CanAlaska Expands West McArthur Pike Zone Footprint To 500 Metres Strike Length
Press Release
Pike Zone Mineralized Corridor Remains Open; Strengthening Target Vectors to West
$15 Million 2026 Exploration Program Approved for West McArthur JV
Saskatoon, SK, Canada, November 6, 2025 – CanAlaska Uranium Ltd. (TSX-V: CVV;
OTCQX: CVVUF; Frankfurt: DH7) (“CanAlaska” or the “Company”) is pleased to report that it has completed the summer drill program on the West McArthur Joint Venture project (the “Project”) in the eastern Athabasca Basin (Figure 1). The summer program was focused on continued step outs from the Pike Zone high-grade mineralization to evaluate for additional zones of uranium mineralization and continuation of the associated large hydrothermal alteration system. During the program, the Company successfully stepped out 250 metres west and 100 metres east, intersecting strong alteration, structure, graphitic host stratigraphy, and multiple areas of unconformity-associated uranium mineralization. Importantly, the western-most drill fences intersected strong alteration and uranium mineralization, highlighted by drillholes WMA099 which intersected 2.5 metres at 0.82% eU3O8 and WMA099-03 which intersected 4.1 metres at 0.49% eU3O8, which indicate the strong hydrothermal mineralizing system remains open and appears to be improving to the west along the C10S corridor. These drill fences highlight the potential for additional mineralized pods.
Figure 1 – West McArthur Project Location
News Release Page 1 November 6th, 2025
CanAlaska CEO, Cory Belyk, comments, “Following program and budget expansion in August, the 2025 drilling program at West McArthur comes to an end highlighted by some incredible results from the winter and summer drilling programs. The summer program was primarily focused on step-out drilling that delivered a greatly expanded mineralization footprint with clear indications of associated strong alteration at the western-most end of the mineralized Pike Zone corridor drilled to date. Most significantly, the intersected alteration and mineralization characteristics to the west are like those observed in direct relationship to the Pike Zone high-grade mineralization reported from the winter program. This very successful outcome will focus the start of the fully funded $15 million 2026 drilling program scheduled to begin in early January. Continued expansion of Pike Zone is timely and comes within the backdrop of renewed nuclear interest in North America as demonstrated by recent news on October 28th of the United States initiating an $80 billion reactor deal with Westinghouse.”
Figure 2 – Summer Drill Program Results
2025 West McArthur Summer Drill Program Complete Following 2025 Budget Increase
The 2025 summer drill program on the West McArthur project is now complete. Based on positive initial summer drill results, the 2025 exploration budget was increased by 13% in August. The program consisted of twenty-two unconformity tests, thirteen of which contained uranium mineralization. The primary objective of the summer program was focused step outs along strike on the C10S corridor to evaluate for additional zones of uranium mineralization and continuation
News Release Page 2 November 6th, 2025
of the associated large hydrothermal alteration system. The program was focused on understanding the key structural controls and alteration vectors along strike in both directions of the Pike Zone footprint. During the program, the Company successfully expanded the hydrothermal alteration footprint along the C10S corridor 250 metres to the west and 100 metres to the east of the Pike Zone, intersecting key alterations including bleaching, clay, and sooty pyrite associated with fault structures and the graphitic host stratigraphy at the unconformity and into the upper basement. In addition, the Company intersected uranium mineralization associated with these structures and alteration zones on multiple drill fences moving to the west of the main Pike Zone.
Most importantly, the last drill fences of the season completed on the western-most step out intersected unconformity-associated uranium mineralization. Drillholes on these fences were highlighted by WMA099 which intersected 2.5 metres at 0.82% eU3O8 and WMA099-03 which intersected 4.1 metres at 0.49% eU3O8. These drillholes indicate that the hydrothermal mineralizing system remains open to the west along the C10S corridor and highlights the potential for additional high-grade mineralized pods along strike. Along strike to the west of the Pike Zone, the unconformity target area was sparsely tested over 250 metres strike length during the summer drill program and remains completely untested for approximately 800 metres further west where alteration and fault structures were intersected in previous drill programs. The results from the summer drill program show the same hydrothermal alteration intensity, styles, and types as those that are observed in direct association with the Pike Zone near the most significant high-grade intersections drilled to date (Figure 3). Results from the program indicate the hydrothermal alteration, structural intensity, and uranium mineralization appear to be increasing to the west along the C10S trend, highlighting the potential for additional zones of high-grade unconformity uranium mineralization.
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