Riversgold Ltd (ASX:RGL, OTC:RVSGF) has provided an update on exploration and development activities during the June 2025 quarter across its Kalgoorlie East, Saint John, and Wodgina East projects.
Kalgoorlie East: Resource modelling and high-grade gold hits
At the Kalgoorlie East–Northern Zone Gold Project, a Program of Works was approved for an additional 200 drill holes aimed at expanding high-grade mineralisation within a 600-metre-wide porphyry system. Structural logging of four diamond holes to 500 metres' depth was completed by Xirlatem to support a maiden Mineral Resource Estimate (MRE), with further drone magnetic survey data and metallurgical testwork feeding into the geological model. The latter delivered an average gold recovery of 92.56% from five oxide samples.
Northern Zone Project Map showing proximity to the Kalgoorlie "Super Pit".
Recent reverse circulation (RC) drilling yielded several shallow gold intercepts including:
- 7 metres at 3.62 g/t from 39 metres (NZRC007)
- 5 metres at 4.37 g/t from 37 metres (NZRC008)
- 6 metres at 6.12 g/t from 35 metres (NZRC012)
Aircore (AC) drilling also delivered high-grade results:
- 10 metres at 8.89 g/t from 46 metres (NZAC127)
- 7 metres at 3.14 g/t from 47 metres (NZAC124)
Best 2025 RC and AC drill collar plan with gold grade contours from all drilling results to date.
The mining lease application process is progressing, alongside a Miscellaneous Licence to facilitate ore transport to nearby processing facilities.
Saint John Project: Strong polymetallic surface results
At the Saint John copper-gold-silver-antimony project in New Brunswick, Canada, Riversgold reported multiple high-grade rock-chip assay results, including:
- 41.6 g/t gold and 26.8 g/t silver (RGLSJ24_083)
- 8.99% copper and 42.6 g/t silver (RGLSJ24_076)
- 240 g/t silver (RGLSJ24_081)
Saint John Project location, illustrating the prospect locations, figure extents and RGL rock chip sample locations.
A sample from the Prince of Wales Prospect returned 10.15% copper and 65.8 g/t silver, with accompanying high IP/chargeability values (210–220 mSec) and low resistivity. Broader drone MobileMT and ground IP surveys are underway to refine drill targets, supported by a fully approved 2,000-metre drilling program.
Prince Of Wales prospect sample RK008302 10.15% Cu and 65.8g/t Ag, being tested for Induced Polarisation, chargeability, galvanic resistivity and inductive conductivity.
Wodgina East: Strategic lithium and iron ore potential
At the Wodgina East Project in the Pilbara, a site visit confirmed expenditure obligations are current. The tenement borders Mineral Resources' Wodgina Lithium Mine and lies just 114 kilometres from Port Hedland's Utah Point terminal. Historical rock chip sampling from Mesa 2 returned iron grades between 51.94% and 56.67%, highlighting iron ore potential alongside lithium prospectivity.