12 of 15 Surface Holes and 7 of 9 Underground Holes Show Visible Antimony at Zopkhito

• 18 surface diamond drill holes and 9 underground adit core holes completed
• Visible antimony mineralisation intersected in 12 of 15 surface holes and 7 of 9 underground holes
• Assay results pending, expected December 2025 to January 2026
• Drilling aims to validate historical foreign resource estimates and underpin maiden JORC resource
• Project strategically positioned to supply critical antimony to European markets

Drilling Progress at Zopkhito

Krakatoa Resources Limited (ASX – KTA) has provided a comprehensive update on its ongoing drilling campaign at the Zopkhito Antimony-Gold Project in Georgia, a region straddling Eastern Europe and Western Asia. The company has completed 18 diamond drill holes from surface and 9 core sampling holes underground within Adit #80. Visual inspection of core samples reveals that antimony mineralisation was intersected in the majority of these holes, highlighting the potential richness of the deposit.

Surface drilling has now ceased due to the onset of late autumn snowfalls, with underground drilling continuing to maintain momentum. The underground core drilling, conducted using a modified portable coring drill, allows for precise sampling in confined adit environments, which is critical for meeting the stringent requirements of the JORC Code for mineral resource reporting.

Validating Historical Resource Estimates

The Zopkhito project hosts one of the highest-grade antimony foreign resource estimates globally, with historical figures citing 225,000 tonnes at 11.6% antimony and 7.1 million tonnes at 3.7 grams per tonne gold. However, these estimates are not yet JORC-compliant, and Krakatoa’s drilling program is designed to validate and potentially upgrade these figures to meet modern reporting standards.

Visual mineralisation observed includes significant stibnite (antimony sulphide) veins and breccia zones, often accompanied by arsenopyrite sulphide halos that may contain gold. While these visual indicators are promising, laboratory assays are essential to confirm grades and assess impurities. These assay results are anticipated between December 2025 and January 2026 and will be pivotal in defining the project's economic potential.

Strategic Importance and Future Outlook

Antimony is classified as a critical mineral by both the European Union and the United States, primarily due to its applications in energy storage, advanced materials, and defence. Currently, China dominates approximately 90% of global antimony supply, making projects like Zopkhito strategically vital for diversifying supply chains and enhancing regional security.

Located within Europe’s critical minerals corridor, Zopkhito benefits from Georgia’s supportive mining framework, developed infrastructure, and free-trade agreements with the EU and other partners. Krakatoa’s ongoing exploration efforts aim to establish a maiden JORC-compliant Mineral Resource, laying the groundwork for future resource growth and potential development.

As the winter season restricts surface operations, the company’s focus on underground drilling will continue to provide valuable data on vein orientation, grade distribution, and mineral continuity. This methodical approach underscores Krakatoa’s commitment to delivering a robust and compliant resource estimate.

Bottom Line?

With assay results imminent, Krakatoa’s Zopkhito project stands at a critical juncture to confirm its role in Europe’s critical minerals future.

Questions in the middle?

• What will the assay results reveal about the true grade and continuity of antimony and gold mineralisation?
• How will the maiden JORC-compliant resource estimate compare to historical foreign estimates?
• What are the potential timelines and challenges for advancing Zopkhito towards production?