April 13, 2012 Winter Drilling at West McArthur and Cree East Uranium Projects Hit Graphitic Target Zones and Strong Alteration Systems
CanAlaska News Release - April 13 2012
Vancouver, Canada, April 13th, 2012 - 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
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
West McArthur Project:
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
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.
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.
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
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.
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
Emil Fung, Director & V.P. - Corp. Dev.
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
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