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CanAlaska Uranium Ltd. – Winter Drilling at West McArthur and Cree East Uranium Projects Hit Graphitic Target Zones and Strong Alteration Systems

April 12, 2012

 Toronto Stock Exchange (TSX): CVV   

VANCOUVER, April 13, 2012 /PRNewswire/ - CanAlaska Uranium Ltd. (TSX – CVV) (“CanAlaska” or the “Company”) is pleased to announce a preliminary
summary of drilling for its two winter drill programs in the Athabasca
Basin. Drilling was undertaken at both the West McArthur and Cree East
projects.  The West McArthur Project is a 50/50 joint venture between
the Company and MC Resources Canada Ltd., a subsidiary of Japan’s
Mitsubishi Corporation.  The Cree East Project is a 50/50 joint venture
between the Company and a consortium of S. Korean companies, comprising
Hanwha Corp., KEPCO, KORES and SK Networks,

Drill core samples are currently awaiting geochemical analyses.  Crews
are departing the field, and detailed data interpretation is due to
commence.  The two programs comprised over Cdn$6 million in exploration
expenditures with 12,434 metres of drilling.

West McArthur Project:

Seven diamond drill holes (WMA 028 to 034) were completed in
February-March 2012, to test a series of individual zones where the
resistivity lows were coincident with the EM conductors within the Grid
5 area.  Total meterage drilled in the season was 6,422 metres,
including one abandoned drill hole WMA031.  The winter 2012 drill
programme has demonstrated on Grid 5 the presence of requisite
geological environment for unconformity uranium deposits. Significant
faulting and fracturing are present in a number of drill holes, with
individual radioactive spikes or elevated radioactivity in zones of
hydrothermal alteration.

From drill core and geophysical data, Grid 5 basement lithologies have
now been confirmed to consist of mostly semi-pelitic to psammitic
assemblage of rock units, containing a central unit of graphitic
pelites.  Locally there is alteration typical of the geological
environment favourable for uranium mineralization.  Two of the drill
holes showed pelitic basement assemblages with graphite units.  The
other five holes showed metasedimentary basement rocks composed of a
mix of semi-pelites and psammites.   Pegmatite and granite interlayers
are present in all drill holes.  Frequent fracture zones and major
faults were intersected in drill holes WMA028, 032, 033, and 034. 
Drill hole WMA029 had a broad zone of intense fracturing at 617 to 633
metres.  The basement rocks are deeply altered by hydrothermal action
in drill holes WMA028, 033 and 034.

For maps click here: http://www.canalaska.com/s/News.asp?ReportID=518515

In all drill holes which could be probed by borehole geophysics, there
were indications that the drill hole unconformity intersection point
was within 20 to 200 metres of the targeted conductive (graphitic)
horizon. This close identification of the conductive target location
nearby, either in front of, or behind, the drill intersection point is
believed to be directly attributable to the greatly increased precision
of geophysical targeting by the newly-developed SQUID (Superconducting Quantum Interfacing Device) receiver used during the
2011-2012 preparatory TDEM surveys.

Cree East Project:

Fifteen diamond drill holes were attempted on the Cree East Project
during late January, February and March 2012 with completed drilling of
6,012 metres. However, only ten drill holes reached their targeted
depth in the basement.  This was mostly due to extremely difficult
drilling conditions related to intensely hydrothermally altered
aureoles in the overlying Athabasca sandstone units within
newly-targeted Zone B.

The Zone B target became the priority drill target with the discovery,
in the first drill hole, of a major hydrothermal system.  In this drill
hole the entire 400-metre sandstone column is heavily fractured, clay
altered and friable.  An additional five drill holes show a central
area of at least 130 metres x 180 metres, and trending towards drill
hole CRE084, which is 400 metres to the east.  Drill hole CRE084 has
only minor overlying sandstone alteration, but there is significant
alteration in the basement within graphitic pelite units.

The last drill hole in Zone B, CRE091, was not able to be completed
because of deteriorating rock and field operating conditions.  The
drill hole was targeting a zone of major basement offsets (at least 50
metres) in proximity of an EM basement conductor, with zones of clay
alteration, de-silicification and zones of rotated sandstone blocks in
the sandstone.  The hole was stopped at about 150 metres above the
unconformity.  The drill casing is in place and this hole can be
completed during the next drill season.

In Zone A,  where previous drill holes had indicated major basement
faults, clay alteration and hydrothermal activity, drill hole CRE085
confirmed further significant faulting near drill hole CRE073, and
blocks of banded iron formation within the overlying sandstone, but did
not penetrate any major uranium mineralization.

Poor field conditions prevailing at the commencement of the winter
programme required that the main program was reversed in order, and two
new areas were drilled initially, while ice roads and sites were being
accessed.   In Zone J, four drill holes were completed and in Zone G,
one hole was completed.  In Zone J, the targeted graphitic conductor
was intercepted with the first drill hole.  This successful
intersection of the target is attributed to the higher precision of the
SQUID geophysical surveys which were carried out prior to the drill
program.  Graphitic conductors and some sandstone alteration were
intersected in Zones J and G, and further follow-up drilling will be
required to understand the target geology.

Drill core samples from both projects are in transit to the laboratory
for multi-element analyses to confirm the uranium content of
intersections showing occasional radioactive spikes, or high background
radioactivity.

Dr. Karl Schimann, CanAlaska’s V.P. – Exploration commented:  “The field
crews completed the winter drill programs under difficult ground and
weather conditions.  These were overshadowed by the significant
increase in targeting success, and geological information received. 
The alteration systems, which surround the typical Athabasca uranium
deposits, show distinct chemical patterns and clay alteration.  This
winter’s drill programs successfully localized targets in both projects
for CanAlaska’s continued exploration efforts for the discovery of a
major unconformity  uranium deposit.”

Peter Dasler, M.Sc., P Geo. is the qualified technical person
responsible for this news release.

About CanAlaska Uranium

CANALASKA URANIUM LTD. (CVV — TSX, CVVUF — OTCBB, DH7F — Frankfurt) is undertaking uranium exploration in twenty one uranium projects in
Canada’s Athabasca Basin — the “Saudi Arabia of Uranium”.  Since
September 2004, the Company has aggressively acquired one of the
largest land positions in the region, comprising over 2,500,000 acres
(10,117 sq. km or 3,906 sq. miles).  To-date, CanAlaska has expended
over Cdn$85 million exploring its properties and has delineated
multiple uranium targets.

For more information, visit www.canalaska.com

On behalf of the Board of Directors

(signed)

Peter Dasler, M.Sc., P.Geo., President & CEO,  
CanAlaska Uranium Ltd.

The TSX has not reviewed and does not accept responsibility for the
adequacy or accuracy of this release: CUSIP# 13708P 10 2. This news
release contains certain “Forward-Looking Statements” within the
meaning of Section 21E of the United States Securities Exchange Act of
1934, as amended. All statements, other than statements of historical
fact, included herein are forward-looking statements that involve
various risks and uncertainties. There can be no assurance that such
statements will prove to be accurate, and actual results and future
events could differ materially from those anticipated in such
statements. Important factors that could cause actual results to differ
materially from the Company’s expectations are disclosed in the
Company’s documents filed from time to time with the British Columbia
Securities Commission and the United States Securities & Exchange
Commission.

SOURCE CanAlaska Uranium Ltd.


Source: PR Newswire