The largest and highest grade deposits in the world are at the Unconformity
The largest and highest grade deposits in the world are at the Unconformity or in highly altered sediments just above it with a distinctive signatures extending vertically hundreds of metres to surface.
The major known uranium deposits are associated with often graphitic structures in the basement gneiss straddling the unconformity with the overlying sedimentary basin.
The Company’s exploration strategy is based on discovery of Tier 1 deposits like McArthur River and Cigar Lake in unconformity or sediment hosted settings under cover.
Source: Visual Capitalist, 2012
McArthur River Long Section (Uranium in Sandstone) Showing presence of Uranium geochemical halo developed at surface 500 m above the deposit. Source: CIMIC 185 Ansdell 2018 Society of Economic Geology U Overview Uranium Presentation
The Athabasca Basin Major Known Uranium Deposits Dsicovery Over Time
The region hosts some of the highest grade and lowest cost uranium deposits in the world including renowned projects, such as Cigar Lake, McArthur River, Arrow, Triple R, Millennium and Wheeler River. There have been no major discoveries of the Cigar Lake or McArthur River type deep under cover since the 1980’s.