Azzuro Resources Extends Red Hill Copper-Gold Strike to 550m with High-Grade Intercepts

Red Hill VMS System Expands with High-Grade Copper Intercepts

Azzuro Resources PLC (ASX:AZ9) has reported a significant extension of its Red Hill Copper-Gold Volcanogenic Massive Sulphide (VMS) system in southwestern Mongolia, now confirmed over almost 550 metres of strike length and still open to the west, east, and at depth. The latest batch of assay results from drillholes MU2604 to MU2608 reveals broad zones of high-grade copper-gold-zinc-silver mineralisation, with the standout being drillhole MU2605, which returned an exceptional 1.6 metres at 11.94% copper, 1.63 g/t gold, and 30.13 g/t silver from 127.2 metres downhole.

This highest-grade copper intercept to date in the 2026 program was encountered approximately 124 metres west of MU2604, confirming the company’s interpretation that copper grades strengthen towards the western end of the Red Hill system. MU2604 itself delivered a broad 18-metre interval averaging 1.02% copper, 0.54 g/t gold, and 12.14 g/t silver, including a higher-grade 4.3-metre section with 1.27% copper and 1.41 g/t gold. Meanwhile, MU2608 extended copper mineralisation further west with multiple intercepts above 0.5% copper.

Shallow Gold Corridor Extended Northward

Beyond copper, Azzuro has also extended a shallow, high-grade gold corridor within a roughly 600-metre mineralised zone in the northern part of Red Hill. Drillhole MU2606 intercepted gold mineralisation approximately 50 metres east of a 2025 hole, MU2501, confirming continuity with 6 metres at 4.18 g/t gold from 18.7 metres, including 3 metres at 7.38 g/t gold. This shallow gold zone, accompanied by elevated silver grades, adds a valuable dimension to the project’s resource potential.

Ongoing Exploration and Metallurgical Testing

With metallurgical testwork scheduled to begin in Q3 2026, Azzuro is advancing efforts to define the size, geometry, and key characteristics of the Red Hill system. The company is integrating geological, geophysical, and assay data to refine drilling targets and is concurrently conducting a 3D induced polarisation (IP) geophysical survey over its nearby Oval copper-nickel discovery. Pending assay results from additional drillholes at Red Hill and the Copper Ridge prospect are expected in the coming weeks, which could further delineate the system’s extent.

Managing Director Gan-Ochir Zunduisuren emphasised the growing scale and fertility of the Red Hill system, noting the project remains open in every direction and highlighting the potential to develop Red Hill alongside Oval in Mongolia’s low-operating-cost jurisdiction. The ongoing drilling program and forthcoming metallurgical data will be critical in assessing the project’s economic viability.

Historical Data and Technical Context

The Red Hill project, formerly known as Maikhan Uul, has a history of exploration dating back to the late 1980s, with multiple phases of drilling and geophysical surveys conducted by previous operators. Azzuro has incorporated historical drillhole data, which has been reviewed and deemed suitable for reporting under the JORC Code (2012), although the historical resource estimate remains unclassified pending further evaluation. The current drilling program employs modern diamond drilling techniques with oriented core and rigorous QA/QC protocols, ensuring the reliability of assay results.

While true widths of mineralisation are yet to be definitively established, the steeply north-dipping geometry of the massive sulphide lens suggests reported downhole lengths likely exceed true widths. The shallow oxide gold-silver zone appears to have downhole intervals similar to true widths.