CanAlaska Uranium Ltd. Announces Additional Uranium Intersections from Summer Drill Program
CanAlaska Uranium Ltd. (CanAlaska or the Company) announced successful completion of the $5 million 2022 drilling program at the West McArthur project. The majority of this program was focused on expansion of the newly announced high-grade basement- hosted uranium discovery on the project. The Company reported three additional drill holes with elevated radioactivity, highlighted by a 12.4 meter (40.7 feet) intersection that contains multiple meter to sub-meter scale intervals of elevated radioactivity in WMA072-3, the last hole of the program. Geochemical assay results from the summer drill program, outside of the previously reported high-grade intersection of 2.4% U3O8 over 9.0 metres from 906.5 meters in WMA067, are pending. The West McArthur project is operated by CanAlaska, which currently holds a 78.91% ownership in the project. The drilling program consisted of 10,632 meters over 11 completed drill target tests. The initial program was focused on continued expansion of the 42 Zone mineralization and the immediate 1.8 kilometer anomalous trend to the southwest, in addition to regional testing of the newly acquired geophysical data. After the discovery of high-grade basement-hosted uranium mineralization in WMA067, on the second regional test of the drill program, the Company focused its efforts on understanding the controls of the mineralization. WMA067 is located 6 kilometers along strike to the southwest of the Company's 42 Zone mineralization on the C10 South conductive corridor. As part of the discovery follow-up, eight drill tests were completed on the same fence or immediately along strike of the WMA067 discovery hole. Elevated radioactivity was intersected in drillholes WMA067-4, WMA067-4 tested 30 meters up-dip of WMA067. The basement consists of a wide package of graphitic and non-graphitic pelitic metasediments overprinted by clay, chlorite, and hematite alteration associated with fault zones that contain clay gouge, broken core, and cataclastic breccias. The drill hole intersected two zones of elevated radioactivity between 887.4 and 888.3 meters, consisting of one 60 cm and one 10 cm interval (> 300 cps on handheld CT007-M scintillometer). The mineralization is characterized by semi-massive and vein-controlled pitchblende with weak yellow uranium secondaries. WMA067-4 is interpreted to have intersected the targeted horizon to the west of the main mineralized controlling structure. Core recovery throughout the basement intersection is 100%. WMA070 tested 80 metres up-dip and to the east of WMA067. The basement consists of a wide package of graphitic and non-graphitic pelitic metasediments overprinted by clay, chlorite, and hematite alteration. Multiple graphitic fault zones characterized by cataclasites, clay gouge, and enhanced alteration were intersected throughout the graphitic pelite sequence. The drill hole intersected a 4.5 metre wide zone that contains multiple sub-metre scale intervals of elevated radioactivity (> 300 cps on handheld CT007-M scintillometer). The mineralization is characterized by vein-controlled and disseminated pitchblende with weak yellow uranium secondaries. WMA070 is interpreted to have intersected the targeted horizon to the east of the main mineralized controlling structure. Core recovery throughout the basement intersection is 100%. An additional three drill holes were completed on the WMA067 fence. WMA067-1 intersected the targeted horizon 25 metres immediately down-dip of WMA067, WMA067-2 intersected the targeted horizon 30 metres along strike to the east of WMA067, and WMA071 intersected the targeted horizon 60 meters up-dip and to the west to WMA067. All three drill holes intersected variably bleached and chlorite-altered basement. In addition, all three drill holes intersected the targeted graphitic metasedimentary package and re-activated fault structures. The three drill holes that lack significant radioactivity did not intersect the mineralized controlling structure. However, these three drill holes confirm the system is still active in the area, with alteration and structure that are indicative of the mineralizing event and help to define the plunge of the basement-hosted mineralization along the WMA067 fence. Additionally, WMA073 was completed 160 metres along strike to the northeast of the WMA067 fence, targeting the uppermost contact of the interpreted graphitic package that is host to the WMA067 mineralization. WMA073, drilled at an azimuth of 320° with an inclination of -80°, intersected a 40 meter wide structural zone in the medial sandstone column from 573 m that is characterized by strong bleaching, silicification, and limonite alteration associated with steeply-dipping fractures, clay-healed breccias, and isolated sandy-clay gouge. Several intervals of poor recovery, 10 - 50%, were reported within the core of the structural zone between 587 and 605 meters. The basement of WMA073, below the unconformity at 804.5 meters, consisted of footwall metasediments followed by granitic gneiss. Based on the intense faulting and alteration in the lower sandstone, coupled with the footwall stratigraphy, it is interpreted that WMA073 overshot the target at the unconformity by approximately 60 meters. Based on these results, immediate follow up of the sandstone structure back to the ideal target at the unconformity is warranted.