Gateway Mining has identified the Rubicon prospect within its Yandal Gold Project, revealing significant gold mineralisation over a 700-metre strike. Early drilling results suggest potential for multiple high-grade lodes, with further assays pending.
- Discovery of Rubicon prospect east of Haflinger along Mustang Trend
- Significant gold intercepts including 12m @ 1.0g/t Au and 16m @ 1.0g/t Au
- Mineralisation extends over 700m strike and remains open to the south
- Deep weathering profile leaves fresh rock mineralisation untested
- Gateway well funded with $19.4m cash and $9.3m in liquid ASX securities
New Prospect Emerges in Yandal Gold Project
Gateway Mining Limited (ASX:GML) has announced the discovery of a new gold prospect named Rubicon within its 100%-owned Yandal Gold Project in Western Australia. Situated on a parallel structure to the east of the previously identified Haflinger prospect, Rubicon adds a third significant target area within the Celia-Mustang trend, a region already showing promising signs of a burgeoning gold camp.
Encouraging Early Drilling Results
Initial aircore drilling at Rubicon has delineated gold mineralisation over approximately 700 metres of strike length. Notable intercepts include 12 metres at 1.0 grams per tonne (g/t) gold, including 4 metres at 2.6 g/t, and 16 metres at 1.0 g/t gold with a higher-grade 4-metre section at 2.3 g/t. These results are significant given the early stage of exploration and the wide spacing of drill holes, suggesting robust potential for further discoveries.
Structural Setting and Geological Potential
Rubicon lies on a rotational flexure within the Mustang Shear Zone, a structural setting analogous to that which controls mineralisation at Haflinger. This flexure likely enhances dilation, facilitating hydrothermal fluid flow and gold deposition. The shear zone at Rubicon is notably wide; up to 200 metres in places; and is expected to host multiple stacked higher-grade lodes, mirroring the mineralisation style observed at Haflinger.
Untapped Depth Potential and Pending Assays
The prospect remains open to the south, where recent drilling has intersected more intense shearing and alteration, with assay results awaited. Additionally, the deep weathering profile at Rubicon means that most aircore holes have ended in saprolite without reaching fresh rock. This leaves substantial untested potential at depth, which will be a focus for upcoming reverse circulation (RC) drilling campaigns.
Strategic Exploration and Financial Position
Gateway’s current drilling efforts are prioritised at the Great Western target, but plans are underway to return to Rubicon, Haflinger, and Hummer for follow-up drilling. The company remains well capitalised, holding $19.4 million in cash and $9.3 million in liquid ASX securities as of the December 2025 quarter, positioning it strongly to advance its 2026 exploration program.
With multiple gold mineralised trends emerging across the Celia-Mustang area, Gateway Mining is steadily building a compelling narrative of resource growth potential within the Yandal Gold Project.
Bottom Line?
Rubicon’s discovery reinforces Gateway’s growing footprint in Yandal, but the real prize lies in the untested depths and pending assay results.
Questions in the middle?
- How will upcoming RC drilling at Rubicon refine the understanding of mineralisation depth and grade?
- What impact will pending assay results from southern drill holes have on the overall resource potential?
- Can Gateway replicate Haflinger’s stacked lode success at Rubicon to significantly expand its resource base?