CSAMT Survey Reveals 3.4km Hydrothermal Antimony System at Antimony Canyon
Trigg Minerals’ recent geophysical survey at its Utah Antimony Canyon Project reveals a large, well-preserved hydrothermal system, unlocking multiple high-confidence drill targets poised for testing before year-end.
- 43-kilometre CSAMT survey identifies extensive hydrothermal alteration
- Large-scale conductive zones beneath a resistive silica cap mapped
- Multiple feeder fault structures correlate with historic high-grade antimony workings
- High-priority drill targets located at shallow depths of 50 to 150 metres
- Drilling plans underway to test ‘walk-up’ targets imminently
Survey Uncovers a Classic Hydrothermal Signature
Trigg Minerals Limited (ASX – TMG) has announced compelling results from a comprehensive Controlled-Source Audio Magnetotellurics (CSAMT) survey at its flagship Antimony Canyon Project in Utah. Spanning 43 kilometres of survey lines, the geophysical data reveal a textbook hydrothermal system characterized by a resistive silica cap overlaying broad conductive zones indicative of clay alteration. This classic geophysical signature is often associated with mineralising fluids and is a hallmark of prospective antimony deposits.
Structural Insights Highlight Mineralisation Pathways
The survey’s 2D and 3D inversion models have delineated multiple steeply dipping feeder structures; fault and fracture networks; that serve as conduits for mineralising fluids. These feeders align spatially with historic high-grade antimony workings such as the Little Emma and Gem Lode areas, where surface samples previously returned grades up to 14.47% antimony. This correlation provides robust validation of the geophysical interpretation and bolsters confidence in the exploration model.
Shallow, Walk-Up Drill Targets Identified
Crucially, the survey has pinpointed several high-priority drill targets situated at shallow depths ranging from 50 to 150 metres below surface. These targets lie at the intersection of feeder structures and the conductive alteration blanket beneath the silica cap; zones where mineralising fluids are expected to have concentrated metals. The accessibility of these ‘walk-up’ targets enables efficient and cost-effective drilling, which Trigg plans to commence before the end of the year.
Strategic Implications for Antimony Supply
Antimony is a critical mineral with growing demand in flame retardants, batteries, and other industrial applications. Trigg’s identification of a district-scale hydrothermal system over a 3.4 by 3 kilometre corridor underscores the potential for a globally significant deposit in a Tier-1 jurisdiction. The company’s strategic positioning in the US, combined with modern exploration techniques, sets the stage for advancing a conflict-free, Western supply of this critical metal.
Next Steps and Market Outlook
With geophysical groundwork complete, Trigg is finalising its 3D modelling to refine drill locations and orientations. The upcoming maiden drilling campaign will be a pivotal test of the exploration model’s validity and the project’s economic potential. Investors will be watching closely for assay results that could confirm the scale and grade of mineralisation hinted at by the geophysics.
Bottom Line?
Trigg Minerals’ geophysical breakthrough sets the stage for a decisive drilling campaign that could reshape antimony supply dynamics.
Questions in the middle?
- Will drilling confirm the extent and grade of antimony mineralisation indicated by the CSAMT survey?
- How quickly can Trigg navigate permitting challenges on federal land to commence drilling?
- What are the implications of these findings for Trigg’s broader critical minerals strategy in the US?