West Cobar Metals reports promising metallurgical testwork supporting a low-cost heap leach processing pathway at its Salazar Critical Minerals Project, highlighting strong recoveries of high-value rare earths including dysprosium and terbium.
- Metallurgical testwork confirms heap leach suitability using sulfuric acid
- Salazar hosts a large-scale rare earth resource with elevated heavy rare earths
- Strong recoveries of critical magnet rare earths dysprosium and terbium
- Scoping study planned for 2026 to define development economics
- Company engaging strategic partners and government funding opportunities
Metallurgical Breakthrough at Salazar
West Cobar Metals Limited (ASX:WC1) has unveiled encouraging results from its latest metallurgical testwork at the Salazar Critical Minerals Project in Western Australia. The company’s recent work demonstrates that sulfuric acid leaching can achieve strong recoveries of rare earth elements (REEs), particularly the heavy magnet rare earths dysprosium (Dy) and terbium (Tb), which are critical for permanent magnet applications in electric vehicles and renewable energy technologies.
This breakthrough supports a potentially low-cost heap leach processing route, a simpler and more capital-efficient method compared to traditional processing techniques. Preliminary heap leach tests confirmed favourable agglomeration, permeability, and percolation characteristics, all essential for scalable heap leach operations.
Strategic Resource Composition
The Salazar Project boasts a substantial resource base, with 230 million tonnes at 1,178 ppm total rare earth oxides (TREO), including a significant 44 million tonnes at 1,239 ppm TREO in the indicated category. Notably, the deposit contains an elevated proportion of heavy rare earth elements, with Dy and Tb comprising 3.3% of TREO, contributing disproportionately to the project’s economic value. These elements are in tight global supply, predominantly controlled by Chinese producers, positioning Salazar as a strategically important asset for secure, traceable supply chains outside China.
In addition to rare earths, the project hosts valuable co-products such as scandium, titanium dioxide, gallium, and alumina, broadening its commercial appeal. Scandium, for example, has niche applications in aerospace and aluminium alloys, while gallium is critical for semiconductor manufacturing.
Pathway to Development
West Cobar Metals is advancing its metallurgical program with ongoing column leach testing to simulate heap leach conditions at scale, alongside optimisation of acid consumption and agglomeration parameters. The company aims to produce a mixed rare earth carbonate (MREC) product as a priority, which is a market-preferred intermediate for downstream processing.
A scoping study is slated for calendar year 2026, which will incorporate preliminary mine design, production scheduling, capital and operating cost estimates, and an economic evaluation to define the project’s development pathway. Concurrently, West Cobar is engaging with potential strategic partners and exploring government funding opportunities in Australia and the United States, reflecting the geopolitical importance of critical minerals supply.
Market and Strategic Implications
Managing Director Matt Szwedzicki emphasised the value uplift from the heavy rare earth enrichment, noting that Dy and Tb account for approximately 25% of the project’s basket value based on current Shanghai Metals Market pricing. This premium positioning enhances the project’s attractiveness to offtake partners and investors seeking exposure to high-demand magnet rare earths.
While the metallurgical results are preliminary and require further optimisation, the confirmation of heap leach suitability marks a significant step towards a scalable, cost-effective development. The project’s proximity to existing infrastructure in Western Australia further supports its economic potential.
Bottom Line?
As West Cobar Metals moves toward its 2026 scoping study, the market will watch closely for how these metallurgical advances translate into commercial viability and strategic partnerships.
Questions in the middle?
- How will ongoing metallurgical optimisation impact the final processing costs and recovery rates?
- What terms and timelines might West Cobar secure with potential strategic partners and government funding bodies?
- How will global rare earth market dynamics, especially for heavy rare earths, influence Salazar’s development prospects?