Mantle Minerals Uncovers Nine New Drill Targets at Yule River Project
Mantle Minerals has identified nine priority drill targets at its Yule River Project following detailed gravity and passive seismic surveys, setting the stage for a planned drilling campaign in the second quarter of 2026.
- Completion of high-resolution gravity and passive seismic surveys
- Identification of nine priority drill targets spanning multiple mineralisation styles
- Discovery of non-magnetic gravity anomalies undetectable by magnetics alone
- Phase 1 drilling program planned for Q2 2026, pending native title access
- Project located in a geologically prospective area near Port Hedland
Advanced Geophysical Surveys Refine Exploration Targets
Mantle Minerals Ltd (ASX:MTL) has announced significant progress at its Yule River Project in Western Australia, following the completion of high-resolution gravity and passive seismic (HVSR) surveys. These surveys have provided a clearer picture of the bedrock architecture beneath transported cover, a critical factor in exploring the complex geology of the Mallina Basin.
The Yule River Project, situated approximately 35 kilometres west of Port Hedland, is considered highly prospective for a range of mineralisation styles including Volcanic Hosted Massive Sulphides (VHMS), orogenic gold, and magmatic nickel-copper-platinum group elements (Ni-Cu-PGE). The recent geophysical work has identified multiple discrete gravity anomalies, some of which are non-magnetic and would have been missed by traditional magnetic surveys.
Nine Priority Drill Targets Identified
The integration of new gravity and HVSR data with historical aeromagnetic information has led to the identification of nine priority drill targets, labelled YRG1 through YRG9. These targets span a variety of mineralisation models, including potential hematite-rich VHMS lenses, gold-bearing sulphides, and magmatic Ni-Cu mineralisation. Notably, some targets are associated with gravity highs but lack magnetic signatures, suggesting new exploration avenues beyond conventional magnetic targeting.
Among these, targets YRG1, YRG3, YRG5, and YRG6 have been earmarked for immediate focus in the upcoming Phase 1 drilling program. This program aims to test the structural and mineralogical characteristics of these anomalies to assess their economic potential.
Drilling Plans and Access Challenges
Mantle Minerals is preparing to submit a Program of Work for the Phase 1 drilling, with plans to commence drilling in the second quarter of 2026. However, the company has highlighted ongoing challenges in securing access agreements with the relevant Native Title parties. These negotiations are critical to progressing the drilling timeline and remain subject to heritage survey scheduling and formal access arrangements.
Non-Executive Director Robert Mosig emphasised the importance of the new geophysical data, stating that it has transformed the Yule River Project from a conceptual greenfields opportunity into one with multiple well-defined drill targets. He noted that the integrated dataset provides a strategic advantage in targeting mineralisation beneath cover, a notoriously difficult exploration environment.
Strategic Importance Within the Pilbara Region
The Yule River Project sits within a geologically complex zone where the Scholl Shear Zone and Yule River Shear Zone converge, a setting analogous to the nearby Hemi Gold Deposit discovered by De Grey Mining. Historical exploration by Western Mining Corporation in the early 1990s included drilling that intersected alteration zones indicative of VHMS feeder systems, reinforcing the prospectivity of the area.
Mantle Minerals’ broader portfolio includes other strategically located projects in the Pilbara and Kimberley regions, focusing on battery and base metals. The company’s systematic, technically driven approach aims to unlock value in these underexplored terrains.
Bottom Line?
As Mantle Minerals prepares to drill its newly defined targets, the success of native title negotiations will be pivotal in unlocking the Yule River Project’s potential.
Questions in the middle?
- How will native title access negotiations impact the timing and scope of the drilling program?
- What are the implications of the newly identified non-magnetic gravity anomalies for future exploration strategies?
- Could the integration of gravity and HVSR data at Yule River set a precedent for exploration in similarly covered terrains?
