Great Northern Minerals Ltd (ASX:GNM, FRA:3GW) has moved into Nevada’s Battle Mountain-Cortez district with a binding exploration lease and option to acquire 100% of the Iron Butte gold-silver project, adding a drill-defined asset in one of the world’s best-known gold belts to its portfolio.
The acquisition gives GNM exposure to a project with a substantial historical exploration record and near-term resource potential. Iron Butte has been drilled by multiple operators over several decades, with 148 holes for 23,032 metres completed to date. Historical results point to broad zones of near-surface oxide and transitional gold-silver mineralisation, including 29.2 metres at 2.0 grams per ton (g/t) gold and 32.8 g/t silver from 62.5 metres, 21.3 metres at 1.5 g/t gold and 52.8 g/t silver from 28.9 metres, and 19.8 metres at 1.6 g/t gold and 41.6 g/t silver from 42.7 metres.
The central mineralised zone extends about 500 metres by 300 metres from surface to around 200 metres depth and remains open in all directions. Great Northern has also highlighted deeper upside after one of only 2 deeper diamond holes returned 1.5 metres at 13.5 g/t gold and 11.5 g/t silver from 405.4 metres, pointing to the potential for a larger mineralised system below the shallow oxide zone.
North-south cross section through Iron Butte.
“The acquisition of Iron Butte delivers GNM an outstanding opportunity in Nevada with an extensive and high-quality existing drill dataset that clearly demonstrates a substantial oxide gold-silver system at surface. With 148 existing drill holes, we have a strong foundation and are aggressively progressing to deliver a maiden inferred JORC-compliant resource in the near term — this is a genuine near-term catalyst for the company," non-executive chairman Eddie King said.
"Importantly, a large portion of the historical drilling was primarily focused on gold and did not consistently assay or include silver in the evaluation. The silver grades we are now seeing alongside the gold represent additional upside that was largely overlooked by previous operators in a vastly different market cycle. Beyond the robust shallow mineralisation, the project shows exciting potential for significant resource expansion both along strike and at depth, where geophysical targets and early high-grade Carlin-style intercepts point to a much larger system. The deposit characteristics are potentially highly favourable for low-cost heap leach production, offering a clear and rapid pathway to development."
Prime Nevada setting adds strategic weight
Location is a key part of the project’s appeal. Iron Butte sits in Lander County on the western edge of the prolific Battle Mountain-Cortez trend, close to some of Nevada’s most productive gold corridors. The project is also near the Cortez district, where comparable structural settings host major gold deposits, and lies within a region shaped by long-lived fault systems known to focus gold mineralisation.
Project location in relation to the Battle Mountain-Eureka Trend and the Carlin Tread.
Nevada’s reputation as a tier-one mining jurisdiction further strengthens the case for the acquisition, with Iron Butte also benefiting from access to roads and local infrastructure.
Great Northern is now compiling and verifying historical data as it works towards a maiden inferred JORC-compliant mineral resource in the near term. Exploration and infill drilling are planned for Q3 2026 to support resource growth, while historical geophysics has already identified anomalies below the known mineralisation that remain largely untested.
Following the Golden Ant divestment and execution of the agreement, the company said it had a cash balance of $4.2 million to advance the project. Under the deal terms, GNM has exclusive rights to Iron Butte under a 10-year lease and retains an option to purchase 100% of the project for US$2.5 million before any production decision.
"We are extremely well-positioned with the timing of this acquisition. Gold continues to trade near all-time highs around US$4,750/oz and silver around US$76/oz, with both metals maintaining strong bullish momentum as we move through 2026 and beyond. This deal structure allows us to move quickly on resource definition while retaining full upside. We are highly excited to pursue a maiden JORC Resource leading into commencement of drilling in Q3, unlocking the full potential of this impressive project,” King said.