White Cliff Minerals Unveils Major Copper Targets at Rae Project

Survey Breakthrough at Rae Copper Project

White Cliff Minerals Limited (ASX, WCN) has announced the completion and independent processing of its 2025 airborne electromagnetic (EM) survey at the Rae Copper Project in Nunavut, Canada. The survey, which integrates electromagnetic, magnetic, and gravity data, has identified multiple high-tenor copper anomalies along the 10-kilometre Teshierpi Fault Zone, significantly expanding the known mineralisation footprint beyond the established Danvers deposit.

The airborne survey results, delayed due to mid-season completion and extensive data processing, have revealed a series of stacked copper targets, many of which remain untested. Notably, only two anomalies have been drilled to date, including the Danvers deposit itself and a single hole (DAN25019) that returned an impressive 15 metres grading 4.8% copper and 20 grams per tonne silver from just 12 metres depth.

Geophysical Insights and Mineralisation Signatures

The new geophysical matrix developed by White Cliff Minerals combines electromagnetic, magnetic, and gravity survey data, all cross-validated against surface mapping, rock chip sampling, and confirmatory drilling results. This integrated approach has allowed the company to confidently identify the electrical signature associated with basalt-hosted vein mineralisation, a hallmark of the Danvers-style copper-silver system.

Several of the newly identified geophysical targets exhibit footprints up to 1,500 metres in length; approximately three times larger than the known Danvers mineralisation; suggesting the potential for a materially larger mineralised system than previously recognized. Grab samples collected between drillhole DAN25019 and Danvers have returned exceptionally high-grade copper and silver assays, including 37.4% copper and 72.9 g/t silver, reinforcing the prospectivity of these untested zones.

Strategic Implications and Next Steps

Managing Director Troy Whittaker highlighted the transformative impact of the survey on the company’s understanding of mineralisation controls at Rae. He emphasized the presence of multiple high-quality, drill-ready targets exhibiting coincident EM, magnetic, and gravity anomalies; signatures consistent with the Danvers deposit but on a larger scale.

With assay results from the 2025 drilling campaign still arriving, White Cliff Minerals is poised to commence a focused drilling program in early 2026. This program aims to test the newly defined targets and further delineate the extent of the mineralised system. The company’s confidence is bolstered by historic resource estimates at Danvers, although these are not yet compliant with modern JORC standards and will require verification through ongoing exploration.

Environmental and Regulatory Context

The Rae Copper Project benefits from secured mineral tenure, including a 100% owned mineral lease with a manageable net smelter royalty arrangement. White Cliff Minerals holds the necessary water licenses and land use permits, and has obtained permissions from the Kitikmeot Inuit Association, positioning the project well for continued exploration activities in this remote Arctic environment.

Environmental considerations, particularly related to permafrost and waste management, are acknowledged as part of the project’s development planning, with historic metallurgical testwork indicating favorable processing characteristics for the copper-silver mineralisation.