HISTORICAL AND REGIONAL INFORMATION

Regional Geology
The Thelon Basin is a Paleoproterozoic intracratonic basin that is coeval with the Paleoproterozoic Athabasca Basin, SK and the Kombolgie Basin in northern Australia.  The Thelon sandstone – basement contact is considered to be highly prospective for unconformity-type uranium deposits. The comparison of the geology of the Thelon Basin and its uranium deposits and occurrences to the Athabasca Basin and its high-grade unconformity-type uranium deposits implies that the Thelon Basin possesses a high potential for additional uranium discoveries.  Uranium mineralizations occurring at the unconformity (Boomerang Lake prospect) and within the basement proximal to the unconformity (the five deposits that form the Kiggavik-Andrews Lake uranium district) remain the preferred high priority target for exploration in the under-explored Thelon Basin.

The Garry Lake property covers a structurally disrupted basement-sandstone domain that has similarities to major structural corridors in the eastern and central segments in the Athabasca Basin.  The Thelon sandstone – basement contact remains highly prospective for unconformity-type uranium mineralization and the discovery of high-grade uranium deposits. The high potential for additional uranium discoveries within the Thelon Basin is supported and strengthened by striking similarities in sedimentology, diagenesis and pro- and retrograde evolution of the basement complexes when compared to similar features for the Athabasca Basin. Uranium mineralization occurring at the unconformity on Uravan’s Boomerang Lake property and the Kiggavik-Andrews Lake basement-hosted mineralization which is near and beneath the sub-Thelon paleosurface remain the preferred high priority targets for exploration in the Thelon Basin. The Garry Lake land package covers the interpreted up-ice terminus of a high-grade uraniferous boulder train and several extensive NWSE trending highly-anomalous surface geochemical ‘lineaments’ defined by previous operators in the early 1980’s. The surface mineralization is hosted in favourable basement metasedimentary rocks belonging to the lower Proterozoic Amer Group, overlying coarse-grained clastic sedimentary rocks of the Thelon Formation.

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Exploration History
In the early 1980’s the most significant results from the initial exploration on the Garry Lake uranium property by Kidd Creek Minerals was the discovery of 19 uraniferous boulders that define a 3 kilometer long dispersal train. The 19 uraniferous boulders yielded assays ranging from 0.87% U3O8 to 27.12% U3O8 with an average of 7.19% U3O8. Uranium soil anomalies collected in the area define the geometry of this train, and also suggest the presence of a second uraniferous boulder train located several 100 meters to the west of the original train. This uraniferous boulder train is oriented parallel to the interpreted ice flow direction of 330o and located near the erosional edge of the northern Thelon Basin. The elemental signature of individual mineralized boulders is U-Pb-Se-Te-Ag-Cu-As-S. This polymetallic elemental signature along with the carbonate gangue and clay alteration composition of the boulders indicates that this mineralization belongs to the fracture-controlled basement hosted unconformity-related uranium deposit type (Miller, 1996). This surface polymetallic unconformity-type mineralization is hosted in favourable basement metasedimentary rocks belonging to the lower Proterozoic Amer Group, which is in part overlain by coarse-grained fluvial clastic rocks of the Thelon Formation.