TechGen Metals Blue Devil Maiden Drilling Targets 42.6% Copper Gossan

TechGen Metals Blue Devil Copper Gold Maiden Drilling Results

TechGen Metals Ltd (ASX: TG1) has reported new rock chip assays from the Red Devil Prospect that confirm a high-grade copper gold gossan extending the mineralised shear zone to approximately 1.8 kilometres at the 100% owned Blue Devil Copper Gold Project in Western Australia. The TechGen Metals Blue Devil copper gold maiden drilling results are now drawing significant investor attention, as these surface outcomes materially strengthen two drill-ready targets ahead of the first ever subsurface test of these prospects in the Halls Creek Orogen.

The latest surface results include peak values of 42.6% copper (Cu) and 4.56 g/t gold (Au). Furthermore, all earthworks and approvals for drilling are reported as complete, with maiden drilling set to provide a genuine geological milestone.

"These new results continue to strengthen our confidence that Red Devil is part of a copper-gold mineral system, with imminent drilling having the final say. Extending the mineralised trend to approximately 1.8 kilometres immediately ahead of our maiden drilling is exactly the type of result we were hoping to see. This target remains completely undrilled despite exceptional historical surface grades and combined with new compelling geophysical targets. Importantly, the new high-grade assays simply strengthen our confidence in the IP target, the scale and dimensions of the target haven't changed," said Ashley Hood, Managing Director of TechGen Metals Ltd.

What Do the New Assays Show?

Recent geological mapping and rock chip sampling at Red Devil were completed in late June 2026. Sixteen samples were collected, with 14 samples taken from iron and quartz rich gossanous outcrops.

According to the ASX announcement, 9 of these 14 gossan samples returned assays above 1% Cu, indicating robust copper mineralisation in surface material.

Selected High-Grade Rock Chip Results from Red Devil (New Sampling)

Several important technical observations are highlighted by TechGen Metals Ltd:

• High copper grades: Best Cu values of 42.6%, 38.3%, 36.2% and 30.6%.
• Best gold value: 4.56 g/t Au in sample BDR036.
• Pathfinder relationship: Several high copper samples (including BDR040, BDR043, BDR044, BDR045, BDR046) returned phosphorous (P) >10,000 ppm, consistent with a known geochemical association at the project.
• Elevated sulphur: Samples BDR041 and BDR043 contain >30% Cu and elevated sulphur (up to 4.06% S), interpreted by the company as consistent with primary sulphide mineralisation at depth.

These new results sit alongside previously reported historical rock chips at Red Devil, where peak assays reached 52.3% Cu and 5.35 g/t Au in cross-cutting structures above and adjacent to the shear zone.

For investors, such surface grades indicate a strongly mineralised system at outcrop level. However, rock chip samples are selective and are not representative of average grades across the broader zone. Consequently, the upcoming drilling programme is expected to provide the first indication of continuity and thickness at depth.

Red Devil: A 1.8 km Copper Gold Shear with an IP Target at Depth

The Red Devil Prospect is centred on a northwest-southeast striking shear zone marked by outcropping iron-quartz copper gold gossans. According to TechGen Metals Ltd, rock chip sampling has now confirmed +1% Cu rock chips across a strike length of approximately 1.8 km.

This lateral continuity of copper-bearing gossans is an important factor for investors assessing scale potential. Beneath this surface corridor, TechGen Metals Ltd has completed an Induced Polarisation (IP) geophysical survey targeting sulphide-rich zones.

Key Red Devil IP Parameters (Company Reported)

The IP anomaly aligns with the mapped shear and gossan trend. Furthermore, the company notes that the IP anomalism correlates with high resistivity in basement rocks, which can be favourable for detecting contrasting sulphide bodies.

From an investment perspective, the combination of:

• High-grade copper gold rock chips at surface,
• A 1.8 km mineralised shear zone, and
• A high-amplitude, discrete IP anomaly at drillable depths,

presents a coherent geological target that is about to be tested for the first time.

Blue Devil: EM Conductors Above an Interpreted Intrusion

While Red Devil is defined by IP and gossan mapping, the Blue Devil target is characterised by airborne electromagnetic (EM) and magnetic data. TechGen Metals Ltd reports that an airborne EM and magnetic survey across part of the project identified:

• Three strong, discrete, late-time EM conductors.
• These sit approximately 150 m above an interpreted magnetic intrusion.
• The EM conductors are coincident with anomalous surface geochemistry in copper, gold and key pathfinder elements.

An independent external geochemist has considered the Blue Devil Project prospective for several intrusion-related mineralisation styles, including:

1. Porphyry copper gold deposits
2. Iron oxide copper gold (IOCG) deposits
3. Intrusion related gold deposits
4. Copper gold skarn deposits

These deposit styles are typically associated with large intrusive systems and can host deposits of substantial tonnage. At this stage, the EM conductors at Blue Devil have never been drill tested, meaning maiden drilling will provide the first indication of whether these conductors relate to sulphide mineralisation or other conductive materials such as graphite.

Educational Focus: Understanding Gossans and Geophysical Targets

To interpret the technical content of the announcement, it is useful to clarify several key exploration concepts.

What Is a Gossan and Why Is It Important?

A gossan is the rusty, iron-rich, often quartz-rich material that forms at surface when sulphide minerals weather over very long periods.

• Sulphide minerals containing copper, gold and other metals are broken down by oxygen and water.
• Sulphur is removed, while iron and silica remain at surface as a hard, often stained cap.
• Metals such as copper may be partly leached or re-concentrated near surface.

Gossans are important because they can mark the surface expression of a sulphide-rich ore body at depth. When gossans return high copper and gold assays, as at Red Devil, they may indicate that more extensive primary sulphide mineralisation exists below the oxidised zone.

What Is Induced Polarisation (IP)?

Induced Polarisation (IP) is a geophysical survey method used to detect rocks that can temporarily hold an electrical charge.

• Electrodes are placed in the ground and a current is passed between them.
• When the current is switched off, some rocks release the stored charge slowly.
• This delayed response is measured as chargeability, usually expressed in millivolts per volt (mV/V).

Sulphide minerals, which often host copper and gold, typically have high chargeability compared with surrounding rocks. At Red Devil, the reported core IP zone of 30–35 mV/V, compared with background levels below 10 mV/V, suggests a body that may be sulphide-rich.

What Is an EM Conductor?

An electromagnetic (EM) survey uses a changing magnetic field in the air (airborne EM) or on the ground to induce electrical currents in the subsurface.

• Materials that conduct electricity well, such as massive sulphides or graphite, respond strongly.
• These responses are known as EM conductors.

At Blue Devil, three strong, discrete, late-time EM conductors have been mapped. Their location, approximately 150 m above an interpreted intrusive body and coincident with anomalous copper and gold in surface samples, makes them priority drill targets according to TechGen Metals Ltd.

Key Exploration Terms: Quick Glossary

Technical glossary

• Gossan: Iron-rich, weathered cap that may indicate a sulphide body at depth.
• IP (Induced Polarisation): A geophysical method that measures how well rocks hold and release an electrical charge, often highlighting sulphides.
• Chargeability (mV/V): Number used to express how responsive rocks are in an IP survey; higher values often relate to sulphide minerals.
• EM conductor: Subsurface feature that responds strongly in an EM survey, possibly indicating massive sulphides or graphite.
• Pathfinder elements: Elements such as phosphorous or silver that commonly occur with target metals and can indicate mineralised systems.
• Supergene enrichment: Near-surface concentration of metals due to weathering and movement of fluids.

Project Setting and Ownership

The Blue Devil Copper Gold Project is located in the Halls Creek Orogen in the East Kimberley region of Western Australia. Key tenure details reported by TechGen Metals Ltd include:

• Exploration licences E80/6047, E80/6084 and exploration licence application E80/6101.
• Combined project area of 195 km².
• 100% ownership by TechGen Metals Ltd.

The region has a history of exploration for diamonds, base metals and gold, with prior work over parts of the current tenure conducted by companies including Sipa Gaia NL and Spartan Exploration Pty Ltd. In addition, an external independent geochemist has assessed the project as prospective for intrusion-related copper and gold systems, covering porphyry, IOCG, intrusion-related gold and skarn styles.

Drilling Readiness and Upcoming Catalysts

TechGen Metals Ltd reports that preparatory work for maiden drilling at Blue Devil and Red Devil is complete:

• Programme of Work (POW): Approved.
• Heritage surveys: Completed over the target areas.
• Site earthworks: Completed, including access and drill pads.

The next steps outlined by the company are:

Maiden drilling at both prospects will represent the first ever drill test of these copper gold targets. From an investor standpoint, this represents a clear near-term catalyst. The surface and geophysical data provide the geological framework, however drill core and associated assays will ultimately be required to assess thickness, continuity and potential economic relevance of any mineralisation encountered.

Investment Context: How the Results Frame the Thesis

While the announcement does not provide financial data, several themes are relevant for investors monitoring TechGen Metals Ltd:

1. High-grade surface assays — Multiple rock chip samples at Red Devil exceed 30% Cu, with gold up to 4.56 g/t Au in the latest results and historical values to 52.3% Cu and 5.35 g/t Au. These values point to a strongly mineralised system at surface, although selectivity of sampling means grades cannot be extrapolated without drilling.

2. Scale and structural continuity — The confirmed 1.8 km strike length of +1% Cu rock chips along a defined shear zone provides scale that some investors may consider important when assessing discovery potential. Furthermore, the presence of a discrete IP anomaly at depth beneath this trend adds support to the structural interpretation.

3. Multiple untested geophysical targets — At Red Devil, the IP chargeability core (30–35 mV/V) lies at depths broadly suitable for conventional reverse circulation or diamond drilling. At Blue Devil, three strong EM conductors over an interpreted intrusion provide an independent target set.

4. Timing of news flow — With regulatory and heritage approvals in place and earthworks completed, TechGen Metals Ltd appears positioned for a period of increased operational activity. The sequence of drill mobilisation, drilling commencement and subsequent assays may create a series of data points for the market over the short to medium term.

5. Commodity exposure — The project is focused on copper and gold, two commodities closely followed by investors due to their roles in electrification (copper) and as a traditional store of value (gold).

Why TechGen Metals Ltd May Warrant Continued Investor Attention

According to its ASX disclosures, TechGen Metals Ltd has assembled a copper gold exploration position in the Halls Creek Orogen with 100% ownership of a 195 km² land package. Two drill-ready, previously undrilled targets feature high-grade gossan samples at surface, IP and EM anomalies at depth, and an interpreted intrusive system potentially capable of hosting several deposit styles.

The new rock chip results, particularly 42.6% Cu and 4.56 g/t Au, extend the known mineralised trend at Red Devil to 1.8 km and support the company's view that the area may be part of a broader copper gold system.

The key test for TechGen Metals Blue Devil copper gold maiden drilling results now moves from surface sampling and geophysical interpretation to drill validation. For investors, the upcoming programme and subsequent assays are likely to be the critical data points for evaluating the geological model and any future development potential at the Blue Devil Copper Gold Project.

Ready to Follow TechGen Metals' Maiden Drilling Campaign at Blue Devil?

With all approvals secured, earthworks complete, and maiden drilling imminent at both the Red Devil and Blue Devil prospects, TechGen Metals Ltd (ASX: TG1) is approaching a genuine geological milestone at its 100% owned Blue Devil Copper Gold Project. Surface rock chip results of up to 42.6% Cu and 4.56 g/t Au across a 1.8 km mineralised shear zone, combined with compelling IP and EM targets at drillable depths, set the stage for what could be a series of significant market catalysts in the near term. Investors seeking to learn more about TechGen Metals, its Blue Devil Copper Gold Project, and the upcoming maiden drilling programme can visit techgenmetals.com.au for the latest company updates and ASX announcements.