Jared Heise, BSc

J. Heise¹, K. Ansdell¹

¹Geology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

The Baker Lake Group within Atha Energy’s Angilak Property (Nunavut) preserves a diverse Paleoproterozoic supracrustal succession that hosts significant uranium mineralization but remains only partially characterized at the drill‑core scale. This project establishes a preliminary lithostratigraphic framework for ten representative samples collected from the Atha Energy KU drill site, spanning the Christopher Island and lower Kazan formations of the Dubawnt Supergroup. Hand sample and petrographic descriptions, supported by ongoing geochemical analyses, reveals a sequence of fine‑grained siltstones, quartz‑ and feldspar‑rich sandstones, volcaniclastic units, felsic tuffs, and a polymictic conglomerate. These observations indicate stratigraphic continuity across the sampled interval and highlight textural and mineralogical features—including hematite staining, volcanic clast populations, calcareous alteration, and localized quartz veining—that may record depositional processes and post‑depositional modification within the Angikuni Basin. Integration of whole‑rock geochemistry will refine unit classification, constrain tectonic setting, and evaluate whether secondary minerals preserve signatures related to basement‑hosted uranium mineralization in the region.