Incomplete IP Survey Leaves Key Questions on Oonagalabi’s Mineral Potential
Litchfield Minerals has unveiled compelling new geophysical data from its first phase IP survey, revealing multiple extensive sulphide mineralisation targets within the Oonagalabi system. The findings suggest a large, vertically extensive intrusive-related mineral corridor ripe for further exploration.
- First phase IP survey extends chargeability anomaly by 450m northeast
- Discovery of two +500m sub-parallel chargeability trends adjacent to VT2
- Evidence supports a large-scale, vertically extensive sulphide system
- VT2 prospect remains blind at surface but shows strong geophysical signatures
- Next steps include completing IP coverage, ground EM surveys, and targeted drilling
Expanding the Oonagalabi Mineral Horizon
Litchfield Minerals Limited has released promising results from the initial phase of its Induced Polarisation (IP) survey across the VT2 and Northeast Oonagalabi trend, extending through to the Bomb Diggity intrusion. This geophysical program, comprising eight lines each approximately 1.5 kilometres long, has successfully deepened the understanding of the Oonagalabi system’s structural and mineralisation framework.
The new data notably extends the known chargeability anomaly of the Oonagalabi Main Zone by 450 metres to the northeast, while also identifying two substantial, over 500-metre-long, sub-parallel chargeability anomalies adjacent to the VT2 conductor. These anomalies are interpreted as zones of disseminated sulphides within the Oonagalabi Formation, suggesting a mineralised corridor that wraps around the nose of the Oonagalabi Anticline and remains open for further expansion.
VT2, A Blind but Promising Prospect
The VT2 prospect, despite lacking surface expression, exhibits a geophysical signature consistent with a sulphide-rich system. The IP survey delineated large zones of low resistivity, indicative of interconnected semi-massive to massive sulphide accumulations extending to depth. This aligns with previous drilling results, such as the semi-massive sulphides intersected in hole OGRC011, which may represent higher-grade feeder structures.
Importantly, the VT2 anomalies are not isolated but appear to be part of a larger intrusive-related sulphide system. The new 3D inversion of VTEM magnetic data reveals key magnetic bodies extending nearly 900 metres below surface, underscoring the vertical extent and preservation of the mineralised system.
Strategic Next Steps and Exploration Outlook
With roughly half of the planned IP survey completed due to timing constraints, Litchfield Minerals intends to return for the remaining lines in the next field window. Complementary ground electromagnetic (EM) surveys are scheduled to commence in late November 2025, aimed at refining conductor models and enhancing drill targeting precision.
Managing Director Matthew Pustahya emphasised the transformative nature of these results, highlighting the convergence of multiple geophysical datasets and drilling evidence pointing to a large, preserved mineral system. The company’s rapid, data-driven approach aims to compress the timeline from concept to decision, building confidence ahead of targeted drilling campaigns.
Overall, these findings position the Oonagalabi corridor as a compelling exploration frontier with a growing pipeline of high-priority targets. The integration of IP, VTEM, DHEM, and drilling data continues to sharpen the geological model, setting the stage for potential material discoveries in this Northern Territory base metals project.
Bottom Line?
Litchfield’s evolving geophysical insights are setting the stage for a pivotal drilling phase that could redefine the scale of the Oonagalabi mineral system.
Questions in the middle?
- How will the completion of the remaining IP lines alter the current geological model?
- What are the implications of the deep, vertically extensive magnetic anomalies for resource potential?
- When can investors expect initial drilling results from the newly identified high-priority targets?
