Litchfield Minerals Advances Oonagalabi Exploration with New Gravity Survey

• Commencement of 224-station ground gravity survey over Bomb Diggity magnetic anomaly
• Survey designed to detect dense, sulphide-rich intrusive bodies beneath cover
• Integration of gravity and magnetic data to enhance geological interpretation
• Survey results expected to inform drill targeting later in 2025
• Oonagalabi remains a strategic focus within Litchfield’s West Arunta portfolio

Strategic Gravity Survey Targets Intrusive Mineralisation

Litchfield Minerals Limited (ASX: LMS) has initiated a comprehensive ground gravity survey over its high-priority Bomb Diggity target within the Oonagalabi permit in Australia’s Northern Territory. This follows the magnetic anomaly’s discovery in December 2024 during a 50-metre spaced airborne magnetic survey, which highlighted Bomb Diggity as a compelling northeast-trending intrusive body within a significant regional structural corridor.

The gravity survey comprises 224 stations spaced at 100-metre intervals along 12 lines, each 200 metres apart, designed to provide detailed spatial coverage. This method is particularly effective at identifying density contrasts in the subsurface, which can indicate the presence of sulphide-rich mineralised intrusions often associated with base metals like copper and zinc.

Enhancing Geological Understanding Through Integrated Data

By combining gravity data with existing magnetic survey results, Litchfield aims to differentiate between mafic intrusions, alteration zones, and potentially mineralised bodies such as massive sulphide accumulations. This integrated geophysical approach is critical for refining the geometry and fertility of buried intrusions, which are otherwise concealed beneath surface cover.

Managing Director and CEO Matthew Pustahya emphasised the company’s methodical approach: "The gravity survey over the Bomb Diggity target represents another important step in advancing our understanding of the Oonagalabi area, which continues to show signs of being a fertile and underexplored mineral system. Each dataset brings us closer to revealing the scale and structure of what we’re dealing with, and we’re excited by what’s to come."

Implications for Future Exploration and Drilling

The survey results, expected later this year, will be pivotal in guiding Litchfield’s drill targeting decisions. Given the potential link between the Bomb Diggity intrusive source and broader copper-zinc mineralisation in the West Arunta region, successful identification of dense sulphide bodies could significantly de-risk upcoming exploration phases.

While the company remains cautious, noting that all exploration results are preliminary and conceptual, the systematic use of advanced geophysical techniques underscores Litchfield’s commitment to unlocking critical mineral resources responsibly and efficiently.

As the West Arunta region continues to attract attention for its mineral potential, Litchfield’s ongoing work at Oonagalabi positions it well to capitalise on emerging opportunities in the critical minerals sector.

Bottom Line?

Litchfield’s gravity survey marks a decisive step toward unlocking Oonagalabi’s mineral potential, with drilling insights on the horizon.

Questions in the middle?

• What specific gravity anomalies will emerge and how will they correlate with magnetic data?
• How might the survey results influence the timing and scale of planned drilling campaigns?
• Could Bomb Diggity’s intrusive system reveal a commercially viable copper-zinc deposit?