Audalia Resources has reported significant assay results from its recent infill drilling at the Medcalf vanadium-titanium-iron project in Western Australia, confirming consistent mineralisation and progressing towards an updated resource estimate.
- Infill reverse circulation drilling completed with 41 holes totaling 1,267m
- Significant vanadium, titanium, and iron assay results confirmed
- Medcalf Project located in the Lake Johnston greenstone belt, Yilgarn Craton
- Cube Consulting progressing updated Mineral Resource Estimate
- Metallurgical testwork shows strong recovery via magnetic separation
Exploration Progress at Medcalf
Audalia Resources Limited (ASX – ACP) has provided a detailed update on its Medcalf Project, a vanadium-titanium-iron deposit situated approximately 470 kilometres southeast of Perth near Lake Johnston in Western Australia. The recent infill reverse circulation (RC) drilling program, completed in April and May 2025, comprised 41 holes totaling 1,267 metres, designed to tighten the drill spacing to 40m by 40m across key prospects including Veusvius, Fuji, and Pinatubo.
The Medcalf Project lies within the southern end of the Archaean Lake Johnston greenstone belt, a geologically significant region known for its mineral potential. The mineralisation is hosted within a pyroxenite zone of the Medcalf sill, characterized by vanadiferous titanomagnetite mineralisation enriched through extensive weathering processes.
Significant Assay Results Confirm Consistency
Assay results from the infill drilling have been entered into the Medcalf drilling database and validated, revealing a consistent and significant presence of vanadium (V2O5), titanium (TiO2), and iron (Fe2O3) oxides. The mineralisation extends over a strike length of approximately 1,600 metres, with a width of 450 metres and a depth of about 35 metres, demonstrating strong geological and grade continuity suitable for resource estimation.
Drilling was conducted using industry-standard RC techniques, with high sample recovery rates and rigorous quality control measures, including the use of standards, blanks, and duplicates. The assays were processed by Intertek Laboratories using a lithium borate fusion followed by X-ray fluorescence analysis, ensuring reliable and representative data.
Towards an Updated Mineral Resource Estimate
Cube Consulting, an independent geological consultancy, is currently progressing an updated Mineral Resource Estimate for the Medcalf Project, expected to be completed within the month. This update will incorporate the latest drilling results and provide a refined understanding of the deposit’s size and grade, critical for advancing the project towards development.
Audalia holds 100% ownership of the Medcalf tenements, which are in good standing with no legal or environmental impediments. The project benefits from environmental approvals and is located in an area with manageable flora and fauna restrictions.
Metallurgical Insights Support Project Viability
Previous metallurgical testwork has demonstrated promising beneficiation results, with over 85% recovery of vanadium, titanium, and iron through magnetic separation. The process produces a concentrate containing approximately 50% total iron, 0.79% vanadium pentoxide, and 15% titanium dioxide, with a mass recovery of around 74%. Further pyrometallurgical processing steps, including magnetising roasting and shaking table upgrading, have been identified as effective for producing downstream products.
These metallurgical findings underpin the potential economic viability of the Medcalf Project by confirming that valuable elements can be efficiently extracted and concentrated.
Looking Ahead
With the updated Mineral Resource Estimate imminent, Audalia is poised to provide the market with a clearer picture of the Medcalf Project’s scale and quality. The consistent mineralisation and positive metallurgical results position the project as a noteworthy asset in the vanadium-titanium-iron sector, a market of growing strategic importance.
Bottom Line?
The upcoming resource update will be pivotal in defining Medcalf’s commercial potential amid rising demand for vanadium and titanium.
Questions in the middle?
- What will the updated Mineral Resource Estimate reveal about tonnage and grade?
- How will Audalia plan to advance the project towards development post-resource update?
- What are the potential market implications of Medcalf’s vanadium and titanium supply?