Yandal Resources Extends Arrakis Gold Discovery to Significant Depth

Yandal Resources Scores Major Depth Extension at Arrakis Gold Discovery

Yandal Resources Limited (ASX: YRL) has announced significant results from its inaugural diamond drilling programme at the Arrakis gold discovery, with the standout result of 17.7m @ 1.4g/t Au including 7.95m @ 2.5g/t Au demonstrating the deposit's impressive depth potential. This intercept sits approximately 120 metres below previously reported high-grade zones, validating the company's geological model and confirming the mineralised system's substantial scale.

The diamond drilling success follows earlier breakthrough results from reverse circulation (RC) drilling that returned 56.5m @ 1.3g/t Au including 14.75m @ 3.3g/t Au. These exceptional results establish the Arrakis gold discovery Yandal Resources Ltd as one of the most promising gold discoveries in Western Australia's prolific Yandal Greenstone Belt.

Furthermore, these latest results provide critical validation of the company's exploration strategy. The depth extension confirms that mineralisation continues well below surface zones, significantly enhancing the discovery's economic potential.

"This is an excellent result from our first full diamond test of Arrakis. The results, combined with geological observations, validate the recently developed geological model and confirm mineralisation can be readily identified through visual observations within fresh rock," said Chris Oorschot, Managing Director.

Two Distinct Mineralisation Styles Emerge at Arrakis

The diamond drilling programme has revealed critical geological insights that strengthen the Arrakis gold discovery development potential. Visual inspection of the diamond core has identified two distinct mineralisation styles that provide a framework for future exploration targeting.

The first style comprises broad, lower-grade mineralisation hosted within altered volcanic-sedimentary rocks. These zones feature chlorite-biotite-filled fractures containing scattered pyrite minerals, indicating widespread hydrothermal alteration processes.

In addition, the second style involves higher-grade mineralisation associated with intense fracturing and deformation. These zones exhibit strong silica-pyrite alteration, often disrupted and mixed with surrounding basalts and dolerites.

This geological understanding enables more targeted exploration and provides a framework for future resource definition across the >2.2km striking mineralised trend. Moreover, the identification of visual gold within diamond core samples provides confidence in the geological model.

Key Drilling Results Comparison

What Makes This Discovery Significant for Investors?

The Arrakis gold discovery Yandal Resources Ltd represents a compelling investment opportunity due to several key factors. The discovery demonstrates substantial scale potential with intercepts extending over significant widths and depths.

However, the most important aspect is the visual identification of gold mineralisation within fresh rock. This characteristic reduces exploration risk and provides confidence in future drilling programmes across the extensive strike length.

Furthermore, the combination of both broad, lower-grade and narrow, higher-grade mineralisation styles suggests multiple mining scenarios. The broader zones indicate potential for large-tonnage resources, while higher-grade zones suggest selective mining opportunities.

Accelerated Exploration Programme Underway

Yandal has mobilised a second RC drilling rig to accelerate the current programme, targeting completion of 200-metre spaced drill lines across the full 2.2km Arrakis strike length. The company expects to complete approximately 5,000 metres of RC drilling before the Christmas break.

Moreover, results will flow through December and January 2026, providing multiple catalysts for share price performance. The accelerated programme reflects management's confidence in the discovery's potential and commitment to rapid resource definition.

Upcoming Catalysts Timeline

The following catalysts are expected over the coming months:

• December 2025: Additional diamond drilling results from remaining seven holes
• Late December 2025: RC drilling results from accelerated programme
• January 2026: Air-core results from southeast extensions
• Early 2026: Installation of 21-person exploration camp
• Q1 2026: Expanded multi-rig drilling programmes

The company has secured a transportable 21-person exploration camp for installation in early 2026. This represents a significant infrastructure upgrade that will support expanded drilling operations and larger field teams.

Understanding Estimated True Width (ETW)

Estimated True Width represents the actual thickness of mineralised zones after accounting for the angle between drill holes and geological structures. For instance, whilst Yandal's diamond hole intersected 17.7 metres of mineralisation downhole, the estimated true width of 10-14 metres reflects the actual geological thickness.

This distinction matters for investors because true width provides a more accurate representation of the deposit's size and mining potential. The strong correlation between downhole intercepts and estimated true widths suggests robust, substantial mineralisation rather than narrow veins.

Key Technical Terminology

Understanding these technical terms helps investors evaluate the discovery's significance:

• Diamond drilling: A method that extracts solid rock cores, allowing geologists to examine actual rock structure and mineralisation
• Reverse circulation drilling: A faster, less expensive drilling method that provides rock chips rather than solid core
• Pyrite: An iron sulphide mineral often associated with gold mineralisation in this geological setting
• Strike length: The horizontal distance over which mineralisation extends along its trend direction

Strategic Position in Premier Gold District

Yandal Resources operates within the Yandal Greenstone Belt, one of Western Australia's most productive gold regions. This proven district hosts major deposits including Jundee (Northern Star Resources), Wiluna (Wiluna Mining), and Bronzewing (Navigator Resources).

The company's strategic landholding spans multiple exploration targets across this proven gold district. However, the Arrakis gold discovery has emerged as the flagship discovery, demonstrating the highest-grade intercepts to date.

Current mineral resources across the portfolio total 450,200 ounces at 1.3g/t Au. This existing resource base provides a foundation for the company's exploration programmes and potential future development scenarios.

Why Should Investors Track Yandal Resources?

The Arrakis gold discovery Yandal Resources Ltd has positioned itself as a compelling growth story in the Australian gold sector through several key differentiators. These factors distinguish the company from typical junior exploration plays.

✓ Tier-1 Location: Operations in the proven Yandal Greenstone Belt with excellent infrastructure access provide significant operational advantages.

✓ Discovery Momentum: Arrakis represents a genuine new discovery with significant scale potential across 2.2km+ of strike length.

✓ Strong Cash Position: Well-funded exploration programmes with no immediate capital requirements ensure continued operations.

✓ Experienced Team: Management with proven track record in Western Australian gold exploration reduces execution risk.

✓ Multiple Catalysts: High-volume results flow expected through to mid-2026 provides ongoing newsflow.

Investment Thesis Factors

The combination of visible gold mineralisation, substantial intercept widths, and depth extension potential positions Arrakis as one of the more exciting gold discoveries in Western Australia. Visual identification of gold within diamond core samples provides confidence in the geological model.

Additionally, the establishment of two distinct mineralisation styles enables more targeted exploration approaches. The broader, lower-grade style suggests potential for large-tonnage resources, whilst the higher-grade zones indicate selective mining opportunities.

However, investors should note that exploration remains at an early stage. Nevertheless, with exploration set to accelerate significantly in 2026 through expanded camp facilities and multi-rig programmes, regular news flow is expected.

What Happens Next for Arrakis?

The immediate focus involves completing the current 5,000-metre RC drilling programme before the Christmas break. Furthermore, seven additional diamond holes remain to be assayed, with results expected throughout December 2025.

In addition, the installation of the 21-person exploration camp in early 2026 will enable year-round operations. This infrastructure upgrade supports the planned expansion to multi-rig drilling programmes across the full strike length.

Moreover, air-core drilling will test southeast extensions of the mineralised system. These programmes aim to define the full extent of mineralisation and identify additional high-priority targets.

The company's systematic approach to exploration reflects management's confidence in the discovery's potential. With substantial strike length remaining to be tested, the Arrakis gold discovery offers significant upside potential for patient investors.

Key Takeaway: Yandal Resources has demonstrated significant depth extension at Arrakis with strong diamond drilling results validating the geological model. With 2.2km+ of strike length to test and expanded exploration capabilities coming online in 2026, the company offers compelling exposure to a potential major gold discovery in a premier mining district.

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