Highlights

  • Dundas Minerals reported new RC drilling assay results from the Rockland Gold Project near Kalgoorlie
  • Latest drilling confirmed continuity of gold mineralisation across multiple sections
  • Best intercept included 4m at 4.54 g/t gold from 140m
  • Mineralisation remains open along strike and at depth
  • Four mineralised lodes have now been interpreted across approximately 1km strike length
  • Follow-up drilling programs are being planned across Rockland and Capricorn
  • The company believes the broader Rockland-Aquarius-Capricorn corridor remains largely underexplored

Dundas Minerals Limited (ASX:DUN) has reported new assay results from reverse circulation (RC) drilling completed at its Rockland Gold Project near Kalgoorlie in Western Australia, with the latest programme continuing to confirm the continuity of gold mineralisation across the emerging discovery area.

The company said the latest drilling intersected multiple zones of mineralisation beneath and along strike from previously identified high-grade gold intercepts, while also supporting its interpretation of a broader north-south mineralised corridor extending through Rockland, Aquarius and Capricorn.

Dundas Minerals shares traded at AUD 0.010 during the afternoon session on 11 May 2026. The company’s latest exploration update comes as it continues advancing its portfolio of gold projects within the Kalgoorlie district, with follow-up drilling programs already being planned.

The latest RC drilling campaign at Rockland comprised 10 holes for approximately 1,688 metres and was designed to test depth extensions and strike continuity associated with mineralisation identified during the company’s maiden drilling campaign completed in early 2025.

According to Dundas Minerals, the programme confirmed continuity of gold mineralisation across multiple sections and also identified encouraging grades within deeper fresh rock positions beneath the interpreted oxide-supergene zone. The company believes these deeper intersections may indicate the presence of a broader primary mineralised system.

Key Assays Highlight Deeper Gold Potential

Among the most notable assay results from the latest campaign were:

  • 4 metres at 4.54 grams per tonne (g/t) gold from 140 metres in hole 26RKRC005
  • 12 metres at 1.22 g/t gold from 172 metres, including 4 metres at 3.13 g/t gold from 180 metres in hole 26RKRC005
  • 8 metres at 0.79 g/t gold from 68 metres, including 4 metres at 1.04 g/t gold from 72 metres in hole 26RKRC003

The strongest results came from drill hole 26RKRC005, which was drilled beneath and north of previously reported high-grade intercepts. The hole intersected both shallow and deeper zones of mineralisation, with the deeper intersections viewed as particularly encouraging by the company.

Dundas Minerals noted that the deepest intercept at Rockland to date returned 4 metres at 3.13 g/t gold, which management believes may support the interpretation that the mineralised system strengthens with depth.

Large Structural Corridor Continues To Emerge

The company said four mineralised lodes have now been interpreted across approximately one kilometre of strike at Rockland. Importantly, mineralisation remains open both along strike and at depth, with substantial sections of the corridor still largely untested by drilling.

Management believes the broader Rockland mineralised system extends northward toward the Aquarius prospect and ultimately toward the Capricorn project, located approximately 700 metres further north along the same interpreted structural trend.

The latest drilling results also continued to support Dundas Minerals’ geological interpretation that gold mineralisation at Rockland is associated with shallow to moderately east-dipping structures hosted within mafic rock units.

The company said the broader structural corridor stretching from Rockland through Aquarius and Capricorn may represent a larger mineralised system within the Kalgoorlie district.

Dundas Minerals Managing Director Jonathan Downes said the latest results reinforced the company’s view that Rockland is developing into a significant emerging gold system.

According to Downes, the drilling programme successfully confirmed continuity of mineralisation beneath and along strike from the original discovery area, while deeper intersections continued to produce encouraging grades and widths.

The company also highlighted that Rockland is located on a granted Mining Lease within a well-established gold district, despite the area not previously being systematically drilled or mined.

Follow-Up Drilling Planned Across Corridor

Further exploration activity is now being prepared across the broader corridor. Dundas Minerals confirmed that a Programme of Works (POW) for additional drilling at Rockland is currently being prepared, while another POW has already been lodged for drilling at Capricorn following the recent grant of the mining lease.

The company intends to test the largely undrilled area between Rockland and Capricorn, where historical drilling has already returned encouraging gold intercepts.

Previous drilling completed at Capricorn and announced in February 2024 included:

  • 3 metres at 9.14 g/t gold from 114 metres in hole 23WDRC003
  • 3 metres at 5.3 g/t gold from 28 metres in hole 23WDRC004
  • 1 metre at 6.6 g/t gold from 25 metres in hole 23WDRC005

Dundas Minerals noted that these results align with east-dipping structures interpreted at approximately 30 degrees, consistent with the geological controls currently being observed at Rockland.

The Aquarius prospect has also produced encouraging historical results and remains relatively underexplored below shallow depths. Earlier drilling at Aquarius returned several high-grade gold intersections, including:

  • 3 metres at 10.2 g/t gold from 109 metres, including 1 metre at 29.6 g/t gold
  • 1 metre at 5.04 g/t gold from 49 metres
  • 3 metres at 1.8 g/t gold from 74 metres
  • 2 metres at 6.5 g/t gold from 70 metres

The company believes these results further support the prospectivity of the broader Rockland–Aquarius–Capricorn corridor.

Aquarius Prospect Adds Further Exploration Interest

In addition to the latest drilling update, Dundas Minerals also announced it had exercised its right to terminate an option agreement involving several exploration tenements held by GTT Metals Group Pty Ltd.

The company said the Withdrawal aligns with its strategy of prioritising advancement of its core Kalgoorlie district gold Assets, particularly the Rockland-Aquarius-Capricorn corridor and the Romano Project.

Dundas Minerals stated that its obligations under the agreement are now complete, aside from providing a written exploration report to the vendor as required under the original terms.

The latest exploration update builds on earlier drilling success announced by the company in January 2025. Previous high-grade intercepts from the maiden Rockland drilling programme included:

  • 6 metres at 3.3 g/t gold from 78 metres in hole 24RKRC005, including 1 metre at 7.5 g/t gold
  • 5 metres at 2.3 g/t gold from 109 metres in hole 24RKRC013, including 1 metre at 8.1 g/t gold
  • 2 metres at 5.6 g/t gold from 74 metres in hole 24RKRC015, including 1 metre at 14.9 g/t gold

The company said these earlier results, combined with the latest RC drilling assays, continue to improve its understanding of the geometry and scale potential of the Rockland mineralised system.