CanAlaska Announces Best Uranium Intersection to Date at West McArthur's Pike Zone Ultra High-Grade Unconformity Uranium Intersection of 14.5 metres at 12.20% eU 3 O 8 includes 5.0 metres at 34.38% eU 3 O 8 Ultra High-Grade Extended East on New Section; Remains Open on Strike
CanAlaska Announces Best Uranium
Intersection to Date at West McArthur's Pike
Zone
Ultra High-Grade Unconformity Uranium Intersection of 14.5 metres at 12.20% eU
3
O
8
includes
5.0 metres at 34.38% eU
3
O
8
Ultra High-Grade Extended East on New Section; Remains Open on Strike
Saskatoon, Saskatchewan--(Newsfile Corp. - February 5, 2025) -
CanAlaska Uranium Ltd.
(TSXV:
CVV) (OTCQX: CVVUF) (FSE: DH7) ("
CanAlaska
" or the "
Company
") is pleased to provide an
update on the ongoing winter diamond drill program at the Pike Zone on the West McArthur Joint
Venture Project (the "Project"). The Company is releasing the results from the first five drillholes that
have been completed as part of the winter program. These results are highlighted by WMA076-01 which
intersected 14.5 metres at 12.20% eU
3
O
8
,
including 5.0 metres at 34.38% eU
3
O
8
. WMA076-01
expands the ultra high-grade footprint of the Pike Zone at the unconformity by at least 15 metres to the
east. The ultra high-grade mineralization remains open on strike. The West McArthur project, a Joint
Venture with Cameco Corporation, is operated by CanAlaska that holds an 85.97% ownership in the
Project (Figure 1). CanAlaska is sole-funding the 2025 West McArthur program and will further increase
its majority ownership in the Project as a result.
Figure 1 – Project Location Map
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CanAlaska CEO, Cory Belyk, comments,
"We are very pleased to announce to our shareholders the
initial results from the 2025 drilling program at Pike Zone which include the best ultra high-grade
uranium mineralization encountered to date on the project. This ultra high-grade intersection at the
eastern end of Pike Zone is on an adjacent drill section and remains completely open on strike which
is a very exciting outcome from the first few weeks of drilling. In addition, the team is working on
discovering, understanding, and defining additional zones of high-grade 'pearls on a string' that make
these eastern Athabasca Basin deposits unique. The style and grade of uranium mineralization we
are encountering at Pike Zone continues to be very reminiscent of the nearby giant McArthur River
tier 1 uranium deposit owned by Cameco and Orano. Initial results from this 2025 drill campaign have
been exceptional."
2025 West McArthur Winter Exploration Program Update
The ongoing 2025 West McArthur winter program is focused on continued expansion and delineation of
the ultra high-grade Pike Zone uranium discovery. The Pike Zone discovery is located in the eastern
Athabasca Basin, 20 km to the west of Cameco's McArthur River mine site. Currently, three drills are
active on the Pike Zone for the 2025 winter program.
Figure 2 – Winter Drill Program Update
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One drill is focused on delineating the Pike Zone in step outs to the east of the high-grade mineralization
intersected during the 2024 exploration program. Within this target area, WMA076-01 has been
completed and intersected 14.5 metres at 12.20% eU
3
O
8
,
including 5.0 metres at 34.38% eU
3
O
8
at
the unconformity (Figure 2). This drill hole extends the ultra high-grade unconformity uranium
mineralization at least 15 metres to the east. Future drill testing in this target area will focus on continued
step outs to the east to define the high-grade uranium mineralization which remains completely open.
Figure 3 – WMA076-01 Drill Core Photograph
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A second drill is focused on delineating the Pike Zone in step outs to the west of the ultra high-grade
mineralization during the 2024 exploration program. Within this target zone, WMA094-04 has been
completed and intersected 4.9 metres at 3.04% eU
3
O
8
, including 1.5 metres at 8.87% eU
3
O
8
at the
unconformity (Figure 2). This drill hole confirms continuity of the high-grade unconformity uranium
mineralization at the currently understood western edge of Pike Zone where the C10S corridor remains
untested for approximately 1,000 metres. In addition, the basement alteration in WMA094-04, consisting
of strong chlorite and clay, penetrates deep into the basement rocks along this drill fence, suggesting
evidence for the movement of significant hydrothermal fluids along the basement structures. WMA094-
05 was also completed in this target area and returned significant sandstone and basement alteration,
however, no uranium mineralization was intersected because it overshot the ideal target at the
unconformity. WMA094-5 confirmed a fault offset of the unconformity is present moving to the west along
the target corridor. The structural offset and confirmed sandstone and deep basement alteration in this
area are important indicators for the existence of mineralizing hydrothermal fluids. Future drill testing in
this target area will focus on continued step outs to the west to evaluate the C10S corridor for additional
ultra high-grade unconformity uranium mineralization.
The third drill is focused on delineating the unconformity mineralization between the currently delineated
high-grade pods to evaluate mineralization continuity in this area. Within this target area, WMA082-16
and WMA082-17 have been completed. WMA082-16 intersected 4.2 metres at 1.81% eU
3
O
8
, including
0.9 metres at 5.54% eU
3
O
8
, confirming the presence of additional uranium mineralization between the
two currently understood pods (Figure 2). The third drill will continue to evaluate this target area for
additional unconformity associated uranium mineralization.
The ongoing winter drill program is planned to achieve an estimated 25 unconformity target
intersections. The Company is optimizing unconformity target intersections by continued use of
downhole mud-motor deviation technology for pilot holes and directional offcuts to increase drilling
efficiency, achieve target intercept accuracy, and to significantly lower drilling costs. The Company
expects to complete the winter portion of the 2025 approved exploration program in April.
Drillhole Details:
WMA076-01
: The lower sandstone column of WMA076-01 is strongly bleached with limonite alteration
extending for over 90 metres above the unconformity. Within the lower sandstone column, multiple metre-
scale fault zones were intersected and are characterized by broken to blocky core, large intervals of
hydrothermal dravitic breccias with localized re-activation, and zones of quartz dissolution and complete
clay replacement. Near the unconformity, the fault zones are associated with silicification and intense
sooty pyrite alteration immediately above the main mineralized interval. WMA076-01 contains one main
interval of unconformity-associated uranium mineralization characterized by massive to semi-massive
replacement-style uranium mineralization followed by intervals of disseminated and fracture-controlled
mineralization. The uranium mineralization is associated with intense sooty pyrite, white clay
replacement of the host rock, and dark red hematite alteration (Figure 3; Table 1). Within the mineralized
interval, several intervals of core loss were recorded due to intense alteration and quartz dissolution. The
unconformity contact between the Athabasca sandstone and underlying basement rocks is interpreted to
be at 800.1 metres down hole. The basement is strongly clay and chlorite altered.
WMA082-16
: The lower sandstone column of WMA082-16 is strongly bleached with limonite alteration
extending for over 80 metres above the unconformity. Within the lower sandstone column, multiple metre-
scale fault zones were intersected and are characterized by broken to blocky core, large intervals of
hydrothermal dravitic breccias with localized re-activation, and zones of quartz dissolution. Near the
unconformity, the fault zones are associated with silicification and sooty pyrite alteration immediately
above a zone of unconformity uranium mineralization (Table 1). The unconformity uranium mineralization
is characterized by semi-massive to disseminated uranium mineralization associated with strong sooty
pyrite alteration. The unconformity contact between the Athabasca sandstone and underlying basement
rocks is interpreted to be at 807.3 metres down hole. The basement is strongly clay and chlorite altered
as a halo around an interval of basement-hosted high-grade uranium mineralization (Table 1). The
basement mineralization is characterized by semi-massive, blebby, and fracture-controlled uranium
mineralization associated with strong hematite alteration.
WMA082-17:
The lower sandstone column of WMA082-17 is strongly bleached with limonite alteration
extending for over 90 metres above the unconformity. Within the lower sandstone column, multiple metre-
scale fault zones were intersected and are characterized by broken to blocky core, large intervals of
hydrothermal dravitic breccias with localized re-activation, and zones of quartz dissolution. Near the
unconformity, the fault zones are associated with metre-scale intervals of strong silicification and clay
alteration immediately above the unconformity. The unconformity contact between the Athabasca
sandstone and underlying basement rocks is interpreted to be at 810.0 metres down hole. The
basement is strongly clay and chlorite altered with dravitic-clay veining and multiple re-activated fault
zones throughout the interval as a halo around an interval of basement-hosted uranium mineralization
(Table 1). The basement mineralization is characterized by disseminated and fracture-controlled
uranium mineralization associated with strong clay replacement, chlorite, and hematite alteration.
WMA094-04:
The lower sandstone column of WMA094-04 is strongly bleached with limonite alteration
extending for over 80 metres above the unconformity. Within the lower sandstone column, multiple metre-
scale fault zones were intersected and are characterized by broken to blocky core, large intervals of
hydrothermal dravitic breccias with localized re-activation, and zones of quartz dissolution. Near the
unconformity, the fault zones are associated with strong clay replacement, silicification, and sooty pyrite
alteration immediately above a zone of unconformity uranium mineralization. The unconformity uranium
mineralization is characterized by semi-massive to disseminated worm-rock style uranium mineralization
followed by structurally controlled uranium mineralization (Table 1). The uranium mineralization is
associated with sooty pyrite, clay, and hematite alteration. Within the mineralized interval, one interval of
core loss was recorded due to intense alteration and quartz dissolution. The unconformity contact
between the Athabasca sandstone and underlying basement rocks is interpreted to be at 797.3 metres
down hole. The basement is strongly clay and chlorite altered as a halo around multiple re-activated fault
zones resulting in the local degradation of the host-rock fabric in the basement rocks.
WMA094-05:
The lower sandstone column of WMA094-05 is strongly bleached with limonite alteration
extending for over 100 metres above the unconformity. Within the lower sandstone column, multiple
metre-scale fault zones were intersected and are characterized by broken to blocky core, large intervals
of hydrothermal dravitic breccias with localized re-activation, and zones of strong quartz dissolution and
localized clay replacement. The unconformity contact between the Athabasca sandstone and underlying
basement rocks is interpreted to be at 805.8 metres down hole. The basement is clay and chlorite
altered with several narrow re-activated fault zones.
Table 1 - Radiometric Equivalent Uranium Grades
DDH
From
(m)
To
(m)
Length
(m)
6
Average Grade
(% eU
3
O
8
)
7
WMA076-01
1,4
790.1
804.6
14.5
12.20
Including
5
796.0
801.0
5.0
34.38
WMA082-16
2,4
804.8
807.9
3.1
0.68
WMA082-16
2,4
811.8
816.0
4.2
1.81
Including
5
814.2
815.1
0.9
5.54
WMA082-17
2,4
816.5
818.4
1.9
0.18
WMA094-04
3,4
793.8
798.7
4.9
3.04
Including
5
795.6
797.1
1.5
8.87
1
.
WMA076-01 was drilled at an azimuth of 325˚ with an inclination of -75.0˚, collared at 477,340 mE / 6,396,538 mN, 605 m A.S.L. (UTM
NAD83 Z13N) as a daughter hole from WMA076.
2
.
WMA082-16 and WMA082-17 were drilled at an azimuth of 295˚ with an inclination of -79.3˚, collared at 477,345 mE / 6,396,525 mN, 605 m
A.S.L. (UTM NAD83 Z13N) as a daughter hole from WMA082.
3
.
WMA094-04 was drilled at an azimuth of 313˚ with an inclination of -80.0˚, collared at 477,236 mE / 6,396,517 mN, 600 m A.S.L. (UTM
NAD83 Z13N) as a daughter hole from WMA094.
4
.
Intersection interval is composited above a cut-off grade of 0.1% eU
3
O
8
with a maximum of 1.0 m of internal dilution.
5
.
Intersection interval is composited above a cut-off grade of 2.0% eU
3
O
8
with a maximum of 1.0 m of internal dilution.
6
.
All reported depths and intervals are drill hole depths and intervals, unless otherwise noted, and do not represent true thicknesses, which
have yet to be determined.
7
.
Radiometric equivalent ("eU
3
O
8
") derived from a calibrated gamma downhole probe.
Geochemical Sampling Procedures and Use of Radiometric Equivalent Grades
All drill core samples from the program were shipped to the Saskatchewan Research Council
Geoanalytical Laboratories (SRC) in Saskatoon, Saskatchewan in secure containment for preparation,
processing, and multi-element analysis by ICP-MS and ICP-OES using total (HF:NHO3:HClO4) and
partial digestion (HNO3:HCl), boron by fusion, and U
3
O
8
wt% assay by ICP-OES using higher grade
standards. Assay samples are chosen based on downhole probing radiometric equivalent uranium
grades and scintillometer (SPP2 or CT007-M) peaks. Assay sample intervals comprise 0.3 - 0.8 metre
continuous half-core split samples over the mineralized intervals. With all assay samples, one half of the
split sample is retained and the other sent to the SRC for analysis. The SRC is an ISO/IEC 17025/2005
and Standards Council of Canada certified analytical laboratory. Blanks, standard reference materials,
and repeats are inserted into the sample stream at regular intervals by CanAlaska and the SRC in
accordance with CanAlaska's quality assurance/quality control (QA/QC) procedures. Geochemical
assay data are subject to verification procedures by qualified persons employed by CanAlaska prior to
disclosure.
During active exploration programs drillholes are radiometrically logged using calibrated downhole
GeoVista NGRS and TGGS (Triple GM) gamma probes which collect continuous readings along the
length of the drillhole. Preliminary radiometric equivalent uranium grades ("eU
3
O
8
") are then calculated
from the downhole radiometric results. The probe is calibrated using an algorithm calculated from the
calibration of the probe at the Saskatchewan Research Council facility in Saskatoon and from the
comparison of probe results against geochemical analyses. At extremely high radiometric equivalent
uranium grades, downhole gamma probes may become saturated, resulting in the probe being
overwhelmed, which in turn can create difficulties in accurately determining extremely high-grade
radiometric equivalent uranium grades, and a cap may be applied to the grade. The equivalent uranium
grades are preliminary and are subsequently reported as definitive assay grades following sampling and
chemical analysis of the mineralized drill core. In the case where core recovery within a mineralized
intersection is poor or non-existent, radiometric grades are considered to be more representative of the
mineralized intersection and may be reported in the place of assay grades. Radiometric equivalent
probe results are subject to verification procedures by qualified persons employed by CanAlaska prior
to disclosure.
All reported depths and intervals are drill hole depths and intervals, unless otherwise noted, and do not
represent true thicknesses, which have yet to be determined.
About CanAlaska Uranium
CanAlaska Uranium Ltd. (TSXV: CVV) (OTCQX: CVVUF) (FSE: DH7) is a Canadian based exploration
company and holds interest in approximately 500,000 hectares (1,235,000 acres) in Canada's
Athabasca Basin focused on exploration and discovery of high-grade unconformity uranium deposits.
The Company is actively advancing the Pike Zone discovery - a new high-grade uranium discovery on its
West McArthur Joint Venture project in the eastern Athabasca Basin. In addition, the Company has
several other uranium-focused exploration programs. CanAlaska deploys a hybrid project generator
model, focusing on the acquisition and sale of prospective projects, while also executing exploration
programs on CanAlaska's most strategic land holdings.
The Company's extensive portfolio has attracted
international mining companies, including Cameco Corporation and Denison Mines as active partners.
CanAlaska is led by an experienced team of professionals with a proven track record of discovery.
The Company's head office is in Saskatoon, Saskatchewan, Canada with a satellite office in Vancouver,
BC, Canada.
For further information visit
www.canalaska.com
.
The Qualified Person under National Instrument 43-101 Standards of Disclosure for Mineral Projects for
this news release is Nathan Bridge, MSc., P. Geo., Vice-President Exploration for CanAlaska Uranium
Ltd., who has reviewed and approved its contents.
On behalf of the Board of Directors
"Cory Belyk"
Cory Belyk, P.Geo., FGC
CEO, President and Director
CanAlaska Uranium Ltd.
Contacts:
Cory Belyk, CEO and President
General Enquiry
Tel: +1.306.668.6900
Tel: +1.306.668.6915
Email:
Email:
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Company expects, believes or anticipates will or may occur in the future are forward-looking
statements.
Forward-looking statements are frequently identified by such words as "may", "will",
"plan", "expect", "anticipate", "estimate", "intend" and similar words referring to future events and
results. Forward-looking statements are based on the current opinions and expectations of
management.
These forward-looking statements involve numerous assumptions made by the
Company based on its experience, perception of historical trends, current conditions, expected future
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statements involve substantial known and unknown risks and uncertainties that contribute to the
possibility that the predictions, forecasts, projections and other forward-looking statements will prove
inaccurate, certain of which are beyond the Company's control.
Actual events or results may differ
materially from those projected in the forward-looking statements and the Company cautions against
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