Sentinel Metals has successfully launched on the ASX and completed a maiden exploration program at its Columbia Gold Project, identifying promising new drill targets for a substantial upcoming campaign.
- Completed maiden field program integrating HSAMT geophysics and structural mapping
- Defined compelling new drill targets beneath historical drilling extents
- Planning a 5,000m diamond drill program starting March 2026
- JORC Inferred Mineral Resource Estimate of 920,000 ounces gold at 1.3g/t
- Appointed Dr Greg Corbett as Consultant Technical Advisor
Successful ASX Debut and Strategic Exploration
Sentinel Metals Limited marked a significant milestone with its successful listing on the Australian Securities Exchange in late October 2025, raising $10 million through its Initial Public Offer. The company’s flagship asset, the Columbia Gold Project in Montana, USA, boasts an inferred JORC Mineral Resource Estimate of 920,000 ounces of gold at a grade of 1.3 grams per tonne. This advanced-stage project has now entered a new phase of exploration following a maiden field program completed in the December quarter.
Innovative Geophysical Surveying and Mapping
Sentinel’s maiden field season integrated cutting-edge hybrid-source audio-magnetotellurics (HSAMT) geophysics with detailed structural and geological mapping. This approach has allowed the technical team to visualise sub-vertical, vein-related resistive features extending well below the depth of historical drilling, revealing a more complex and potentially larger epithermal gold system than previously understood. The HSAMT survey, conducted over 284 stations, effectively identified potential feeder structures that could be the source of surface mineralisation, a critical insight for targeting deeper mineralised zones.
Compelling Drill Targets and Upcoming Campaign
Building on these findings, Sentinel has defined a suite of high-priority drill targets, including deep epithermal convergence zones, down-dip extensions of known veins, and new western and northern targets that remain untested by historical drilling. The company is poised to commence a 5,000-metre HQ diamond drill program in March 2026, designed to test these targets and upgrade resource confidence. This program aims not only to extend the known mineralisation but also to explore the potential for sulphide-bearing zones at depth, which could significantly enhance the project’s value.
Strengthened Technical Expertise
Sentinel has bolstered its technical capabilities with the appointment of Dr Greg Corbett, a globally recognised expert in porphyry and epithermal gold systems. Dr Corbett’s extensive experience and his co-authorship of the seminal Corbett & Leach geological framework provide the company with invaluable insight into the structural and fluid processes that create high-grade gold shoots. His involvement is expected to sharpen the company’s drill targeting and exploration strategy as it advances the Columbia Project.
Financial Position and Outlook
At the end of the quarter, Sentinel held approximately A$6.98 million in cash after repaying outstanding loans, maintaining a strong financial position to support its exploration activities. The company remains under budget relative to its IPO prospectus expenditure forecasts, reflecting disciplined capital management. With the upcoming drill campaign, Sentinel is well positioned to deliver meaningful exploration results that could materially impact its resource base and market valuation.
Bottom Line?
Sentinel Metals’ upcoming drill results will be pivotal in defining the future scale and value of the Columbia Gold Project.
Questions in the middle?
- Will the March 2026 drill program confirm the presence of deeper sulphide zones suggested by HSAMT data?
- How might Dr Greg Corbett’s expertise influence the interpretation of exploration results and subsequent targeting?
- What are the potential timelines and milestones for upgrading the current inferred resource to higher confidence categories?