Yandal Expands Siona Discovery Ahead of Major Aircore Drilling Push

Konrad Forrest
Yandal Resources

21 May 2025 | West Perth, WA – Yandal Resources (ASX:YRL) has confirmed broad zones of gold mineralisation at the Siona Discovery, part of its Ironstone Well-Barwidgee Project in WA’s northern Goldfields, and is now preparing to launch a major 12,500m aircore drilling program at the nearby Caladan prospect.

Diamond drilling at Siona returned:

  • 16.3m @ 0.5g/t Au from 322.2m (25IWBRD0003)

  • 29.1m @ 0.4g/t Au from 282.9m (25IWBRD0010)

  • 6.4m @ 1.5g/t Au from 103.5m, including

    • 0.4m @ 12.7g/t Au (25IWBDD0009)

  • 116m @ 1.0g/t Au from 97m (24IWBRD0039 – RC + diamond tail)

These results build on the broad, low-grade halo with internal high-grade zones identified in earlier RC drilling. Geological modelling suggests gold mineralisation is controlled by deformation along and within the New England Granite intrusion.

Managing Director Chris Oorschot said:

“We’re now armed with a much clearer understanding of the Siona system. With the full extent of the granite under Yandal’s control, we’re shifting focus to testing new structural targets that could deliver larger-scale discoveries.”

Next steps:

  • Caladan aircore drilling begins late May

  • Follow-up aircore at Salusa and other New England Granite (NEG) targets

  • Heritage surveys scheduled for late May / early June

  • RC drilling to resume post-aircore to test deeper high-grade trends at Siona

Yandal sees the NEG as a regional-scale gold system, with visible gold, strong alteration, and favourable structural controls now confirmed through diamond drilling.