Standard Uranium holds a 100%-interest in the 18,101-hectare Sun Dog project along the northwestern edge of the Athabasca Basin (Figure 1). The Sun Dog project is comprised of 8 contiguous mineral claims (Figure 2) located near Uranium City at the south end of the prolific Beaverlodge uranium district where uranium was mined between 1953 and 1982. Unlike the previously mined lower-grade Beaverlodge type deposits from this area, Standard’s exploration strategy at Sun Dog is targeting high-grade unconformity-related deposits that are typical of the Athabasca Basin, which would be a remarkable discovery in Canada’s original uranium mining district.
The three most promising historical target areas (Skye, Java, and Haven; Figure 3) were visited in Fall 2020 to confirm the location of historical exploration results and provide context for current work. Fall 2020 sampling efforts at the Skye, Java, and Haven target areas identified several zones of off-scale and visible uranium mineralization at surface (Photo 1 and Photo 2), and returned uranium assay results up to 3.58% U3O8, 1.7% U3O8, and 0.7% U3O8, respectively. Additionally, the analytical results reveal a correlation between uranium and gold mineralization, while boron and other pathfinder elements highlight the potential for a robust alteration footprint associated with uranium mineralization.
The Company completed four drill holes for 1,242 metres of diamond drilling in winter 2022, during an inaugural reconnaissance-scale drill program.
Highlights from the project include:
The target areas at the Sun Dog project have many attributes that are favourable for the formation of high-grade unconformity-related uranium mineralization. The key geological factors include uranium-enriched bedrock, reactivated and graphitized structures, Athabasca Supergroup sandstone cover, and favourable basement competency contrasts.
Photo 2. Athabasca sandstone hosting secondary uranium oxide/hydroxide mineralization with associated hydrothermal hematite
Photo 3: Hydrothermal quartz-hematite breccias intersected in SD-22-001 basement rocks indicating repeated deformation and strong fluid flow in the Haven area. B) Hydraulic breccia containing white clay, dravite, and hematized druzy quartz in SD-22-001
Photo 4: A) Deformed strongly graphitic pelitic gneiss in the basement of SD-22-002. B) Strongly limonite-hematite altered hydrothermal breccia in SD-22-002 at 273.5 m. C) Highly strained and folded graphitic metapelite in SD-22-003 at 163.5 m. D) Structurally controlled elevated radioactivity up to 300 cps within a graphite-hematite fracture network cross-cutting graphitic metapelite in SD-22-003.
Photo 5: A) Brittle fault zone overprinting moderately clay-chlorite altered orthogneiss in SD-22-004. B) Semi-brittle fault intersected from 146.8 to 150.5 m in SD-22-004 overprinting moderately altered orthogneiss.
Photo 6. Close-up photos of fault-controlled black uraninite and secondary yellow uranium mineralization on surface at the Haven target area, reaching >65,535 cps (off-scale) on the RS-125 scintillometer.
Photo 7. A) Dravite-kaolinite alteration at surface within a quartz breccia outcrop proximal to surface mineralization in the Skye target area. B) Dravite alteration within a faulted sandstone outcrop in the Haven target area.
Photo 12: CEO Jon Bey and VP of Exploration Sean Hillacre inside the core shack at the Sun Dog exploration camp.
Figure 7. Plan map showing winter 2022 drill holes around Johnston Island in the Haven, Johnston-Bay, and Java target areas. Historical mineralized drill holes, geophysical conductors, interpreted faults, and surface uranium showings are highlighted.
Figure 8. Plan map of south Johnston Island highlighting the current Haven and Walli surface expressions of uranium mineralization, expanded during fall 2022 mapping.
Figure 9. Schematic cross-section highlighting geology, structure, and alteration in drill hole SD-22-001, relative to mapped surface mineralization at the Haven showing.
Figure 10. Schematic cross-section highlighting geology, structure, and alteration in drill hole SD-22-003 within the Johnston-Bay target area.
Disclosure of Technical and Scientific Information
Except as otherwise noted herein, Sean Hillacre, MSc. P.Geo., Standard Uranium’s VP Exploration, has reviewed and approved the scientific and technical information contained in this website. Mr. Hillacre is a Qualified Person within the meaning of Canadian Securities Administrator’s National Instrument 43-101.