Altair Minerals Gold Discovery Defines 4km Strike at South Oko

The Altair Minerals gold discovery at South Oko represents a significant breakthrough in Guyana's emerging gold province. The company has identified two substantial geochemical targets that could reshape its exploration strategy, with the latest soil sampling results defining the W3 Target extending over 2.1km in strike length, alongside the previously established W1 Target spanning 1.9km. Combined, these targets represent the largest coherent gold anomalies identified to date along the strategic Oko Shear Contact.

Major Discovery: Two Tier-1 Geochemical Targets Defined

The completion of Altair's initial South Oko grid has yielded exceptional results, establishing two immediate drill targets that demonstrate significant gold potential. Furthermore, these discoveries validate the company's systematic exploration approach in this challenging geological environment.

W1 Target Specifications:

• Strike extent: ~1.9km
• Classification: Largest coherent >100ppb Au soil anomaly on Oko Shear Contact
• Status: Open to northwest and east
• Gold anomaly: Robust >100ppb Au signature

W3 Target Specifications:

• Strike extent: ~2.1km
• Classification: Extensive 50 to >100ppb Au soil anomaly
• Significance: First coherent target identified through duricrust
• Geological context: Positioned as blind target beneath challenging geological cover

Educational Spotlight: Understanding Duricrust Geology

What is Duricrust?

Duricrust refers to a hardened surficial layer of weathered rock material that commonly develops in tropical environments. This iron and aluminium-rich capping typically acts as a geological "mask," preventing geochemical signatures from underlying mineralisation from reaching the surface.

Why the W3 Discovery Matters:

The W3 anomaly represents a rare geological phenomenon – a gold signature breaking through duricrust cover. According to Altair's announcement, this is "the first occurrence at SOKO where duricrust has generated a clear response," indicating exceptional prospectivity given the covered setting.

Investment Significance:

Duricrust-masked deposits often yield larger, higher-grade discoveries because they remain hidden from conventional exploration methods. Consequently, companies that successfully identify these "blind targets" frequently unlock substantial value through drilling programmes.

Geophysical Validation Strengthens Investment Case

The geochemical anomalies at both W1 and W3 targets demonstrate remarkable correlation with recently identified chargeability and resistivity anomalies from geophysical surveys. This multi-disciplinary validation significantly enhances the probability of successful drill intersections.

The spatial alignment of geochemical and geophysical anomalies suggests potential for a structurally controlled gold system, which historically represents some of the most valuable deposit types in the Guyana Shield.

Strategic Location Within Proven Gold Corridor

Altair's South Oko project sits within the prolific Oko Shear Contact, a geological structure that has already hosted multiple significant discoveries. Moreover, the company's 590km² contiguous landholding positions it just 1.5km from a 5.9Moz discovery scheduled for production within 18 months.

Regional Context & Peer Comparison:

The regional success demonstrates the exceptional prospectivity of Guyana's underexplored greenstone belts, which host extensions of West African Birimian geology responsible for world-class gold discoveries across Ghana, Ivory Coast, and Burkina Faso.

Accelerated Exploration Programme Delivers Results

CEO Faheem Ahmed's leadership has driven exceptional operational efficiency, with Altair's in-country team executing multiple concurrent programmes. In addition, the systematic approach has delivered consistent results across all exploration disciplines.

Current Activity Status:

Trenching Programme:

• Completed: 1.9km across 7 trenches (4 shallow, 3 deep)
• Ongoing: Additional 5km planned
• Results: Pending assays from completed trenches

Soil Sampling:

• Dispatched: 145 samples awaiting results
• Completed this week: 81 additional samples
• Focus: Southern extension targeting new drill sites

Auger Drilling:

• Completed: 4 lines east of Oko Shear Contact
• Pending: 40 holes awaiting assay results
• Active: 3 additional lines on W1 target

Geophysical Surveys:

• Ground magnetics: 91% completion
• Pole-Dipole IP: 67% completion
• Planned: LiDAR and aeromagnetics commencing

Infrastructure Development Positions for Drilling Success

Altair has established robust operational capabilities across both South Oko and North Peters camps. Furthermore, these facilities provide the foundation for sustained exploration programmes across the company's extensive landholding.

South Oko Camp Specifications:

• Capacity: Up to 40 exploration and support personnel
• Status: Fully operational for major drill programmes
• Facilities: Complete accommodation and operational support

North Peters Camp Upgrades:

• New construction: Core shed facility
• Upgrades: Office/admin facilities
• Drill preparation: Pads cleared for April commencement
• Equipment: Diamond drill rig ready for mobilisation

"Both these geochemical targets align spatially with recently identified chargeability and resistivity anomalies. Altair's in-country team has made exceptional progress within a short amount of time – not only advancing geochemical and geophysical programmes, but also managing logistics, constructing infrastructure across two camps."

Investment Thesis: Multiple Catalysts Converging

The Altair Minerals gold discovery presents a compelling investment proposition built on several key pillars. However, the true value lies in the convergence of multiple positive factors that reduce exploration risk whilst maximising discovery potential.

1. Scale & Quality of Targets

The combined 4km of strike length across W1 and W3 targets represents substantial exploration potential, with geochemical signatures comparable to neighbouring discoveries.

2. Geological Validation

Multi-disciplinary confirmation through geochemistry, geophysics, and structural geology significantly reduces exploration risk.

3. Strategic Location

Positioning within proven gold corridor provides access to existing infrastructure and validates regional prospectivity.

4. Execution Capability

Demonstrated operational efficiency in challenging environments, with integrated exploration programmes delivering results ahead of schedule.

5. Near-term Catalysts

April drilling commencement at both South Oko and North Peters provides multiple opportunities for value-creating discoveries.

April Drilling Programme: The Ultimate Test

With drill rigs positioned and targets defined, Altair approaches its most critical phase. The company plans RAB and diamond drilling at both SOKO and North Peters, with initial focus on the W1 and W3 geochemical anomalies.

Drilling Strategy:

1. RAB drilling to test geochemical models and validate anomaly sources
2. Diamond drilling to intersect and define any identified mineralisation
3. Systematic approach testing both in-situ and transported material theories

The geological team has developed two possible target models to explain the prominent geochemical responses:

• In-situ mineralisation: Bodies directly below target areas
• Transported signature: Erosion from higher elevation deposits

Both models will be thoroughly tested, providing comprehensive understanding of the system.

Why Investors Should Follow Altair Minerals

The Altair Minerals gold discovery has positioned the company as a major exploration play in one of the world's most prospective yet underexplored gold regions. The company's systematic approach to defining drill targets through integrated geochemistry and geophysics, combined with its strategic landholding within the proven Oko Shear corridor, creates exceptional discovery potential.

Key Tracking Reasons:

• World-class address: Guyana Shield extension of prolific West African geology
• Scale advantage: 590km² contiguous landholding in proven corridor
• Technical excellence: Multi-disciplinary target validation
• Operational efficiency: Demonstrated execution capability
• Near-term catalysts: April drilling programme across multiple targets

"Altair has successfully defined two major geochemical targets spanning 4km of strike length along the strategic Oko Shear Contact. With drilling scheduled to commence in April 2026 and infrastructure positioned for sustained exploration, the company offers investors exposure to potentially transformational discoveries in one of the world's most prospective gold regions. The combination of technical validation, strategic location, and operational excellence makes ALR a compelling exploration story to follow closely."

The convergence of geological validation, operational readiness, and strategic positioning creates a unique opportunity for investors seeking exposure to high-impact gold exploration in a proven jurisdiction. With drilling imminent and multiple targets defined, the Altair Minerals gold discovery represents a carefully calculated bet on geological success in Guyana's emerging gold province.

Could Altair's Gold Discovery Reshape Your Portfolio?

With drill rigs positioned and two major geochemical targets spanning 4km of strike length along the proven Oko Shear Contact, Altair Minerals stands at the threshold of potentially transformational discoveries. The company's systematic approach has validated exceptional gold signatures through challenging duricrust geology, whilst establishing world-class infrastructure across 590km² of contiguous landholding in Guyana's emerging gold province. As April drilling programmes commence across multiple high-priority targets, investors seeking exposure to carefully calculated exploration success in a proven jurisdiction should explore the full scope of Altair's strategic positioning and operational capabilities at altairminerals.com.au.