Untested Great Western Corridor Could Transform Gateway’s Yandal Prospects
Gateway Mining reports exceptional high-grade gold lag samples up to 24.4g/t Au and a 3.5km soil anomalism trend at the previously unexplored Great Western splay structure within its Yandal Gold Project, signaling a potentially larger gold system than nearby Horse Well.
- High-grade lag samples including 24.4g/t Au at Great Western
- 3.5-kilometre-long primary mineralised shear structure mapped
- First-ever sampling along Great Western splay corridor with mineralisation open in multiple directions
- Potentially larger and more complex gold system than Horse Well camp
- Follow-up soil sampling and maiden drilling planned for late 2025
Exploration Breakthrough at Great Western
Gateway Mining Limited (ASX – GML) has revealed compelling new exploration results from its 100%-owned Yandal Gold Project in Western Australia. The company’s recent surface geochemical sampling at the Great Western splay structure has returned high-grade gold lag samples, with a standout peak of 24.4 grams per tonne (g/t) gold. This discovery marks the first systematic exploration of this corridor, which now shows a coherent 3.5-kilometre-long mineralised trend adjacent to the Great Western intrusion.
Significance of the Great Western Splay Structure
Executive Chairman Andrew Bray emphasised the importance of these findings, noting that the Great Western splay corridor is mineralised and holds potential for high-grade gold mineralisation. The mineralisation appears to be associated with the mafic-intermediate contact zone, a geological feature known to host high-grade deposits at nearby prospects such as Horse Well and Mustang. The delineation of this extensive gold trend suggests a substantial exploration target that has remained untested by previous drilling, which was conducted too far east of the main structural corridor.
Comparison with Horse Well Gold Camp
The lag sample anomalism at Great Western compares favourably with the Horse Well gold camp, where similar surface anomalies corresponded with shallow, high-grade drill intersections. For example, the Warmblood deposit at Horse Well has historic drill intercepts including 28 metres at 2.1 g/t Au from 12 metres depth and 9 metres at 4.9 g/t Au from 46 metres. Gateway’s results suggest that Great Western could represent a larger and more geologically complex system, potentially offering a more compelling exploration opportunity.
Ongoing and Planned Exploration Activities
Following the initial success, Gateway has completed a second soil sampling program to the north and east of the anomalous zone, with results pending. A third program is underway to extend sampling southeast towards Horse Well. Concurrently, geophysical surveys including induced polarization and gravity have been conducted or are in progress to refine structural models and target zones for drilling.
Gateway remains well funded with approximately $12.1 million in cash and liquid ASX-listed securities, positioning the company to advance its 2025 and 2026 exploration plans. A maiden drill program targeting the Great Western splay structure is anticipated, with details to be announced in due course.
Strategic Implications
The discovery of high-grade gold surface anomalies over a significant strike length at Great Western reinforces Gateway Mining’s strategic focus on the Yandal Gold Project. The identification of a major mineralised shear structure, previously unexplored, opens a new frontier within a prolific gold region. The potential for near-surface mineralisation and the geological complexity of the system could translate into a valuable resource addition pending successful drilling results.
Bottom Line?
Gateway Mining’s Great Western discovery sets the stage for a pivotal exploration phase that could redefine the scale of its Yandal Gold Project.
Questions in the middle?
- Will upcoming drilling confirm the continuity and true width of the high-grade mineralisation at Great Western?
- How will the pending soil sampling results to the north and east influence the exploration model and targeting?
- What are the implications of the geophysical survey data for identifying deeper or concealed mineralised zones?
