Morella Corporation’s final 2026 drilling results at Mt Edon reinforce broad rubidium mineralisation and reveal multiple higher-grade zones, advancing the project toward its maiden JORC Mineral Resource Estimate.
- Broad rubidium mineralisation confirmed across Sophie Prospect
- Higher-grade zones include assays up to 0.95% Rb2O
- Resource definition drilling supports mineralisation continuity
- Complete drilling dataset enables maiden JORC resource estimate
- Ongoing metallurgical testwork shows promising rubidium recoveries
Final Drilling Results Highlight Rubidium Potential
Morella Corporation Limited (ASX:1MC) has wrapped up its 2026 Reverse Circulation (RC) drilling program at the Mt Edon Project in Western Australia, delivering assay results that bolster confidence in the project's rubidium resource potential. The latest batch of assays, covering holes MER043 to MER049 within and adjacent to the Sophie Prospect, confirmed broad rubidium mineralisation and identified several higher-grade zones, including a standout 2m interval grading 0.95% Rb2O.
This drilling campaign not only reinforced the continuity of mineralisation within the core Sophie resource area but also extended the known mineralised pegmatite system southwards. The broad intercepts, such as 68m at 0.21% Rb2O in MER046 and multiple 13m to 27m higher-grade zones, demonstrate a robust and consistent rubidium footprint across the prospect.
Resource Definition and Metallurgical Progress
The comprehensive dataset from this drilling program now forms the foundation for Morella’s maiden JORC Mineral Resource Estimate (MRE), expected to provide the first quantitative assessment of the Mt Edon rubidium system's scale and grade. Managing Director James Brown emphasised the importance of mineralisation continuity and the emergence of higher-grade domains, which are critical for resource modelling and future development.
Complementing the drilling results, Morella continues metallurgical testwork in collaboration with Edith Cowan University, which has previously demonstrated rubidium extraction rates approaching 90%. This metallurgical progress is crucial given rubidium’s status as a critical mineral with limited global supply and concentrated production.
Lithium By-Product Potential and Strategic Positioning
Alongside rubidium, lithium mineralisation was consistently recorded throughout the Sophie Prospect drilling, hinting at a potential by-product opportunity that could enhance project economics. The mineralisation is hosted in microcline-bearing pegmatites, a style that supports both rubidium and lithium extraction.
Rubidium remains a rare and strategic metal used in advanced electronics, specialty glass, and defence applications. With global supply constrained and concentrated in few jurisdictions, Mt Edon positions Morella as a key player in Australia’s emerging critical minerals landscape.
Next Steps Toward Resource Definition
With all assay results now received, Morella is focused on delivering the maiden JORC Mineral Resource Estimate and advancing metallurgical studies to optimise processing pathways. The company’s strategic joint venture controlling 51% of the project, combined with near-surface mineralisation and established infrastructure access, lays a solid groundwork for further project evaluation and development.
While the true widths of mineralisation are yet to be determined and external assay verification remains pending, these results mark a significant milestone in unlocking Mt Edon’s critical mineral potential.
Bottom Line?
Morella’s comprehensive drilling dataset and encouraging metallurgical results set the stage for a landmark maiden resource estimate, but key questions on true mineralisation thickness and processing optimisation remain.
Questions in the middle?
- How will the maiden JORC Mineral Resource Estimate quantify the scale and grade of Mt Edon’s rubidium system?
- What impact could lithium by-product credits have on the project’s economic viability?
- How will ongoing metallurgical testwork influence processing strategies and project development timelines?