Resource Estimate Delay Signals More Drilling as Orient East Mineralisation Grows

Robust Drilling Results at Orient East

Iltani Resources Limited (ASX, ILT) has delivered a promising update from its ongoing exploration at the Orient East silver-indium deposit in North Queensland. The company announced assay results from drillholes ORR108 to ORR118, part of its JORC infill drilling program, which returned multiple wide intersections of high-grade silver and indium mineralisation. The standout result came from hole ORR109, which intersected 32 metres grading 161 grams per tonne (g/t) silver equivalent starting at 115 metres depth, including higher-grade intervals reaching up to 898 g/t silver equivalent.

Expanding the Resource Footprint

These results confirm the continuity of mineralisation down-dip and along strike, with the deposit remaining open to the south and southwest. Encouraged by these findings, Iltani has decided to undertake an additional round of nine reverse circulation (RC) drillholes, targeting the southwest extensions of the mineralised zone. This expanded drilling program, expected to take about two weeks, aims to add further tonnes and improve the grade profile ahead of the maiden Mineral Resource Estimate.

Implications for the Maiden Resource Estimate

The additional drilling will delay the delivery of the maiden JORC Mineral Resource Estimate for Orient East, now anticipated in late September or early October 2025. However, Iltani’s Managing Director Donald Garner emphasised the value of this approach, noting that the new drilling should enhance both the size and quality of the resource. The deposit’s geometry, featuring a subvertical east-west trending zone and shallowly south-dipping mineralised zones, suggests potential for both open pit and underground mining operations.

Rigorous Methodology and Future Plans

Iltani’s exploration program employs industry-standard sampling and assay techniques, including four-acid digest ICP-MS analysis, ensuring reliable data quality. The company has also engaged Mining One Consultants to develop a detailed 3D geological model to guide drilling and resource estimation. Beyond Orient East, Iltani plans to explore additional targets within its Herberton Project and other advanced projects in Queensland and Tasmania, focusing on base metals and critical minerals essential for a low-emission future.

Strategic Positioning in Silver-Indium Exploration

Orient East is shaping up as one of Australia’s most exciting silver-indium discoveries, with indium being a critical metal for emerging technologies such as touchscreens and photovoltaics. Iltani’s progress in delineating a substantial, high-grade resource positions the company well within the growing market for critical minerals. Investors and analysts will be watching closely as the company advances towards its maiden resource estimate and further drilling results.