Azzuro Resources has reported thick, high-grade copper-gold-zinc-silver mineralisation from drillhole MU2601 at its Red Hill project, while drillhole MU2605 visually extends the massive sulphide zone by 124 metres, highlighting a substantial polymetallic system still open along strike and at depth.
- MU2601 delivers 13.1m at 2.58% copper and 0.96 g/t gold
- Drillhole MU2605 visually extends massive sulphide zone by 124 metres
- Seven diamond and three RC holes completed in 2026 drilling program
- Near-surface gold-silver zone confirmed, assays pending
- Gravity survey underway to refine exploration targeting
High-Grade Massive Sulphide Mineralisation Confirmed at Red Hill
Azzuro Resources PLC (ASX:AZ9) has delivered assay results from drillhole MU2601 that underscore the potential of its Red Hill (Maikhan Uul) Copper-Gold VMS Project in Mongolia. The hole intersected a thick, high-grade massive sulphide zone grading 13.1 metres at 2.58% copper, 0.96 g/t gold, 22.4 g/t silver, and 0.76% zinc starting from 108.4 metres. This intercept not only confirms the presence of a polymetallic copper-gold-zinc-silver system but also shows a higher copper tenor than earlier holes, suggesting increasing copper grades towards the west-northwest within the mineralised lens.
In addition to this, MU2601 also intersected a shallow gold-silver zone with 4.9 metres at 3.49 g/t gold and 10.5 g/t silver, including a higher-grade interval of 3.3 metres at 5.00 g/t gold. This confirms earlier findings from drillhole MU25011 and points to a near-surface oxide gold-silver opportunity north of the main VMS system.
Visual Extension of Massive Sulphide Zone by MU2605
Drillhole MU2605, completed to a depth of 300.5 metres, visually extends the massive sulphide mineralisation approximately 124 metres to the west-northwest from the previously known extent at MU26042. The hole intersected multiple sulphide zones, including two massive sulphide intervals with a copper-rich basal zone exhibiting up to 41.6% chalcopyrite and 57% pyrite over 1.3 metres. This visually copper-rich interval, combined with disseminated sulphides and chalcopyrite veining throughout the hole, validates the company's geophysical targeting model and suggests a substantial mineralised system with a strike length of at least 272 metres now confirmed by six drillholes.
Ongoing Drilling and Exploration Activities
The 2026 drilling campaign at Red Hill has seen seven diamond drillholes (MU2601 to MU2607) and three reverse circulation holes (MURC01 to MURC03) completed. While MU2601 assays are reported, results for the remaining holes are pending. These holes aim to both extend the high-grade VMS copper-gold-zinc-silver system and test the lateral continuity of the near-surface gold-silver oxide zone. Visual logging confirms the presence of the targeted altered rhyolite host rocks in all five shallow holes testing the gold-silver zone, with the strongest alteration noted in the central cluster of holes MU2606 and MURC03.
Complementing the drilling, a ground gravity survey covering nearly 3.8 square kilometres has been completed to map density variations associated with the massive sulphide system. A detailed 3D inversion and interpretation by Terra Resources Pty Ltd is underway to better separate near-surface oxide responses from deeper massive sulphide mineralisation. This will be integrated with drilling and downhole electromagnetic (DHEM) data to refine future exploration targeting.
Implications for Red Hill's Mineral Potential
Managing Director Gan-Ochir Zunduisuren highlighted the significance of these results, noting that the combined data suggest an annulus of high copper grade arranged around a core of more pyritic, higher-temperature massive sulphide mineralisation. The extension of mineralisation and the polymetallic nature of the system reinforce the potential for a substantial deposit at Red Hill, which remains open both along strike and at depth.
Pending assay results from recent drillholes will be crucial to fully delineate the system's extent and grade continuity. The integration of geophysical and geochemical data sets is expected to sharpen targeting ahead of further drilling, including planned DHEM surveys facilitated by PVC casing installed in the 2026 diamond holes.
Bottom Line?
Azzuro's latest drilling confirms Red Hill as a sizeable, polymetallic VMS system with promising extensions, but upcoming assays and geophysical modelling will be key to unlocking its full potential.
Questions in the middle?
- Will pending assays confirm the lateral and depth continuity of high-grade mineralisation at Red Hill?
- How will the 3D gravity inversion reshape targeting and influence the next phase of drilling?
- Could the near-surface gold-silver oxide zone evolve into a standalone economic opportunity?