Thunderbird Resources Ltd Accelerates Gold Exploration Programme

Geophysical Survey Unveils Compelling Drill Targets in NSW

Thunderbird Resources Limited (ASX: THB) has announced outstanding results from its recently completed Gradient Array IP/Resistivity (GAIP) survey at the 100%-owned Kookabookra Gold Project in north-eastern NSW.

The survey, completed in early July, has successfully identified several significant chargeability anomalies at both the Mt Secret and Mannix prospects. These anomalies are considered highly promising drill targets as they indicate potential sulphide concentrations – often associated with gold mineralisation in intrusion-related and orogenic gold systems similar to the nearby Hillgrove Au-Sb Project.

What makes these results particularly encouraging is their location in geologically favorable settings and their proximity to existing gold targets at Kookynie and other gold-in-soil anomalies that have either been partially tested or remain completely untested by previous explorers.

"These are outstanding results which highlight the huge potential at Kookabookra. The combination of the results, the highly favourable geology and the known mineralisation in the area demonstrates that there is clearly immense exploration upside at both these prospects," stated Executive Chairman George Ventouras.

Mt Secret Prospect: Untested Targets in Prime Geological Setting

At Mt Secret, three significant chargeability anomalies (>10msec) have been identified:

• One anomaly is located in the north, immediately along strike from historical mine workings and coincident with a >10ppb Au soil anomaly
• Two larger anomalies in the south-west have never been drill-tested
• The largest of these anomalies has a strike length of approximately 170m

Critically, these southern anomalies occur in a highly favorable geological setting – adjacent to the Glen Bluff Fault, an interpreted NE-trending fault, and at a geological contact interpreted from resistivity data. This setting represents a prime structural environment for gold mineralisation.

Previous drilling near the historical Mt Secret mine workings returned results of up to 17m @ 0.43 g/t Au from 10m and 6m @ 0.67 g/t Au from 69m, but did not test the newly identified chargeability anomalies.

Mannix Prospect: Promising Targets Near Known Gold Mineralisation

At Mannix, chargeability anomalies are located in the southern and south-western parts of the survey area. Notably, these anomalies are adjacent to a gold-in-soil geochemical anomaly (>10ppb Au, up to 120ppb Au) that has never been drill-tested.

Previous drilling at Mannix focused on a different gold-in-soil anomaly to the north, where all 12 historical drill holes intersected low-grade gold mineralisation, including:

• 12m @ 0.53 g/t Au from 10m (ending in mineralisation of 1m @ 1.62 g/t Au)
• 15m @ 0.37 g/t Au from 7m (ending in mineralisation of 1m @ 3.42 g/t Au)

Significantly, the area containing the newly identified chargeability anomalies has never been drilled, presenting an exciting opportunity for Thunderbird's upcoming exploration program. In fact, similar to Matsa Resources' high-grade gold hits, these untested targets represent significant exploration potential.

Understanding Chargeability in Gold Exploration

Chargeability is a geophysical property measured during IP surveys that indicates the presence of electrically polarizable materials in the subsurface, typically sulphide minerals. In gold exploration, chargeability anomalies are valuable targeting tools because gold mineralisation is commonly associated with sulphides like pyrite and arsenopyrite.

Chargeability measurements work by applying an electrical current to the ground and then measuring how long it takes for the voltage to decay after the current is switched off. Materials with high chargeability, such as sulphide minerals, retain this electrical charge longer than surrounding rocks.

At Kookabookra, the correlation between chargeability and gold mineralisation is particularly relevant as similar relationships have been demonstrated at nearby projects. Larvotto Resources recently confirmed a strong correlation between chargeability and gold-antimony mineralisation at their Hillgrove Sb-Au Project, located approximately 60km south of Kookabookra.

For investors, chargeability anomalies represent potential drill targets that can be directly tested to determine if they host economic gold mineralisation.

Exploration Timeline and Next Steps

Thunderbird Resources is advancing multiple work streams to prepare for its maiden drilling program at Kookabookra:

1. Planning for RC drilling at Mannix and Mt Secret is underway
2. Drill permit applications will be submitted in August
3. Maiden drilling is scheduled to commence in Q4 2025
4. Focus is shifting to the Bear Hill-Butchers Reef area, where rock chip samples have returned high-grade assays up to 11.65g/t Au
5. Geochemical soil sampling and geological mapping at Bear Hill is planned to commence in August

The company's methodical approach to exploration, combining geophysical surveys with surface geochemistry and geological mapping, positions it well to efficiently test these promising targets. Furthermore, this approach is similar to Hammer Metals' discovery of powerful EM conductors which led to the identification of significant gold targets.

"Given that these targets are contained within a small portion of the overall tenement area, the potential elsewhere at Kookabookra is significant," noted Ventouras.

Investment Perspective: Why Kookabookra Matters

Thunderbird's Kookabookra Project represents a significant exploration opportunity for several reasons:

1. Strategic Location: The project is situated in the prolific New England Orogen, which hosts numerous gold and antimony deposits
2. Historical Production: The Bear Hill area within the project has historical production exceeding 3,000oz of gold at grades averaging 28g/t
3. Multiple Target Areas: The current IP survey covered only a small portion of the overall tenement area, suggesting significant additional exploration potential
4. Systematic Approach: The company is employing modern exploration techniques in an area that hasn't seen comprehensive modern exploration
5. Near-Term Catalysts: With drilling planned for Q4 2025, investors can expect regular news flow from the project

Gold Exploration at Thunderbird Resources Ltd

Gold exploration at Thunderbird Resources Ltd follows a systematic approach that combines multiple exploration techniques to build target confidence before drilling. The company's Kookabookra Project demonstrates this methodology through:

1. Historical data compilation: The company has thoroughly reviewed historical mining and exploration records to identify areas of known mineralisation.

2. Surface geochemistry: Soil sampling has identified multiple gold anomalies across the project area, with values up to 120ppb Au at Mannix.

3. Geophysical surveys: The recent IP/Resistivity survey has identified chargeability anomalies that correlate with geologically favorable settings and existing geochemical anomalies.

4. Geological mapping: Ongoing field work is helping to refine the structural and lithological controls on gold mineralisation.

This multi-disciplinary approach to gold exploration at Thunderbird Resources Ltd maximises the probability of exploration success while minimising expenditure on unsuccessful drill holes. Additionally, this approach has similarities to Great Boulder Resources' new gold targets at their Side Well Project.

Why Investors Should Follow Thunderbird Resources

Thunderbird Resources offers investors exposure to a diversified portfolio of critical minerals projects with near-term exploration catalysts:

1. Gold-Antimony Focus: The company's NSW projects (Rockvale and Kookabookra) are located near Australia's largest antimony deposit at Hillgrove
2. Uranium Exposure: Thunderbird also holds an extensive portfolio of uranium projects in Canada's Athabasca Basin, including the Hidden Bay Project where drilling was recently completed
3. Active Exploration: With multiple work programs underway and maiden drilling at Kookabookra planned for Q4 2025, there are numerous potential value-creating catalysts ahead
4. Experienced Team: The company's technical team has demonstrated a methodical approach to exploration, building target inventory through multiple techniques before drill-testing

For investors seeking exposure to both precious metals and critical minerals essential to the global energy transition, Thunderbird Resources presents a compelling opportunity with significant exploration upside and regular news flow expected in the coming months. Moreover, investors should note that companies with high-grade gold results like those at Riversgold's Northern Zone project often attract significant market attention.

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