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Cosmos Exploration Limited (ASX:C1X) has announced promising assay results from its maiden prospecting program at the Fenix Project, located in the emerging uranium district of the Thelon Basin, Nunavut, Canada. The company’s rock sampling initiative has revealed high-grade mineralization, underscoring the potential for significant uranium and base metal deposits in the region.
The maiden rock sampling program at Fenix returned impressive results from 27 rock chip samples, showcasing substantial mineralization. Among the highlights were samples containing up to 0.89% uranium (U₃O₈), 4.59% copper (Cu), 332 grams per tonne (g/t) silver (Ag), 897 parts per million (ppm) cobalt (Co), and 558 ppm lead (Pb). Four key prospects returned uranium grades exceeding 500 ppm U₃O₈, indicating that further exploration and follow-up work are warranted.
One of the standout results came from the RAD1 prospect, where uranium, copper, and silver mineralization were observed over a 250-metre strike length. Furthermore, the potential strike length may extend as far as 3.6 kilometers, following the discovery of additional uranium mineralization at the newly identified RAD8 prospect. This significant find emphasizes the possibility of a large-scale uranium-copper-silver system in the area.
The rock chip sampling program not only confirmed previously identified radiometric anomalies but also uncovered several new areas that will undergo further exploration. The Amer Group of rock types, known for their mineralogy, alteration, and veining characteristics, appear to be a significant host for uranium deposits. Cosmos Exploration believes these results point to potential basement-hosted uranium deposits similar to the Horseshoe Raven deposit located in the Athabasca Basin, a prolific uranium mining region.
The recent assay results from the Fenix Project have bolstered confidence in the project's potential, particularly at RAD1. Several in-situ boulders and outcrops of uranium mineralization have been identified, with some traced across a 250-metre surface area. Previous historical drilling in this area intersected a 3.9-metre interval of uranium mineralization, including 0.68% U₃O₈ over a 0.4-metre section. However, many drill holes in this area were positioned north of the contact horizon between the quartzite and siltstone, missing the target mineralization zone. These new surface assay results suggest that further drilling could delineate substantial uranium, copper, and silver mineralization along the 250-metre strike, which remains open for expansion.
Magnetic data interpretations lend further credibility to the hypothesis that these uranium occurrences are linked along the prospective contact between the quartzite and siltstone formations. Evidence of a uranium-bearing quartzite boulder at the RAD8 prospect, located 3.6 kilometers east of RAD1, supports the theory of an extended mineralized strike.
At both RAD1 and RAD8, the rock types are characterized by hematite-silica-altered arkosic quartzite, with notable drusy quartz veining. The similarities to the Horseshoe Raven deposit, which also contains chalcopyrite and galena sulphide minerals, strengthen the case for future exploration efforts. This geochemical feature has been noted in Fenix’s rocks, providing a model for additional exploration along the 3.6-kilometer trend between RAD1 and RAD8.
Cosmos Exploration plans further work along this high-priority trend, including additional prospecting, shallow diamond drilling, and a trial induced polarization (IP) survey. The survey will aim to detect high concentrations of copper and lead sulphide minerals at surface and depth, which are likely associated with uranium mineralization.
In addition to the RAD1 and RAD8 prospects, the 77-4 and RAD5 prospects have also returned promising results. Hematite-altered sandstones, associated with copper and lead mineralization, indicate further potential. Cosmos plans more detailed prospecting and sampling in these areas to confirm their mineral potential.
