Drilling Paused as Iltani Models Numerous VTEM Anomalies at Herberton Project

• Multiple strong VTEM anomalies detected at Orient East and West
• New potential mineralised structures identified south of Orient West and at Deadman Creek
• Modelling of anomalies underway with prioritisation for drill testing
• Drilling paused temporarily to accommodate detailed modelling, resuming mid to late July
• Queensland Government funding of $230,375 supports the VTEM survey

Survey Success at Herberton

Iltani Resources (ASX – ILT) has announced encouraging preliminary results from a recent helicopter-borne Versatile Time Domain Electromagnetic (VTEM) survey conducted over its Herberton Project in northern Queensland. The project includes the Orient deposit, Australia's largest known silver-indium resource. The survey, funded in part by a $230,375 grant from the Queensland Government’s Collaborative Exploration Initiative, has identified multiple strong electromagnetic (EM) anomalies that suggest the mineralised system is more extensive than previously understood.

Expanding the Known Mineralisation

The VTEM survey detected multiple strong EM responses at both Orient East and West, indicating that the mineralised system extends beyond current boundaries and remains open to the northeast and southwest. Additional anomalies south of Orient West hint at parallel mineralised structures or new vein systems, while strong responses at Deadman Creek, a northern extension of the Orient system, suggest further sulphide mineralisation potential. These findings align with previous drilling and geophysical data that have shown the Orient system to be highly responsive to electromagnetic methods.

From Modelling to Drilling

Mitre Geophysics is currently modelling the VTEM anomalies, focusing initially on the Orient area. Once modelling is complete, the anomalies will be ranked to prioritise drill targets. Iltani has temporarily paused its ongoing drilling program at Orient East to accommodate the extended modelling process, with plans to resume drilling in mid to late July to test the high-priority VTEM targets. Meanwhile, site visits and geological mapping will commence at other anomaly locations, particularly Deadman Creek, to better understand the nature of these targets before drilling.

Strategic Importance and Next Steps

The Herberton Project covers approximately 367 square kilometres in a historically rich mineral field with over 2,400 known mines and prospects. Iltani’s tenements include the Boonmoo Sag Caldera and the Isabel deposit, both prospective for base and precious metals. The Orient Exploration Target, estimated between 32 to 42 million tonnes at 110–124 grams per tonne silver equivalent, remains conceptual but promising. The company aims to convert this target into a JORC-compliant resource through ongoing drilling and exploration.

With the VTEM survey delivering more targets than initially expected, Iltani’s methodical approach, combining geophysical modelling, field verification, and targeted drilling, positions the company to potentially expand its resource base significantly. The support from the Queensland Government underscores the strategic importance of this exploration effort within the state’s resources development plan.

Bottom Line?

As Iltani advances from geophysical modelling to targeted drilling, the Herberton Project could soon redefine Australia’s silver-indium landscape.

Questions in the middle?

• How will the detailed VTEM anomaly modelling influence the prioritisation of drill targets?
• What are the expected timelines and milestones for converting the Exploration Target into a JORC Resource?
• Could the newly identified anomalies at Deadman Creek and south of Orient West lead to entirely new mineralised systems?