Trigg Minerals (ASX:TMG) confirms major high-grade extension at Antimony Canyon

Trigg Minerals (ASX:TMG) has reported a strong set of Phase Two sampling results from the Antimony Canyon Project in Utah, confirming both the continuity of bonanza-grade mineralisation within the core area and the discovery of a significant northern extension that materially expands the project footprint.

The program comprised 104 channel and rock chip samples taken across the Little Emma, Gem, Star, Pluto and Nevada workings, as well as the newly identified Northern Extension where several high grade assays have been recorded.

These results strengthen the Company’s understanding of the geological controls, reinforce the scale of the system, and provide clear technical direction as preparations advance for the maiden drilling program.

Managing Director Andre Booyzen addresses the key investor questions arising from the announcement and outlines how these results contribute to a more defined and technically supported exploration model.

What is the significance of the newly identified northern extension and how does it change the scale of the Antimony Canyon system?

The Northern Extension represents a substantial advancement in our understanding of the Antimony Canyon system because it confirms that high grade antimony mineralisation extends beyond the previously recognised project boundary.

The area has returned several strong assays, including 3.59%, 2.62%, 2.38% and 2.18% antimony. These results sit along the projection of a regional CSAMT conductor that measures approximately 2.5 kilometres by 1 kilometre, and importantly, the extension aligns with mapped splays of the Paunsaugunt Fault.

This structural setting demonstrates that the same controls operating within the core project area continue northwards, which expands the mineralised strike to more than 3.5 kilometres.

The westernmost sample in the extension, which recorded the highest grade in that cluster, lies directly above the projected continuation of the Paunsaugunt Fault and the Navajo hogback.

This provides a strong indication that the hydrothermal system has significantly more scale than historical mapping suggested and that the northern corridor has not been evaluated with modern exploration.

“Identifying high grade antimony associated with a CSAMT conductor in the newly defined northern extension supports our district scale exploration model.”

How do the bonanza grade antimony results improve confidence in the geological model?

The bonanza grade results add substantial confidence to the geological model because they confirm that high grade stibnite is persistent and consistently associated with specific geological positions across multiple mine workings.

The highest grade from the program was 29.4% antimony at Little Emma, and this was returned from a channel sample, which provides a more representative measure of grade across a defined width.

Additional outcomes included 25.24% at Pluto and 17.94% at Gem, as well as a series of samples with antimony above 1% across the broader area.

These results were part of a systematic program of 104 samples.

Many of the highest grades occurred within the same lithological unit, demonstrating a strong and repeatable geological control.

The results confirm that the earlier high grade values were not isolated occurrences but part of a larger and cohesive mineralised system.

“It confirms that the high grades reported in our first program are not isolated incidents but are part of a robust, high grade mineralising system.”

Why is the confirmation of the Salt n Pepper tuff as the primary host unit important for future exploration targeting?

Confirmation of the Salt n Pepper tuff as the main host for high grade mineralisation is one of the most important outcomes of the program because it provides a consistent and mappable stratigraphic target that can be traced across the project area.

This brittle felsic unit allowed hydrothermal fluids to penetrate and deposit stibnite through veins, veinlets and patches.

Many of the highest grade samples, including 29.39%, 18.69%, 17.94%, 8.30%, 3.93% and 2.95% antimony, were located within this horizon.

At the Gem Mine, nine channel samples across the Salt n Pepper tuff averaged 3.07% antimony, demonstrating continuity and strong grade.

This confirms that high grade mineralisation is not random but is associated with a predictable stratabound position.

As a result, exploration can now focus on tracing and testing this horizon across the project’s full 3.5 kilometre strike.

“We have now confirmed that the Salt n Pepper tuff is our main host rock for high grade stibnite. This is a game changer for exploration. It shifts the project from reconnaissance to delineation.”

What does the geochemical data reveal about potential deleterious elements such as arsenic and mercury within the high grade zones?

The geochemical results offer a clearer understanding of how antimony correlates with associated elements like arsenic and mercury.

Although these elements exist within the wider hydrothermal setting, they do not always appear together with high-grade antimony.

In the highest-grade zones, particularly those interpreted as closer to feeder structures, the ratios of mercury and arsenic relative to antimony are low.

For example, the Star Mine showed high antimony values with relatively low mercury, while the Pluto area had elevated mercury in some samples, including 72.2 parts per million in sample 2026176.

The data also suggests that arsenic does not appear to be in solid solution with stibnite in the highest grade areas and may occur in separate mineral phases.

Although still at an early stage, understanding how the target and deleterious elements relate and are distributed can guide more effective mining and processing.

This insight can promote customised metallurgical strategies that enhance recovery and minimise environmental impact.

What are the next steps for Trigg Minerals and what will the maiden drilling program be designed to test?

The next stage for the project is the maiden drilling program, which is now being finalised.

This drilling will be designed to test the depth extension of the high grade shoots at the Gem and Emma Mine zone, where consistent high grade samples have been recorded within the Salt n Pepper tuff.

It will also evaluate the projected structural and geophysical controls highlighted by the CSAMT conductor in the Gem Mine area.

This will be the first modern drill program undertaken at Antimony Canyon and will provide essential subsurface data to confirm the geometry, thickness, and continuity of the high grade zones.

The targets identified through the Phase Two program give the Company high confidence in the technical rationale behind the planned drilling.

“These new results are outstanding, with bonanza grades of twenty nine percent antimony, which is a fantastic outcome, but doing so within a systematic channel sampling program is even more significant.”

Positioning Trigg for its first modern drill program

The Phase Two sampling program has allowed Trigg Minerals to advance the Antimony Canyon Project with enhanced geological clarity and greater confidence.

The confirmation of high grade mineralisation across multiple historic workings, the discovery of a significant new extension, and the validation of the Salt n Pepper tuff as the primary host unit provide strong evidence of a large and structurally controlled hydrothermal system.

These results, supported by the structural insights from the CSAMT data and the geochemical domain definitions, deliver a refined and technically supported exploration model.

As Managing Director Andre Booyzen outlines, the project is now positioned to move into its next major phase with a suite of clearly defined, drill ready targets.

The maiden drilling program will be pivotal in determining the scale, continuity and depth potential of this high grade antimony system, marking a significant milestone in the progression of one of the most important undeveloped antimony projects in the United States.

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