GEO Exploration Expands Gorge Project Gold Targets to 12 After Airborne Geophysical Survey in Western Australia

Wyloo Dome Confirmation Enhances Geological Understanding of Western Australian Gorge Project

Interpretation of regional gravity, magnetic, radiometric, and airborne electromagnetic data has confirmed that the Gorge Project is centred on the Wyloo Dome, a regionally significant northeast-southwest trending domal geological structure. This confirmation marks a major advancement in GEO’s understanding of the project’s prospectivity and structural framework. Domal structures are highly prospective exploration targets, and the Wyloo Dome lies at the heart of GEO’s 81-square-kilometre licence area within the Capricorn Orogen, approximately 110 kilometres west of Paraburdoo, Western Australia.

The Wyloo Dome shares geological features with Australia’s largest gold deposits. Folding, faulting, and structural complexity around domal features create favourable pathways and deposition sites for gold-bearing fluids migrating through the crust. The dome is situated along a major northeast-southwest structural corridor disrupting regional geological trends, potentially serving as conduits for mineralising fluids. Additionally, the Wyloo Dome overlies a large gravity anomaly that may indicate mafic intrusives or dyke swarms at depth. These factors collectively reinforce GEO’s geological model and exploration strategy for the project.

Exploration Target Inventory Grows from Three to Twelve Areas

GEO’s integrated data interpretation has identified nine new exploration targets in addition to the three previously ranked one prospects at the Gorge Project, expanding the target inventory to twelve. This growth provides greater flexibility for systematic follow-up and reduces reliance on any single prospect. The existing rank-one targets—Gorge Mine Prospect, 401 Prospect, and MAG001—have been further upgraded based on the latest data. The nine new targets include RAD002, Central Dome, Central Zone, Liverpool, Tadpole, Gossan Valley, Gorge West, N Star, and Quartz Valley, ranked by prospectivity using available geological and geophysical information.

Target generation incorporated geophysical and geochemical responses, structural complexity, quartz veining, and historic workings. The expanded inventory reflects a refined understanding of the Gorge Project as a broader geological system with multiple favourable mineralised settings rather than isolated historic gold occurrences. Rankings will evolve as field observations, assays, and further geochemical data are integrated into GEO’s developing geological model, enabling dynamic prioritisation of exploration efforts.

MAG001 Target Exhibits Characteristics of Major Mineral Systems

The MAG001 target remains a top-ranked priority following enhanced interpretation. It features a strike-limited positive magnetic anomaly of approximately 400 nanoteslas amplitude located in the licence’s northwest. Three-dimensional inversion modelling suggests the magnetic body’s top lies around 300 metres below surface with significant vertical extent, indicating a potentially substantial mineralised body rather than shallow surficial material. This target represents a greenfield opportunity with no prior exploration within a defined geological structure.

MAG001’s combined magnetic, radiometric, structural, and surface signatures align with intrusion-related gold and iron oxide copper-gold mineral systems. It lies near the RAD001 radiometric anomaly, with watershed and drainage analysis indicating the radiometric response is likely proximal to its source. The target is associated with a LiDAR-defined topographic feature, extensive quartz veining, and iron-oxide staining visible in aerial imagery. Situated along a major northeast-southwest structure and near structural intersections, MAG001 is one of GEO’s highest-priority targets for future investigation and drilling.

LiDAR and Aerial Imagery Reveal Extensive Historic Mining Activity and Quartz Veining

Analysis of LiDAR and aerial photography has significantly enhanced GEO’s ability to map historic mine workings, geological structures, and surface mineralisation indicators. Twenty-four shafts and twelve trenches were identified across the Gorge Project licence, far exceeding previously recorded historical data and indicating more extensive past prospecting and mining. Several shafts align directly with quartz veins visible in aerial images, suggesting historic miners targeted specific bedrock structures rather than only shallow or transported gold.

Extensive quartz veining has been interpreted throughout the project area, with significant vein density in both concordant and discordant orientations. Quartz veins are key indicators for gold mineralisation and essential for local target generation and drill planning. The LiDAR and aerial data also identified numerous outcrops, enabling interpretation of bedding and cleavage orientations critical for structural modelling. This analysis has improved understanding of drainage patterns and regolith distribution, revealing a major watershed and associated regolith changes centrally within the project, which influence geochemical and radiometric data interpretation and assist in vectoring toward primary gold sources.

Field Reconnaissance in May–June 2026 Validates Priority Prospect Areas

Field reconnaissance conducted in May and June 2026 confirmed priority zones at the Gorge Mine, 401, and Central Zone prospects. Activities included geological and structural mapping, verification of historic workings and drill sites, and collection of 35 rock-chip and 246 orientation soil samples. Visible gold was identified in quartz veins, alongside significant veining and alteration. Copper-rich gossan was also observed at the Central Zone, further evidencing mineralisation within the licence.

Historical exploration at the Gorge Project has identified gold occurrences along roughly five kilometres of strike. Rock-chip assays reached up to 134 grams per tonne gold, soil samples up to 233 grams per tonne, and drilling intercepted 1 metre at 35 grams per tonne gold. Recovery of near-surface gold nuggets ranging from under 2 grams to over 100 grams suggests potential primary bedrock gold sources. GEO initiated a systematic modern exploration programme in 2026, employing high-resolution LiDAR, aerial photography, magnetic, and radiometric surveys to better define the gold trend. The company is integrating geophysical, geological, and geochemical data to refine targets for follow-up sampling and planned maiden drilling.

Magnetic and Radiometric Data Reveal Complex Fault and Fold Structures

High-resolution airborne magnetic and radiometric surveys across the entire licence have provided detailed insights into the project’s geological framework. Magnetic data interpretation identified a network of faults and shear zones, including several with significant strike lengths. Longer, continuous faults may extend deeper and serve as major fluid pathways for mineralisation. Worming of magnetic and radiometric data enabled detailed mapping of local geological and fault structures beyond prior capabilities.

Interpretation reveals secondary northeast-southwest fold structures within the Wyloo Dome and several enclosed magnetic anomalies potentially representing previously unrecognised intrusive bodies. Numerous faults crosscut these folds and intrusions, with intersections considered highly prospective for mineralising fluid pathways and deposition. The data also uncovered previously unrecognised geological units, indicating the fold and fault architecture is more complex than historical mapping suggested. This interpretation advances GEO’s understanding from isolated historic gold occurrences to a broader mineralised geological system.

Multi-Phase Geological History and Structural Controls Enhance Mineralisation Potential

Geological interpretation shows the Gorge Project is underlain by three Proterozoic sedimentary rock groups with distinct mineralisation potential. The oldest, centrally located Wyloo Group of the Ashburton Formation is considered most prospective for gold and polymetallic mineralisation. It is flanked northwest and southeast by the younger Capricorn Group, both folded along northeast-southwest trends, with the Wyloo Group exposed within the Wyloo Dome. A third unit from the Bangemall Basin lies south and above the older groups, deformed along northwest-southeast trends that overprint earlier structures.

Mafic dykes were emplaced exploiting pre-existing structures, creating a complex fold and fault architecture important for mineralisation potential. Fault and quartz-vein patterns indicate prospectivity in structurally deformed sedimentary terrains. Mapping shows strong northwest-southeast cleavage, faults, and quartz veins within the Wyloo Group, with a secondary northeast-southwest fault system influencing the Wyloo Dome’s architecture. Areas where these structural trends intersect are considered higher priority targets due to enhanced pathways and favourable mineralisation sites.

Gorge Mine and 401 Prospects Upgraded Through Integrated Data Analysis

The Gorge Mine Prospect remains a rank-one priority based on historic workings, shafts, and elevated rock-chip and stream-sediment geochemistry. It has been upgraded following identification of additional vertical shafts and increased quartz veining density from LiDAR and aerial data. Located along a major west-northwest to east-southeast structural zone intersected by northeast-southwest structures, the area exhibits increased structural complexity consistent with an orogenic gold system. The interpretation suggests historic activity at Gorge Mine is part of a broader structurally controlled mineralised zone rather than an isolated occurrence.

The 401 Prospect also remains a rank-one priority, supported by historic workings, prior drilling, and elevated geochemical results. It was upgraded by identifying its position along a significant northwest-southeast magnetic gradient, with nearby magnetic closures and quartz eye porphyry outcrops indicating possible intrusive bodies. The combination of historic mineralisation, geochemistry, structural complexity, and potential intrusive association makes 401 prospective for both orogenic and intrusion-related gold mineralisation, offering multiple geological models for future exploration.

Upcoming Exploration and Maiden Drilling Plans Pending Approvals

GEO plans to further test identified targets through extensive soil and rock-chip geochemistry surveys, geological mapping, and controlled sampling of mullock heaps from historic workings. These activities will aid target ranking and refinement in preparation for the proposed maiden drilling programme. The company is integrating geophysical, geological, and geochemical data to develop systematic drilling plans focused on priority targets. Additional assay results from the field programme will be incorporated into the evolving geological model to refine exploration priorities.

Drilling remains subject to heritage and government permitting. GEO must secure all necessary approvals before commencing drilling operations. Tom Harris, GEO’s Exploration Manager, highlighted that the interpretation has confirmed and generated multiple high-priority targets warranting further investigation and drilling. He expressed enthusiasm over LiDAR data revealing significantly more historic vertical shafts than expected. Dr Finbarr Murphy, GEO’s Technical Consultant, stated that the regional and local geological setting aligns with globally significant mineral systems and that the quality of airborne geophysical surveys has enabled a confident structural and lithological interpretation.

Technical Expertise and Proven Discovery Success Underpin Interpretation

Dr Finbarr Murphy of Fractore Pty Ltd collaborated closely with GEO’s technical team on processing, interpretation, and target generation using geophysical datasets. His expertise contributed to Predictive Discovery Limited’s discovery of the Bankan Gold Project in Guinea, West Africa, now defined with a 5.4 million ounce gold resource. This successful track record lends credibility to the technical interpretation at the Gorge Project. Advanced processing techniques, including image enhancement and multiscale edge-detection worming, were applied to LiDAR, aerial photography, magnetic, and radiometric data, highlighting geological boundaries, intrusive bodies, and major structures not visible at surface, enabling identification of overlooked targets.

Omar Ahmad, CEO of GEO Exploration, expressed excitement about the results and growing confidence in the Gorge Project’s potential. He noted the addition of nine new targets alongside upgrades to the three rank-one prospects and highlighted the significance of identifying the Wyloo Dome, a geological setting linked to major Australian gold deposits including Telfer and Fosterville. Ahmad acknowledged the contributions of Dr Finbarr Murphy, Callum Baxter, and Tom Harris, emphasizing their combined expertise as the company advances the next exploration phase.