Further work is still underway before that assessment is complete. Red Metal is testing purification settings aimed at producing a mixed rare earth carbonate sample, assessing heap height and conducting additional column tests on Fresh Granite mineralisation. Environmental desktop studies have also begun ahead of baseline monitoring. The coming study therefore has to convert promising laboratory performance into a mine plan, capital estimate and operating model.

Maronan distribution reshapes the financial result

Red Metal reported a consolidated profit of $19.17 million for FY2026, compared with a $12.42 million loss a year earlier. The headline improvement was dominated by a $25.53 million gain on losing control of Maronan Metals Limited (ASX:MMA), rather than by revenue from mining operations. Red Metal distributed 73.05 million Maronan shares to its shareholders in May and ended the year with 15.45 million shares, equal to approximately 4.91% of MMA, valued at $6.72 million at 30 June.

The retained MMA stake gives Red Metal a listed financial asset, but also leaves the company exposed to movements in MMA’s share price. Cash and cash equivalents stood at $4.46 million at year-end, down from $7.99 million, while net cash used in operating activities was $5.15 million, including $5.49 million spent on exploration and evaluation. The company also received $846,758 from the research and development tax incentive, $400,000 in government drilling grants and $3.06 million from exercising Red Metal options.

Exploration portfolio adds funded drilling options

Alongside Sybella, Red Metal is maintaining a wide exploration portfolio. Chalice Mining has committed to drill three basement targets across two Callabonna joint ventures within its first 12 months, while Artemis Resources (ASX:ARV) is expected to drill the Sharon Dam target in the Nullarbor region and may earn a 60% interest by spending $5 million over three years.

Other targets remain at earlier stages. Pernatty Lagoon drilling depends on a renewed access agreement with Native Title parties, potentially taking six months, while follow-up work at Pardoo, Pulkarrimarra, Three Ways and Lawn Hill depends on heritage approvals, rig availability or further study. The breadth of the portfolio offers several possible sources of news, but it also spreads a relatively modest cash balance across a large number of exploration commitments.