Arkle Resources, an Irish-listed exploration company, said it had mobilised a rig for a fully financed second programme of approximately 1,700 metres of reverse-circulation drilling at the Onyofi uranium prospect in Namibia’s Erongo region. The campaign is expected to take about three weeks and will investigate the depth and lateral extent of mineralisation identified in earlier drilling. It is an exploration programme, not the start of mine development.
The first programme encountered uranium mineralisation in eight of nine holes across an area approximately 1.4 kilometres long and 600 metres wide, Arkle said. Those results indicate a mineralised system but do not establish a mineral resource or reserve, or the economics of mining and processing uranium. The company has set a maiden mineral-resource estimate for 2027 as a target, subject to further results and technical assessment.
The main technical question is whether the previously observed uranium zones are sufficiently continuous and substantial to justify more comprehensive resource drilling. The new work will add geological information for Arkle and its investors, but commercial significance depends on further drilling, a compliant resource estimate and subsequent economic studies, rather than simply the number of holes with uranium indications.
Regional setting and other assets
Namibia is an established uranium-producing country, with geological expertise and service infrastructure that can assist exploration. Its uranium sector is linked to global nuclear fuel markets, making new exploration potentially relevant to investors in listed energy-minerals companies. However, access to infrastructure does not resolve questions about grade, continuity, recovery performance or permitting at Onyofi.
Arkle’s portfolio also includes an interest in Ireland’s Stonepark zinc-lead project, where the reported inferred resource is approximately 5.1 million tonnes at 11.3% combined zinc and lead. The holding provides exposure to a European base-metals asset, but is separate from the Namibia programme and is not evidence of funding or technical results for Onyofi.
Work needed before the project advances
Sampling quality, radiometric validation and assay confirmation will be important, followed by processing studies, before Onyofi can advance beyond exploration. The second programme is intended to test the extent of the mineralisation; the resource target remains conditional on additional results and technical assessment.
