Riversgold Hits 11.78 g/t Gold in Northern Zone Drilling Expansion
Riversgold Limited has reported promising assay results from its latest drilling campaign at the Northern Zone of the Kalgoorlie Gold Project, revealing significant gold mineralisation and expanding the known deposit footprint.
- First six holes of October 2025 grade control drilling show significant gold intercepts
- New high-grade gold zone delineated on eastern margin, expanding northwards
- Ongoing November 2025 drilling program with 12 holes completed out of 40
- Results support upcoming maiden Mineral Resource Estimate and 2026 mining plans
- Northern Zone hosted within porphyry unit along Canon Shear fault zone
Expanding the Gold Footprint
Riversgold Limited (ASX, RGL) has released assay results from the initial six drill holes of its October 2025 grade control program at the Northern Zone, part of its broader Kalgoorlie Gold Project in Western Australia. These results confirm significant gold mineralisation and an expanding footprint, particularly on the eastern margin of the project area. The Northern Zone lies just 25 kilometres east of the famed Kalgoorlie Super Pit, positioning it strategically within a prolific gold region.
Notable Assay Highlights
The standout intercepts include 9 metres at 1.33 grams per tonne (g/t) gold from 56 metres depth, 3 metres at 4.39 g/t from 45 metres, and a high-grade 1 metre interval at 11.78 g/t within that 3-metre intercept. These results reinforce the presence of a high-grade gold zone hosted within a larger, lower-grade porphyry system. The drilling to date has been vertical, which aligns well with the horizontal orientation of the mineralisation, allowing for true width sampling.
Ongoing Drilling and Future Plans
Riversgold is currently 12 holes into a 40-hole drilling campaign initiated in November 2025, with further assay results expected over the next six to eight weeks. The company intends to use the expanding dataset to complete a maiden Mineral Resource Estimate (MRE) for the Northern Zone. This MRE will be a critical milestone, underpinning mining plans developed in partnership with Mega Resources, targeting production commencement in the first half of 2026.
Geological Context and Technical Approach
The Northern Zone mineralisation is hosted within a Tonalite-Trondhjemite Intrusion (TTI) porphyry unit, situated along the Canon Shear fault zone. The deposit exhibits high background gold levels with horizontal mineralised units, a geological setting that has guided the drilling orientation and sampling strategy. The absence of water to depths of 60 metres has facilitated effective grade control drilling using an Atlas Copco rig with a face sampling hammer.
Strategic Implications
Chairman David Lenigas highlighted that the drilling results are exceeding expectations and are integral to expanding the oxide zone footprint. The collaboration with Mega Resources is set to leverage these findings for mine planning, with the goal of scaling up operations in 2026. Riversgold’s methodical approach to exploration and resource definition positions it well to capitalise on the Kalgoorlie region’s rich gold endowment.
Bottom Line?
With drilling advancing and assays pending, Riversgold’s Kalgoorlie project is poised for a critical resource update that could shape its near-term mining trajectory.
Questions in the middle?
- How will the pending assay results from the remaining drill holes influence the overall resource estimate?
- What are the specific timelines and milestones for the maiden Mineral Resource Estimate and subsequent mining approvals?
- How will the partnership with Mega Resources evolve as the project moves towards production?