Krakatoa Resources Ltd (ASX:KTA) has wrapped up a productive December 2025 quarter, delivering high-grade gold and antimony results from its Phase 1 exploration program at the Zopkhito Antimony-Gold Project in Georgia and extending its option period to allow further resource definition work in 2026.
The quarter was centred on completing surface diamond drilling and underground in-adit sampling at Zopkhito, with assays received after quarter end confirming the presence of strong gold and antimony mineralisation across multiple zones.
Plan view showing the drill hole collar and drill trace locations of all surface diamond drillholes. Significant assay results (>0.5 g/t Au and/or 0.25% Sb) reflecting mineralised intercepts are shown.
High-grade results from surface and underground drilling
Krakatoa completed 18 surface diamond drill holes for 2,309 metres, with the majority intersecting visible antimony-rich quartz-stibnite veins. Assay results released subsequent to the reporting period included:
- 8m at 14.1 g/t gold from 8m, including 1.5m at 38.5 g/t gold and 3m at 1.48% antimony
- 7m at 3.0 g/t gold from 66.86m, including 1m at 15.9 g/t gold and 1m at 0.47% antimony
- 2.71m at 3.0 g/t gold, including 0.33m at 7.6 g/t gold and 24.2% antimony
Photo of the core from drillhole DD25ZOP014 showing distribution of the mineralised zone with high-grade antimony and gold grades.
The company also completed an extensive underground in-adit drilling and sampling program within historical workings, using a portable coring system designed for confined conditions. Eighteen underground holes were drilled, with most intersecting visible antimony mineralisation.
Plan view showing the underground core sampling drill hole collar and drill trace locations within Adit 80. Significant assay results (>0.5 g/t Au and/or >0.25% Sb) showing mineralised intercepts are shown.
Notable underground results included:
- 4.99m at 6.4 g/t gold and 5.07% antimony, including intervals grading above 19% antimony
- 5.21m at 6.11% antimony and 3.54 g/t gold from surface
- Multiple shorter intervals grading between 7–16% antimony with associated gold mineralisation
These results provide further confirmation of grade continuity within and between historical adits and support the geological model underpinning the project.
Photo of core from drillhole UG25ZOP003 showing distribution of sample intervals and high-grade assay results.
Resource conversion and Phase 2 planning
Zopkhito hosts a foreign resource estimate of 225,000 tonnes at 11.6% antimony for 26,000 tonnes of contained antimony, alongside 7.1 million tonnes at 3.7 g/t gold for approximately 815,000 ounces of gold. Krakatoa’s exploration strategy is focused on converting this historical estimate into a JORC-compliant mineral resource and advancing towards a preliminary economic assessment.
During the quarter, the company also completed underground drone LiDAR and gas surveys across accessible adits, generating high-resolution 3D datasets to improve safety, mapping accuracy and integration of historical sampling data.
The option period over the Zopkhito project was extended by 12 months, providing additional time to complete drilling, metallurgical studies and resource definition work. Phase 2 exploration is expected to commence in April 2026 and will include further surface and underground drilling, metallurgical sampling and environmental baseline studies.
Other projects and corporate update
At the Mt Clere Rare Earths Project in Western Australia, HyLogger scanning of Stone Tank drill core was completed, with results indicating limited alkaline mineralisation. No additional field work was undertaken during the quarter.
Krakatoa also executed a binding agreement to sell its Belgravia Project in New South Wales for $350,000, with $100,000 received during the quarter and the remaining $250,000 due on title transfer.
At quarter end, the company reported cash on hand of $338,000, alongside a $109,000 drilling credit available for future exploration activities.