Oonagalabi Drilling Confirms Large Cu-Zn System Plus Gold-Bismuth Discovery

• Phase 1 drilling confirms extensive Cu-Zn mineralisation at Oonagalabi
• Discovery of magnetite-associated gold-bismuth mineralisation linked to Bomb Diggity anomaly
• Ground gravity surveys reveal multiple density anomalies at Bomb Diggity
• Heavy mineral sands sampling shows high-grade garnet and pyroxene potential
• Three NTGS grants awarded to fund VTEM surveys, diamond drilling, and airborne geophysics

Exploration Breakthrough at Oonagalabi

Litchfield Minerals Limited has reported significant progress in its June 2025 quarter activities at the Oonagalabi Project in Australia's Northern Territory. The company’s Phase 1 reverse circulation drilling program confirmed the presence of a large, disseminated copper-zinc mineralised system within the Oonagalabi Formation. Notably, drilling also identified a previously unrecognised magnetite-associated gold-bismuth mineralisation style, marking a potentially transformative discovery for the project’s scale and value.

The standout intercept came from drill hole OGRC002, which returned 15 metres grading 0.45 grams per tonne gold, 0.17% bismuth, alongside copper and zinc, from a depth of 50 metres. This mineralisation is spatially linked to a prominent magnetic anomaly and is interpreted as a distinct metallogenic event, possibly related to the nearby Bomb Diggity magnetic-gravity anomalies located about 1.5 kilometres to the northeast.

Bomb Diggity, A New Frontier

Ground gravity surveys over the Bomb Diggity prospect revealed four residual gravity anomalies that may correspond to increased sulphide content or a magnetite-bearing hydrothermal breccia. These findings suggest the presence of a magnetic intrusion or intrusion-related mineralisation, which could be the source of the gold-bismuth mineralisation seen in the Phase 1 drilling. This expands the exploration footprint and opens up a new front for Litchfield’s exploration efforts.

Heavy Mineral Sands Potential

Complementing the hard rock exploration, initial bulk sampling of heavy mineral sands in the Clarence River adjacent to Oonagalabi confirmed high-grade garnet and calcium pyroxene/amphibole concentrations. These minerals are valuable in industrial applications, and the results support further HMS sampling planned for the coming quarter, potentially adding a new dimension to the project’s resource base.

Government Support and Funding

Litchfield secured three grants from the Northern Territory Geological Survey’s Geophysics and Drilling Collaboration program, totaling up to $255,743. These grants will partially fund a comprehensive VTEM electromagnetic survey, diamond drilling at Bomb Diggity, and an airborne magnetic and radiometric survey at the Lucy Creek Project. The company is also preparing a capital raising initiative, including a placement and share purchase plan, to finance its ambitious exploration program.

Looking Ahead

With $662,000 in cash at quarter-end and a clear exploration roadmap, Litchfield is poised for a pivotal period. Upcoming VTEM survey results and further drilling will be critical in defining the extent and economic potential of the newly discovered mineralisation styles. Managing Director Matthew Pustahya highlighted the transformational potential of these discoveries and the company’s commitment to advancing its projects with cutting-edge technology and strategic funding.

Bottom Line?

Litchfield’s latest discoveries and government backing set the stage for a potentially game-changing exploration phase at Oonagalabi.

Questions in the middle?

• Will the Bomb Diggity magnetic-gravity anomalies translate into a significant mineral resource?
• How will upcoming VTEM survey results influence drilling targets and project valuation?
• What impact will the planned capital raising have on the company’s exploration momentum and shareholder value?