Trigg Minerals Unveils Major Antimony Target at Utah’s Antimony Canyon

A Significant Milestone for Antimony Exploration

Trigg Minerals Limited (ASX, TMG) has announced a major step forward in its exploration efforts with the definition of an Exploration Target for its flagship Antimony Canyon Project in Garfield County, Utah. The target estimates between 12.8 and 15.6 million tonnes of ore grading from 0.75% to 1.5% antimony, translating to a contained metal range of approximately 96,000 to 234,000 tonnes. This represents a significant potential inventory of a critical mineral at a time when Western economies are seeking secure and conflict-free supply chains.

Building on Historical Foundations

The Exploration Target is grounded in a comprehensive review and validation of historical data collected by the U.S. Bureau of Mines and U.S. Geological Survey during the early 1940s. Trigg’s recent fieldwork has confirmed the lateral continuity and stratabound nature of mineralisation within calcareous sandstone units of the Flagstaff Formation. Notably, the mineralised system extends over a 4.31 by 2.42-kilometre footprint with an average thickness of 3 metres, supporting a robust volumetric model.

Conservative Estimates with Upside Potential

The company has adopted a cautious approach by applying a 50% discount to volumetric projections to account for geological uncertainty, reflecting the early stage of the project and the conceptual nature of the target. The density and thickness assumptions used are conservative, meaning that any upward revision following ongoing exploration could materially increase the tonnage and contained antimony metal. Historical sampling focused on lower-grade selvage zones, suggesting that higher-grade cores may yet be delineated.

Next Steps, Advanced Geophysical Survey and Technical Reporting

Trigg has engaged KLM Geoscience to conduct a Controlled-Source Audio-Frequency Magnetotellurics (CSAMT) survey starting mid-July 2025. This geophysical survey aims to refine the understanding of subsurface structures and guide future drilling targets. Concurrently, Dahrouge Geological Consulting Ltd is preparing technical reporting compliant with SEC S-K 1300 and JORC (2012) standards, setting the stage for a maiden Mineral Resource estimate. The company plans to submit a Notice of Intent and drill program design later this year, signaling a clear pathway toward resource definition.

Capital Position and Strategic Outlook

The announcement also confirms the successful settlement of a recent capital raising placement, with no changes to the amount raised. This financial backing supports Trigg’s aggressive exploration and development plans. Managing Director Andre Booyzen emphasised the strategic importance of developing a domestic antimony supply, highlighting the district-scale potential evidenced by over 30 historical mines and adits within the project area.