Redcastle Resources completes a 13,539m grade control drilling program at Redcastle Reef, delivering exceptional high-grade gold intercepts and identifying a 300m western extension. Sixteen new gold targets emerge across the underexplored TBone Belt as mine readiness progresses toward mid-2026 production.
- Completed 327-hole, 13,539m grade control drilling at Redcastle Reef
- Exceptional high-grade gold intercepts support updated resource modelling
- Broad spaced drilling reveals 300m western extension beyond current resource
- Sixteen new gold targets identified across underexplored TBone Belt
- Mine approvals advanced with 20-year haul road licence granted
Exceptional Grade Control Drilling Confirms High-Grade Gold Continuity
Redcastle Resources (ASX:RC1) has completed an extensive grade control (GC) drilling program at its flagship Redcastle Reef (RR) deposit, delivering a substantial dataset of 327 reverse circulation holes totaling 13,539 metres. The drilling, conducted under the RB Joint Venture with BML Ventures, exceeded its initial target and returned consistently high-grade gold intercepts that reinforce the deposit's robust geological model. Highlights include a staggering 4 metres at 100.5 g/t Au from 50m, with a standout 1 metre intercept grading 397 g/t Au, indicative of the nuggety gold nature characteristic of the system.
This comprehensive GC program has materially improved the understanding of grade distribution and lode geometry, with 23 holes returning grades above 20 g/t Au. The shallow, near-surface mineralisation offers operational flexibility for early mining stages with a limited strip ratio. The Company is now integrating these results into updated geological models to support refined mine planning and pit design ahead of an anticipated mid-2026 mining start.
Broad Spaced Drilling Uncovers Western Extension to Redcastle Reef
Complementing the GC program, a broad spaced shallow RC (SHRC) drilling campaign between Redcastle Reef and the Queen Alexandra (QA) deposit has identified a compelling ~300-metre western extension to the RR mineralised system, beyond the current Mineral Resource Estimate (MRE) footprint. This extension aligns with historical workings and geological trends, particularly near the Rixon's Shaft area, suggesting a coherent mineralised corridor open to further expansion.
The SHRC drilling also confirmed the feasibility of planned low-grade waste dump locations, a key operational milestone supporting ongoing mine-readiness planning. Follow-up drilling is planned to test the continuity and scale of this western extension, potentially adding significant value to the resource base. These findings build on earlier indications of resource growth potential, as detailed in the company's recent high-grade gold intercepts and final assays of Redcastle Reef GC announcements.
Emerging Targets Across the TBone Belt and Morgan’s Castle East
Beyond the RR and QA deposits, Redcastle has identified sixteen potential walk-up gold targets across the underexplored TBone Belt through a comprehensive review of historical geochemical datasets and recent fieldwork. This area, covering approximately 87 km², remains only partially sampled by modern techniques, presenting significant discovery upside. Targets are structurally controlled and supported by high-grade surface geochemistry, old workings, and favourable regional trends.
Meanwhile, drilling at Morgan's Castle East (MCE) has confirmed a broad, low-grade gold mineralised system with isolated higher-grade zones. Although drill spacing currently limits interpretation of continuity and thickness, preliminary geological models suggest a deposit geometry similar to QA, with mineralisation open to the east and at depth. Subsequent assays from composite intervals have returned encouraging results, including 1 metre at 15.1 g/t Au, further underpinning the corridor-scale potential of this emerging gold system. These developments echo earlier findings from the broad gold system at Morgan’s Castle East.
Advancing Mine Readiness and Regulatory Approvals
On the regulatory front, Redcastle continues to make strides with positive engagement from the Western Australian Department of Mines, Petroleum and Exploration (DMPE) regarding the Mine Development and Closure Proposal (MDCP) for the QA and RR deposits. A significant milestone was achieved post-quarter with the granting of a 20-year Miscellaneous Licence (L39/387) covering the proposed ore haulage route, streamlining logistics planning for future mining operations.
Diamond drilling programs at RR and QA have been completed, with assay results pending, while infill RC drilling at QA progresses to support near-term mine planning. The integration of the full RR grade control dataset is underway to refine pit design and scheduling, with mining activities targeted to commence mid-2026 and first cash flow expected in the second half of the year.
Exploration expenditure for the quarter was $288,000, primarily directed towards drilling and assay costs. No substantive mining production activities were reported during this period. The company maintains a cash balance of $847,000 at quarter-end, with an estimated 1.8 quarters of funding available based on current expenditure levels.
Strategic Implications and Next Steps
Redcastle's latest drilling results and exploration advances solidify its position within the Leonora-Laverton greenstone belt as a promising developer of near-surface, high-grade gold deposits. The expanded resource footprint at Redcastle Reef, combined with the emerging corridor of mineralisation linking QA, RR, and MCE, offers a platform for staged, capital-disciplined mining development. The identification of multiple walk-up targets across the TBone Belt adds a pipeline of exploration prospects that could underpin longer-term growth.
Upcoming catalysts include the release of updated Mineral Resource Estimates incorporating the new GC drilling data, assay results from diamond drilling programs, and further exploration outcomes from the TBone Belt. Regulatory approvals and operational readiness will continue to shape the path to production, with the RB JV's decisions critical to advancing mining activities.
Bottom Line?
Redcastle’s high-grade drilling success and resource expansion set the stage for mid-2026 mining, but assay results from diamond drilling and regulatory approvals remain key uncertainties.
Questions in the middle?
- How will the updated Mineral Resource Estimate affect Redcastle Reef’s economic potential?
- What impact will the pending diamond drilling assay results at RR and QA have on mine planning?
- Can follow-up drilling confirm the continuity and scale of the 300m western extension beyond current resources?