Middle Island Resources has extended the gold-silver-base metal mineralisation at its Bobija Project in Serbia to an 80,000m² footprint, with broad, shallow intersections linking multiple zones into a continuous system that remains open in all directions.
- Phase 2 drilling expands mineralised footprint to 80,000m²
- Broad, near-surface gold, silver, copper, lead, zinc mineralisation
- High-grade intercepts at drilling limits suggest further upside
- Historic focus on lead-zinc overlooked gold and silver potential
- Phase 3 drilling planned to test extensions and grow discovery
Bobija Discovery Grows with Broad Polymetallic Zones
Middle Island Resources (ASX:MDI) has significantly expanded the polymetallic system at its Bobija Project in Serbia, with Phase 2 reverse circulation drilling confirming a mineralised footprint now covering approximately 80,000m². The new results link previously discrete Central, North, and West zones into a single, continuous gold-silver-base metal system that remains open in all directions, highlighting the scale of this shallow, sub-horizontal deposit.
Noteworthy intersections include 41 metres at 1.03g/t gold and 52.9g/t silver with notable base metals from just 1 metre depth (hole BMLRC022), alongside similar broad intercepts in adjacent holes. These grades, combined with the shallow nature of mineralisation, suggest strong potential for economic extraction, especially as historical exploration largely overlooked precious metals in favour of lead and zinc.
Gold and Silver Emerging as Key Value Drivers
Historic miners focused almost exclusively on lead and zinc, but Middle Island's drilling is reshaping the narrative by demonstrating gold and silver as dominant contributors throughout the system. CEO Peter Spiers emphasised that every area drilled returned broad, near-surface mineralisation, with high-grade zones persisting at the limits of current drilling. This continuity and grade profile underpin the company's confidence in the system's capacity to grow further.
The Phase 2 program included 17 drill holes totaling 1,363 metres, testing areas within and adjacent to the historic mine. The results have not only expanded the known mineralised footprint but also confirmed the continuity of mineralisation across the Bobija Mine area. Step-out drilling to the north extended mineralisation beyond previously interpreted boundaries, reinforcing the open-ended nature of the deposit.
Strong Exploration Upside and Next Steps
Despite the impressive footprint, the Bobija system remains open for expansion both laterally and at depth. Several historical mineralised zones, including the West Zone, have seen only limited modern drilling, offering promising targets for the upcoming Phase 3 program. Initial Phase 1 drilling in the West Zone returned some of the highest grades to date, including 30 metres at 1.55g/t gold and 26.3g/t silver, with intervals up to 8 metres at 4.03g/t gold.
Middle Island plans to focus its next drilling phase on testing extensions at the northern and southern limits, improving continuity between zones, and further expanding the mineralised footprint. These efforts will run in parallel with exploration at nearby targets such as Tisovik, where recent soil sampling has identified significant silver-lead-zinc-antimony anomalies.
Strategic Positioning in a World-Class Mineral Province
The Bobija Project sits within the Western Tethyan Mineral Province, a geological region hosting some of the world's largest copper, gold, and silver deposits, including Zijin Mining’s Cukaru Peki and Rio Tinto’s Jadar projects. Middle Island's portfolio covers approximately 590km² across 13 licences, positioning the company well to leverage the region's mineral potential.
While the current drilling results bolster Bobija's prospects, the project is still in the exploration phase with no defined mineral resource yet. Licence compliance issues related to historic mining activities are being addressed in collaboration with local authorities, aiming to secure the tenure for future development.
Bottom Line?
Bobija's expanding polymetallic system offers compelling exploration upside, but defining a resource and securing licence compliance remain critical next steps.
Questions in the middle?
- How will Phase 3 drilling refine the extent and grade continuity of the Bobija system?
- What impact will licence compliance and local approvals have on development timelines?
- Can Middle Island leverage its broader Serbian portfolio to accelerate project value creation?