Highlights

  • Maiden aircore drilling at Limestone Bore has identified two interpreted mineralised structural trends, returning high-grade copper intersections across an 18-hole, 1,355-metre program.
  • Key results include intersections of 32 metres at 1.91% copper from 27 metres and 29 metres at 1.73% copper from 3 metres, with high-grade intervals reaching 4.77% copper.
  • Limestone Bore is located more than 7km west of other known mineralisation within the Neds Creek project, in an area largely concealed beneath transported sediments.
  • Follow-up drilling is being planned at Limestone Bore, with BOA also set to recommence drilling at other Neds Creek prospects targeting depth extensions.

BOA Resources Limited (ASX:BOA) has reported further encouraging copper exploration results from its 100%-owned Neds Creek Copper Project in Western Australia. Assay results from an 18-hole, 1,355-metre aircore drilling program at the Limestone Bore prospect have identified two distinct mineralised structural trends, adding a new priority exploration target to the company's growing Neds Creek pipeline. The results follow recent high-grade drilling success at the Ricci Lee and Rooneys prospects within the same project.

The identification of meaningful copper mineralisation at Limestone Bore is considered particularly notable given the prospect's location — more than 7 kilometres west of other known mineralised zones within the project area. Much of the Limestone Bore area is concealed beneath transported sediments, meaning the discovery was made through shallow geochemical drilling rather than outcrop-based targeting.

Drilling Results and Mineralisation Styles

The aircore program has returned substantial copper intersections across two interpreted structural trends. A preliminary interpretation identifies an east-west striking, north-dipping structure associated with high-grade copper mineralisation, incorporating the new intersection of 32 metres at 1.91% copper from 27 metres depth. A second, north-northwest striking mineralised structure is interpreted from intersections including 29 metres at 1.73% copper from 3 metres depth, with higher-grade intervals returning up to 4.77% copper, and 10 metres at 1.83% copper from 67 metres depth, with peak grades of 4.62% copper.

Two distinct mineralisation styles have been identified at Limestone Bore: shallow supergene copper mineralisation characterised by elevated copper grades and generally low silver content, and deeper silver-bearing copper mineralisation hosted within carbonaceous structures displaying geological similarities to the fault-hosted mineralisation at Ricci Lee and Rooneys. Additional drilling will be required to establish the geometry, continuity and extent of these interpreted structures.

Regional Significance and Exploration Context

The Neds Creek project spans a tenement package of 1,378 square kilometres in the Capricorn Orogen region of Western Australia, covering approximately 60 kilometres by 40 kilometres across the Paleoproterozoic Yerrida Basin. The project area also lies within a region that hosts other known copper-gold systems. BOA has a 100% interest in the project, including full ownership of the Thaduna and Green Dragon copper deposits, with Acquisition completion announced in October 2026.

The Limestone Bore results reinforce the view that additional copper-mineralised systems may exist across the broader project area beyond the currently known prospects. The effectiveness of systematic exploration in areas of limited surface exposure — with the discovery made through geochemical drilling beneath transported cover — demonstrates the potential for further blind discoveries. Assay results from aircore programs at the Blockley, Ward and Mueller prospects are still pending.

Next Steps and Upcoming Drilling

BOA has indicated that follow-up drilling at Limestone Bore is being planned, with geological interpretation work focused on refining the structural model and determining the most effective hole orientation and spacing for further testing. The Limestone Bore target will be evaluated alongside other emerging exploration priorities as the company shapes its 2027 program.

More broadly, BOA plans to recommence drilling at Neds Creek before the end of November 2026, targeting depth extensions at Ricci Lee and further testing at Rooneys. A recent $9.2 million share Placement provides the company with Capital to advance exploration and test the broader potential of the project. The combination of multiple prospects with meaningful intersections and a large unexplored tenement package positions Neds Creek as a potentially significant copper system.

Key Insights

The Limestone Bore aircore drilling results add a new dimension to the Neds Creek Copper Project, demonstrating that meaningful copper mineralisation exists at a location well removed from previously known deposits. The identification of two distinct mineralisation styles — shallow supergene and deeper silver-bearing hosted in carbonaceous structures — suggests geological complexity that warrants systematic follow-up. With pending assays from three additional prospects and planned recommencement of drilling across the project, BOA's near-term exploration pipeline is well-stocked. The discovery of high-grade copper beneath transported cover highlights the importance of geochemical exploration methods in a project area with limited outcrop. Neds Creek's scale and geological prospectivity continue to support its development as a district-scale copper exploration project.