Mount Ridley Mines has unveiled exceptional scandium grades from its Phase 1 re-assay program at Grass Patch, revealing a new mineralised zone 13 kilometres beyond the existing resource boundary and highlighting significant untapped potential.
- Phase 1 re-assay confirms scandium grades above current resource average
- New high-grade scandium zone identified 13km southwest of Block 1
- 3,271 historical drill samples re-assayed with more than 14,000 pending
- Results to feed immediate resource model update and potential upgrade
- Scandium supply constraints heighten strategic value of Mount Ridley resource
Phase 1 Re-assay Reveals Superior Scandium Grades and New Mineralised Zone
Mount Ridley Mines Ltd (ASX:MRD) has confirmed a substantial expansion to its scandium mineralisation footprint at the Grass Patch Project in Western Australia, following the completion of Phase 1 of its re-assay program. The company re-analysed 3,271 historical drill pulp samples, uncovering scandium grades significantly exceeding the current Block 1 resource average of 91.8 ppm Sc2O3. Notably, intercepts such as 9 metres at 152.89 ppm Sc2O3 and 13 metres at 137.61 ppm Sc2O3 from shallow depths underscore the exceptional tenor of this newly defined mineralisation.
Untested 13km Strike Extension Unveils Broader Mineralised System
Perhaps most striking is the identification of a new high-grade scandium zone approximately 13 kilometres southwest of the established Block 1 Mineral Resource Estimate (MRE). This corridor, previously untested for scandium and other critical minerals, reveals that the Grass Patch Complex’s mineralised system extends well beyond existing boundaries. The highest grades cluster at the southwestern extremity, suggesting mineralisation intensifies away from the known resource rather than diminishing; a pattern that significantly amplifies the exploration upside for the project.
Capital-Efficient Resource Growth Strategy Leveraging Historical Data
Mount Ridley’s approach capitalises on its extensive historical drilling database exceeding 70,000 metres, much of which predates scandium’s rise as a critical mineral. By re-assaying previously untested drill pulps, the company avoids the cost and lead time of new drilling while rapidly enhancing its geological dataset. With approximately 14,000 additional pulps available for future phases, this strategy offers a low-cost pathway to potentially substantial resource expansion and upgrading, pending technical evaluation and resource modelling.
Strategic Importance of Scandium Amid Global Supply Constraints
Scandium’s classification as a critical mineral by Australia, the US, and the EU is underscored by its scarce global production, predominantly concentrated in China and Russia. Recent Chinese export licensing restrictions have tightened supply to Western markets, intensifying demand pressures across sectors such as aerospace alloys, solid oxide fuel cells, and additive manufacturing. Against this backdrop, Mount Ridley’s sizeable scandium resource in a geopolitically stable jurisdiction positions it as a potential key supplier to allied markets.
Next Steps Focus on Resource Model Update and Phase 2 Re-assays
The company plans to incorporate Phase 1 assay results immediately into its resource model, targeting an update and potential upgrade of the current JORC (2012) Inferred Mineral Resource at Grass Patch. Concurrently, Phase 2 is being scoped to prioritise the 13km untested strike corridor, leveraging the remaining 14,000 historical pulps. The timing and scale of subsequent field programs will hinge on these evaluations, setting the stage for a potentially transformative expansion of Mount Ridley’s critical minerals footprint.
Bottom Line?
Mount Ridley’s discovery of a high-grade scandium zone well beyond its current resource boundary could materially reshape its project’s scale, but the full impact hinges on forthcoming assay phases and resource modelling.
Questions in the middle?
- How will Phase 2 re-assay results influence the scale and classification of the Grass Patch resource?
- What exploration strategies will Mount Ridley deploy to test the 13km untested strike corridor beyond historical drilling?
- How might evolving global scandium supply constraints affect the commercial viability and strategic partnerships for Mount Ridley?