Tyranna Strikes High-Grade Lithium and Caesium in Angola Drilling Campaign

Exploration Progress at Namibe

Tyranna Resources Limited (ASX:TYX) has delivered a robust update on its Namibe Lithium Project in Angola, revealing encouraging results from its late 2024 diamond drilling campaign. The program, comprising 11 holes and 817 meters of drilling, targeted three key prospects: Muvero, Calicatas, and Loop.

At the Loop Prospect, the company intersected well-mineralised spodumene-bearing pegmatites with lithium oxide (Li2O) grades reaching up to 2.22% over 10.9 meters from surface. These results confirm the presence of substantial lithium mineralisation near surface, a positive indicator for potential economic extraction.

Multi-Element Potential at Muvero

The Muvero Prospect continues to impress with lithium intersections including 5.69 meters at 1.52% Li2O and 4.4 meters at 1.47% Li2O. Notably, drill hole NDDH010 returned a standout intersection of pollucite, a high-value caesium mineral, grading 8.46% Cs2O over 4.05 meters. This adds a valuable dimension to the project, especially given Tyranna’s partnership with Sinomine Resources Group, a global player in the caesium market.

These multi-element intersections underscore the potential for a diversified mineral portfolio within the pegmatite field, which hosts over 1,000 pegmatites spanning a 202 km2 area. The pegmatites vary in size and composition, with lithium minerals identified at 10 different outcrops so far, highlighting the project's exploration upside.

Strategic Expansion and Next Steps

Managing Director David Crook emphasised the strategic importance of these results, noting the company’s ongoing efforts to expand its footprint through applications for additional prospecting titles targeting lithium and base metals. The company’s approach aligns with its broader strategy to secure demand-driven metals in Angola, a jurisdiction gaining attention for its mineral potential.

Following the drilling campaign, Tyranna has collected extensive soil and rock samples across prospective areas beyond the current drill targets. Assay results from these samples are expected in March 2025 and will guide the next phase of drilling. The company plans to progressively test new lithium targets as access improves, aiming to build a comprehensive resource base.

Geological Context and Quality Assurance

The Namibe Project targets the Paleoproterozoic Giraul pegmatite field, known for its large, zoned pegmatites that host lithium-caesium-tantalum (LCT) mineralisation. Tyranna’s drilling is the first systematic test of these pegmatites, with previous exploration limited to surface sampling and academic studies.

Sampling and assay protocols adhere to industry best practices, including diamond core drilling, detailed geological logging, and rigorous quality control measures. Samples were analyzed using sodium peroxide fusion digestion and ICP-MS techniques, ensuring reliable and comprehensive geochemical data.

While the geometry of the mineralisation remains to be fully understood, the current drilling results provide a strong foundation for resource modelling and future development planning.