Vancouver, B.C., November 21, 2013; West Cirque
Resources Ltd. (WCQ: TSX.V) has completed its
2013 field program on the Tanzilla Copper-Gold (Cu-Au) Porphyry
Project, northwestern B.C. Exploration was funded by
Freeport-McMoRan of Canada Limited ("Freeport") as part of an
Earn-In Agreement announced on March 4, 2013. West Cirque was the
operator of the program in 2013.
The
primary goal of the 2013 field program was to delineate porphyry
drill targets beneath a large advanced argillic lithocap known as
Silica Ridge. Previous work by West Cirque had identified
chalcopyrite bearing, altered porphyritic intrusive rocks in creek
and gulley outcrops near the base of the ridge (see news release,
September 28, 2011). Additionally, an induced polarization (IP)
survey in 2011 outlined a 2.2 by 0.5 to 1.3 kilometer chargeability
high flanking the ridge. The 2013 program included a small infill
IP survey across Silica Ridge, as well as additional geological,
structural and alteration mapping.
Alteration mapping at
Tanzilla was guided by the analysis of 175 rock samples with a
Terraspec mineral analyzer. The Terraspec is a portable reflectance
spectroscopy system used to identify alteration minerals,
especially clay minerals which are impossible to differentiate by
normal field techniques. Mineral analysis helps identify patterns
of alteration which can provide vectors to centers of porphyry
mineralization. The Terraspec analyses confirmed that the central
alteration at Silica Ridge and an extension about 3 kilometers to
the southeast (Gopher Zone) is dominated by advanced argillic
assemblages, including quartz, pyrophyllite, diaspore, alunite,
kaolinite, dickite, topaz and dumortierite. Widespread phyllic
alteration (quartz, sericite/muscovite, pyrite) is also present on
Silica Ridge as well as the Circle Trench zone, one kilometer to
the southwest, and the West Gossan zone, about three kilometers to
the west.
Geological mapping in
2013 provided important new data about the alteration system at
Tanzilla:
-A
previously unrecognized extension to the alteration system was
located 1.8 kilometers northwest of and 545 meters elevation below
the top of Silica Ridge. Outcrops in the new zone include intensely
silica, clay, sericite and pyrite or hematite altered volcanics
(lapilli tuff and tuff breccia) with abundant
dumortierite.
-Quartz-hematite stockworks in pervasively sericite altered rock
were mapped at several sites on Silica Ridge, including a 130 meter
wide zone on the northeast side.
-A zone
of hydrothermal breccia with alunite and hematite was mapped in a
mainly talus covered area on the west side of the ridge.
-Gusano
textures typically found at the base of lithocaps immediately above
porphyry-style alteration were noted in an outcrop southeast of
Silica Ridge and east of the Circle Trench zone. The outcrop
consists mainly of intensely sericite altered hydrothermal breccia
with a strongly pyritic matrix.
-Magnetite veins and breccias with strongly magnetite altered
clasts were mapped on the south side of the
ridge.
-Chalcopyrite bearing, magnetite rich feldspar porphyry dykes
were mapped at the highest point of Silica Ridge (2050 meters); two
grab samples from the dykes returned anomalous levels of copper
(428 and 530 parts per million).
-Magnetite/hematite veinlets with chalcopyrite were mapped in
feldspar and hornblende phyric volcanics at the north end of the
Gopher Zone. A grab sample returned 1395 ppm copper. Advanced
argillic assemblages with dickite and pyrophyllite were also
identified in this zone.
-Structural mapping carried out by Stephen Wetherup of Caracle
Creek International Consulting Inc. identified significant east and
northeast trending structures that provided the primary
hydrothermal fluid pathways influencing the development of strong
phyllic to advanced argillic alteration.
Following completion of
the mapping program, an induced polarization survey was completed
across Silica Ridge. The survey (two 2.2 kilometer lines) was
conducted by Peter Walcott and Associates and was designed to
extend the 2011 IP data to greater depths below the ridge. The 2013
survey confirmed the presence of a strong chargeability high to
depths of at least 500 meters below surface. The chargeability high
is open to the east and south.
Modeling of the Quest
Northwest airborne magnetic data confirmed that the south side of
Silica Ridge is underlain by an east trending magnetic high over
2.5 kilometers long. This feature correlates with outcrops of
monzonitic to dioritic intrusive rock and hornfelsed volcanics with
epidote, albite, actinolite and local biotite and K-feldspar
alteration and widespread magnetite veining. Copper mineralization
in outcrop generally correlates with magnetite destructive
alteration around this magnetic high.
The geological and
geophysical data generated by the 2013 program provide further
evidence for a large porphyry system centered on the Silica Ridge
lithocap. In addition to defining a number of strong coincident IP,
structural and alteration anomalies, the program extended the
overall size of the system, with advanced argillic alteration being
mapped 800 meters north and 2.2 kilometers east of the existing IP
grid. The chargeability high centered on Silica Ridge is open to
the east, south, and at depth.
The
Tanzilla program is being funded by Freeport, as part of an Earn-In
Agreement to explore West Cirque's Castle, Tanzilla and Pliny
properties in northwestern British Columbia. Freeport can earn an
initial 51% interest in the Properties by funding cumulative
expenditures of $8,000,000 over a four-year period.
Rock
samples were shipped to ALS Minerals' preparation lab in Terrace,
B.C. Samples were analyzed at ALS's ISO 9001:2008 certified North
Vancouver laboratory for gold by fire assay and ICP-AES, and for 35
elements including copper, molybdenum and silver by ICP-AES using
an aqua regia digestion. West Cirque's
disclosure of a technical or scientific nature in this news release
has been reviewed and approved by John Bradford, M.Sc., P.Geo. and
V.P. Exploration and Director for West Cirque
Resources, who serves as a Qualified Person under the definition of
National Instrument 43-101.
About
West Cirque Resources Ltd.
West Cirque is a
mineral exploration company focused on creating shareholder wealth
by identifying, acquiring and defining resources in world class
precious and base metal projects in the North American
Cordillera.
West
Cirque Resources Ltd.
Steve Vanry, CFA
President
(604) 558-4604
svanry@westcirqueresources.com
www.westcirqueresources.com
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This news release contains certain
"forward-looking statements", as defined in the United States
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Consequently, there can be no assurances that such statements will
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differ materially from those anticipated in such statements. The
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and "West Cirque's" plans and objectives to differ materially from
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