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Azzuro Resources (ASX: AZ9) has intersected a new copper sulphide zone at its wholly owned Red Hill copper-gold VMS project in southwestern Mongolia, extending the known mineralised footprint and highlighting the growing scale of the system.
The discovery was made in drillhole MU2613A, which intersected 7.0m of semi-massive to massive sulphide mineralisation from 72.3m downhole. The interval contains visible copper sulphides, including bornite and chalcopyrite, and is located 70m to 80m north of previously drilled massive sulphide copper mineralisation.
The hole was originally designed to test shallow gold mineralisation in the project’s North Zone, with the copper sulphides encountered beneath the targeted gold horizon. Azzuro believes the result points to a larger mineralised system than previously mapped, linking the gold and copper mineralization.
The company has also completed downhole electromagnetic (DHEM) modelling, which identified three conductive targets. The most significant, Zone B, is a strong off-hole conductor measuring approximately 1,000 Siemens and has been prioritised for follow-up drilling. Zone C coincides with known sulphide mineralisation and remains open at depth, while also correlating closely with recent gravity survey interpretations.
Drilling remains focused on both gold and copper targets. Five of the six holes completed during the current programme have intersected the shallow alteration zones associated with previously identified gold mineralisation. Assay results from both the gold zones and the newly discovered sulphide zone are expected within four to five weeks.
To accelerate exploration, Azzuro is mobilizing a second drill rig capable of testing deeper targets, including Zone B and other DHEM and gravity anomalies, while also assessing potential extensions to the known copper mineralisation.
Gan-Ochir Zunduisuren, Managing Director of Azzuro Resources, commented, “MU2613A has given us a new zone of copper sulphides north of everything we have drilled at Red Hill, and we found it while chasing the shallow gold. That tells us the copper system is larger than we had mapped, and that the North Hill gold and the copper sulphides are most likely parts of one system.
“The sulphide assemblage is bornite-dominant and resembles our best assayed intercept to date of 13.1m at 2.58% copper, 0.96g/t gold, and 22.4g/t silver. The DHEM has also identified a roughly 1,000 Siemens conductor at Zone B that is already partly confirmed by massive sulphide mineralization and remains open down-dip and along strike.
“With copper at record prices and Red Hill located 250km from the Chinese border, we are moving quickly. A second, deeper-capable rig is mobilizing, metallurgical testwork is due early in Q4 2026, and assays from the new copper zone are expected within four to five weeks.”
The latest results continue to build momentum at Red Hill as Azzuro advances both its shallow gold targets and the expanding copper sulphide system, with multiple high-priority geophysical targets still awaiting drill testing.
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