Trigg Minerals Unveils High-Grade Antimony Zones Up to 33.2% Sb at Antimony Canyon

Exploration Breakthrough at Antimony Canyon

Trigg Minerals Limited (ASX – TMG) has announced a major step forward in its exploration of the Antimony Canyon Project in Utah, USA, with maiden channel sampling returning outstanding antimony grades up to 33.2% Sb. This discovery not only confirms the presence of multiple high-grade zones but also suggests a mineral system far more extensive than previously understood.

The recent program collected 251 rock chip samples, of which 52 exceeded 1% Sb, highlighting widespread mineralisation across both historical mine areas and newly identified targets. Notably, the company uncovered mineralisation beneath the Flagstaff Formation, where stibnite-filled concretions in tuffaceous sandstone point to a vertically extensive system. This expands the exploration horizon beyond historical limits and opens new avenues for drilling and resource definition.

Significance of the Grades and Geological Setting

The reported grades significantly outpace historical results from the 1940s US Bureau of Mines studies, which averaged around 0.79% Sb. Trigg’s channel sampling at key historic mines such as Stebenite and Little Emma returned average grades of 9.7% and 5.3% Sb respectively, with peak samples exceeding 33% Sb. Such high-grade tenor ranks among the best globally for antimony deposits and underscores the project's potential economic viability.

Geologically, the mineralisation occurs within a laterally extensive footprint approximately 3.5 km by 1.5 km, hosted in multiple stacked horizons within a felsic lapilli tuff horizon. This horizon acts as a predictable and mappable host, facilitating targeted exploration. The mineral system exhibits characteristics of a hybrid epizonal orogenic and epithermal deposit, combining structural controls typical of mountain-building events with volcanic-related hydrothermal activity. This complexity suggests a long-lived, multi-phase mineralising system capable of producing multiple high-grade zones.

Validation and Next Steps

The exploration results validate the recently announced JORC Exploration Target, providing confidence in the geological model and grade distribution assumptions. Trigg Minerals has completed all necessary legal and third-party due diligence on the claims, which are held through its wholly owned subsidiaries and situated on federal land managed by the Bureau of Land Management and U.S. Forest Services.

Looking ahead, Trigg plans to advance the project with further geological mapping, geophysical surveys, and the preparation of drill sites to test high-priority zones. The company aims to convert the exploration target into a JORC-compliant resource estimate, which will be a critical milestone in assessing the project's development potential.

Managing Director Andre Booyzen highlighted the significance of these findings, stating that Antimony Canyon could become one of the most exciting antimony exploration projects in the United States, given the combination of high grades, geological continuity, and multiple mineralised zones.