Taiton Resources Identifies Hydrothermal Gold System at Highway Project

Taiton Resources Identifies Broad Hydrothermal Gold System at Highway Project

Taiton Resources Ltd (ASX: T88) has reported assay results from its first diamond drill hole at the Yogi prospect within the Highway Copper-Gold Project in South Australia. The single 810.4 metre hole was drilled to test a gravity anomaly for Iron Oxide Copper-Gold (IOCG)-style mineralisation. Taiton Resources identifies hydrothermal gold system at Highway Project as the headline outcome of this campaign, reshaping the next phase of exploration at the site.

According to the 24 June 2026 ASX update, the drilling did not support the original IOCG target interpretation at Yogi. Instead, Taiton Resources Ltd has identified a broad hydrothermal system with gold pathfinder anomalism and evidence for a possible intrusion-related gold setting. This outcome is now shaping the next phase of surface-focused exploration at the project.

One Target Closes, Another Opens

The Yogi drill programme comprised a single diamond drill hole, HDD26-01, designed to intersect a gravity anomaly previously reported by Taiton Resources Ltd in September 2024. The gravity feature was initially considered prospective for IOCG-type mineralisation, similar in style to deposits within the wider Gawler Craton.

Key drilling parameters for HDD26-01:

Drilling intersected a thick sequence of basaltic volcanic rocks with extensive alteration. Taiton Resources Ltd reports that the gravity anomaly is now attributed to:

• A thicker sequence of dense basalt, possibly a deeper-seated feeder structure, or
• A basalt flow trough, with internal density variations linked to more iron-rich tholeiitic basalt.

Alteration characteristics in HDD26-01 are not considered supportive of an IOCG-style system at Yogi. However, the geological and geochemical data point to a different mineralisation model that is of significant interest for gold-focused exploration.

What the Drill Hole Actually Found: A Fertile Hydrothermal Footprint

Hydrothermal Alteration and Structure

Throughout HDD26-01, Taiton Resources Ltd reports pervasive chlorite-carbonate alteration with subordinate amphibole, epidote and albite. Localised mica and pyrite are associated with quartz veining and shearing.

These features are interpreted as products of a hydrothermal event affecting tholeiitic basalt. In practical terms, this means hot, mineral-rich fluids have passed through the rocks, leaving a characteristic alteration footprint.

The company highlights:

• Broad propylitic alteration (chlorite-epidote–carbonate ± albite)
• Intermittent shear zones with quartz veining, pyrite and sericite
• Evidence for multiple phases of quartz-carbonate veining (e.g. between 44.3 m and 53.1 m)
• Shear-related quartz breccia with pyrite stringers and silicification at several depths, including around 173.45 m to 177.1 m

These features collectively indicate a large hydrothermal system that has affected much of the drilled basalt sequence.

Pathfinder Element Anomalism

Selective sampling of zones with stronger alteration and deformation was completed along HDD26-01. From 217 samples, Taiton Resources Ltd reports anomalous pathfinder elements commonly associated with precious metal-bearing fluids.

Summary statistics for key elements (HDD26-01):

One highlighted interval is 3.65 m from 173.45 m, which returned:

• 61.66 ppm As
• 0.44 ppm Bi
• 9.7 ppm Mo
• 3.04 ppm Sb
• 0.2 ppm Te

According to the ASX announcement, the As–Sb–Bi–Te–Mo association is generally recognised as indicative of fertile hydrothermal systems and is commonly associated with precious metal-bearing fluids.

Intrusion-Related Gold Potential

Taiton Resources Ltd also reports the presence of small aplite dykes within HDD26-01. These are interpreted to be derived from Hiltaba Suite Granite, a known mineralising intrusive suite in the Gawler Craton.

The company states that:

• The aplite dykes indicate a proximal felsic intrusion.
• This felsic body is considered a potential driver of mineralising fluids at Yogi.

Taken together, the propylitic alteration, structural veining, multi-element pathfinder anomalism and aplite dykes define a hydrothermal system with an intrusion-related source. The system is interpreted to extend through the full depth of the hole.

The ASX release describes the Yogi pathfinder signature as characteristic of fertile hydrothermal systems often linked to precious metal-bearing fluids, with the presence of aplite dykes from the Hiltaba Suite suggesting an intrusion-related source for the observed alteration and geochemistry.

For investors, this points towards a gold-focused exploration model rather than the originally targeted IOCG model at this prospect.

Educational Section: Understanding Hydrothermal, Intrusion-Related Gold Systems

To place the Highway project results in context, it is useful to outline a few key geological concepts referenced by Taiton Resources Ltd.

What Is a Hydrothermal System?

A hydrothermal system forms when hot fluids move through the Earth's crust. These fluids can carry dissolved metals.

As the fluids cool, or react with the surrounding rocks, they may deposit minerals, including gold, copper and silver. The movement of these fluids often occurs along:

• Fractures and faults
• Shear zones
• Permeable rock layers

The minerals left behind can include:

• Alteration minerals such as chlorite, epidote, carbonate, albite and sericite
• Veins of quartz or quartz-carbonate, sometimes with sulphides like pyrite

Geologists map these alteration patterns to understand where the fluids flowed and where metals might have accumulated in higher concentrations.

What Are Pathfinder Elements?

Pathfinder elements are elements that are often found with gold in mineralising systems, but are usually more abundant or easier to detect. They provide indirect evidence that gold-bearing fluids may have been present, even if initial gold assays are low.

Pathfinders reported at Yogi include:

• Arsenic (As)
• Antimony (Sb)
• Bismuth (Bi)
• Tellurium (Te)
• Molybdenum (Mo)

When these elements occur together in coherent patterns, they can indicate that a gold-related hydrothermal system has affected an area. Furthermore, exploration geologists use these patterns to guide further sampling and drilling.

What Is the Hiltaba Suite, and Why Does It Matter?

The Hiltaba Suite refers to a group of ancient granitic intrusions, around 1,590 million years old, that are widespread in the Gawler Craton of South Australia. This magmatic event is closely associated with several major deposits in the region, including IOCG and gold systems.

At Yogi, Taiton Resources Ltd has logged aplite dykes interpreted to be derived from the Hiltaba Suite Granite. An aplite dyke is a thin, fine-grained intrusion of light-coloured rock that represents a late-stage product of granitic magma.

Their presence suggests:

• The drill hole is close to a felsic (silica-rich) intrusion.
• This intrusion may have provided heat and fluids that drove the hydrothermal system.

For investors, an interpreted link to the Hiltaba Suite connects the Yogi hydrothermal system to a regionally important mineralising event, which is why Taiton Resources Ltd is now focusing on intrusion-related gold targeting.

Key Glossary

• IOCG (Iron Oxide Copper-Gold): A deposit type characterised by abundant iron oxide minerals, with copper, gold and sometimes uranium. Olympic Dam is a well-known example.
• Propylitic alteration: A common outer-zone alteration style in hydrothermal systems, typically producing chlorite, epidote, carbonate and albite.
• Tholeiitic basalt: A type of basaltic rock relatively rich in iron; at Yogi this is the main host rock intersected.
• Gravity anomaly: A variation in the Earth's gravity field caused by differences in rock density at depth, used to identify potential dense bodies such as intrusions.

Next Steps: A Focused Gold Exploration Programme at Yogi

Following the HDD26-01 results, Taiton Resources Ltd has outlined a gold-focused exploration plan targeting the broader Yogi prospect area. The company notes that this area currently has little to no surface sampling coverage, which leaves considerable scope for first-pass geochemical discovery.

Planned activities include:

1. Litho-structural reinterpretation

   • Review existing geological and structural data from HDD26-01.
   • Identify lower order structures that may have acted as fluid pathways and potential sites for gold concentration.

2. Reconnaissance soil sampling

   • Implement initial soil sampling across the Yogi area.
   • Aim to detect surface expressions of pathfinder elements (e.g. As, Sb, Bi, Te, Mo) and any associated gold.

3. Infill soil sampling

   • Where anomalies are identified, complete closer spaced sampling to refine targets.
   • Build a clearer geochemical map to guide future drilling.

4. Geophysical data review

   • Reassess existing gravity and magnetic data, particularly TMI RTP magnetic imagery.
   • Focus on structural corridors and potential felsic intrusions interpreted as Hiltaba Suite-related.

Summary of planned work:

All near-term work is surface-based, with no immediate requirement for further deep drilling until new targets are clearly defined.

Highway Project and Broader Portfolio Context

Taiton Resources Ltd holds a ~2,930 km² land position at the Highway Copper-Gold Project in the Gawler Craton. This province hosts several large IOCG deposits, including Olympic Dam, Carrapateena and Prominent Hill.

The current Yogi results provide:

• Evidence of a large, vertically extensive hydrothermal system, with alteration and pathfinder anomalism logged throughout the 810.4 m hole.
• An interpreted link to Hiltaba Suite intrusions, which are associated with major mineral systems in the region.
• A basis for an intrusion-related gold exploration model, complementing the earlier IOCG targeting rationale.

Alongside Highway, Taiton Resources Ltd maintains exposure to other project areas:

For investors assessing Taiton Resources Ltd, this portfolio consequently offers exposure to:

• Early-stage gold and copper exploration in the Gawler Craton.
• Gold and uranium potential at Challenger West.
• Specialty metals (molybdenum and bismuth) and silica at Kingsgate.

Investment Considerations: Why the Yogi Update Matters

From an investor perspective, the 24 June 2026 update on Yogi suggests several points for consideration:

• Model shift, not project failure:
  The IOCG model tested at Yogi is reported as not supported by alteration features in HDD26-01. However, the same drill hole has outlined a broad hydrothermal system with a coherent pathfinder signature, providing a new exploration direction rather than ending the prospect's potential.

• Scale of the hydrothermal system:
  Pervasive alteration and pathfinder anomalism across 810.4 m of core indicate a large-scale system, rather than a small, isolated zone. Large systems can host multiple mineralised centres, even if the first hole does not intersect economic grades.

• Link to regional mineralising event:
  The interpretation of Hiltaba Suite-derived aplite dykes ties the Yogi system into the same magmatic framework as major deposits in the Gawler Craton. This geological context often attracts attention from sector participants.

• Low-cost, high-leverage next steps:
  Planned soil sampling and structural reinterpretation are relatively low-cost exploration tools that can quickly generate new targets. For a company at the stage of Taiton Resources Ltd, such activities can provide regular newsflow without significant capital outlay.

According to the ASX release, Taiton Resources identifies hydrothermal gold system at Highway Project as its reshaped exploration narrative — moving from a single gravity anomaly IOCG test to a broader hydrothermal, intrusion-related gold exploration programme, supported by multi-element pathfinder data and evidence for a nearby felsic intrusion. Upcoming surface sampling over an underexplored structural corridor is positioned as the next major catalyst for defining new drill targets within the Highway project.

Want to Learn More About Taiton Resources and the Highway Project?

With a broad hydrothermal gold system now identified at the Yogi prospect and a refreshed exploration model pointing towards intrusion-related gold, Taiton Resources (ASX: T88) is entering an exciting new phase at its ~2,930 km² Highway Copper-Gold Project. Backed by a diversified portfolio spanning the Gawler Craton and beyond, the company offers investors early-stage exposure to a compelling suite of projects. To learn more about Taiton Resources and follow the next steps in their exploration programme, visit www.taiton.com.au.