Tali Resources Ltd (ASX:TR2) Returns 1,500ppm Copper at Gibson West from 72 West Arunta Aircore Holes

Sonal Goyal

28 October 2026 01:11 PM AEDT

Tali Resources Ltd (ASX:TR2) Returns 1,500ppm Copper at Gibson West from 72 West Arunta Aircore Holes

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Key Highlights

Tali completed 72 aircore holes for 3,961m at the West Arunta Project between June and August 2026.
Hole 26WAAC0030 at Gibson West returned 5m at 894ppm Cu from 4m, including 1m at 1,500ppm Cu from 8m.
Chilka East drilling extended platinum group element anomalism over about 600m of strike, with palladium of 10-21ppb and platinum of 5-9ppb.
Hutt hole 26WAAC0063 returned 8m at 0.4 g/t Ag, 917ppm Pb and 1,080ppm Zn.

Tali Resources Ltd (ASX:TR2) has reported composite assay results from shallow aircore drilling at its West Arunta Project in Western Australia, covering 72 holes for 3,961m drilled from June to August 2026. The program gave an initial test of the Caspian East and Lonar East prospects and followed up earlier work at Chilka, Gibson West and Hutt. Holes targeted large geophysical anomalies near the Central Australian Suture (CAS), second-order splays off the structure and possible sediment-hosted copper and base metal systems. Composite samples of 4m were assayed by ALS Perth.

Gibson West Copper in Basin Sandstone

Gibson West was drilled as a single north-south line testing a magnetic zone in Aileron basement, part of the CAS in the north, with holes extending south across basal Amadeus Basin sediments. Two of the southern holes intersected anomalous copper, lead, zinc and silver at the edge of the basin. The southernmost, 26WAAC0030, recorded 5m at 894ppm copper from 4m to the end of hole at 9m, including 1m at 1,500ppm copper from 8m in sandstone.

A twin hole, 26WAAC0030b, passed through the sandstone into siltstone at 10m downhole and returned 4m at 201ppm copper from 4m. Tali said this confirmed copper anomalism in the sandstone but not in the underlying siltstone. Holes drilled across the magnetic CAS intersected some sulphide, magnetite, trace arsenic, bismuth and tin, and albite alteration, which the company considers may indicate potential mineralisation along strike.

Chilka Alteration and Platinum Group Elements

At Chilka West, holes 26WAAC0022 to 26WAAC0029 intersected mafic, intermediate and felsic intrusive rocks containing anomalous nickel and chromium. The two southernmost holes, 26WAAC0026 and 26WAAC0027, tested nickel-chromium bearing dioritic intrusives beside a segment of the CAS and showed calcite-chlorite-epidote alteration with fine ferruginous veinlets, probably after pyrite. Tali is evaluating the area for orogenic-style gold potential. The ultramafic rocks with anomalous platinum group elements (PGEs) seen in earlier hole 25CHRC003 were not found on this line.

At Chilka East, holes 26WAAC0017 to 26WAAC0021 intersected high-magnesium mafic and ultramafic lithologies with palladium of 10-21ppb, platinum of 5-9ppb and gold of 7-15ppb in holes 26WAAC0018 to 26WAAC0020. The results match historical drilling and extend the PGE-anomalous ultramafic rocks over about 600m of strike, with the package open to the west.

Hutt Silver-Lead-Zinc and the Barren Targets

Drilling at Hutt followed up silver, lead and zinc pathfinders intersected in 2022. The prospect comprises conglomerate lying structurally below mafic intrusive rocks, with anomalous silver, lead, zinc, arsenic, molybdenum, bismuth and tellurium and a single gold value of 105ppb over 1m. Six aircore holes were completed south of reverse circulation hole HURC002, with three holes on a line to the east and one to the west. Hole 26WAAC0063 returned 8m at 0.4 g/t Ag, 917ppm Pb and 1,080ppm Zn. The assays confirmed metal anomalism in the sediment and identified multiple repeats of the silver-lead-zinc system, while the shallow dip of the sediment-intrusive contact means the extent of the conglomerate system remains untested.

At Caspian East, holes tested a large gravity anomaly under shallow cover around granite emplaced into Pollock Hills Formation felsic volcanics. They intersected felsics and basalts with no anomalism or alteration, and the basalts are believed to be the source of the gravity response. At Lonar East, a large gravity anomaly and magnetically quiet zone was explained by mafic intrusives. Neither prospect showed local signs of mineralisation.

Where the West Arunta Program Stands

The drilling returned copper-bearing sandstone at Gibson West, altered intrusives at Chilka West, PGE anomalism at Chilka East and repeated silver-lead-zinc anomalism at Hutt, while the Caspian East and Lonar East anomalies were accounted for by barren rock types. Managing Director Rhys Bradley said the results improved the company's geological understanding of the West Arunta. Follow-up drilling at Hutt and Hutt West is scheduled for the December quarter, and aircore drilling has recommenced at the project.

FAQs

Q: How much drilling did Tali complete at West Arunta?

A: Tali completed 72 aircore holes totalling 3,961m between June and August 2026.

Q: What was the best copper result at Gibson West?

A: Hole 26WAAC0030 returned 5m at 894ppm copper from 4m, including 1m at 1,500ppm copper from 8m in sandstone.

Q: What did drilling find at Chilka East?

A: Holes intersected mafic and ultramafic rocks with palladium of 10-21ppb and platinum of 5-9ppb, extending PGE anomalism over about 600m of strike.

Q: Did Caspian East and Lonar East show mineralisation?

A: No. The geophysical anomalies at both prospects were explained by basalts and mafic intrusives respectively, with no local signs of mineralisation.

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