Cornerstone Announces Exploration Results for the Cana Brava

Cornerstone Announces Exploration Results for the Cana Brava
Property, Ecuador 
MOUNT PEARL, NEWFOUNDLAND -- (Marketwire) -- 12/20/12 -- Cornerstone
Capital Resources Inc. ("Cornerstone") (TSX VENTURE:CGP)
(FRANKFURT:GWN) (BERLIN:GWN) (OTCBB:CTNXF) announced today results
from prospecting and geological mapping surveys carried out on its
wholly owned Cana Brava property located in south-central Ecuador. 
Highlights: 


 
--  Two large high sulphidation (HS) epithermal gold-silver zones defined by
    extensive hydrothermal breccia and silicic ribs developed within an
    advanced argillic alteration lithocap 
--  West Zone (Cana Brava Breccia) is developed over a 2.5 km by up to 2 km
    area and is coincident with a 3 km by 1 km multi-element soil
    geochemistry anomaly 
--  East Zone shows a similar HS system measuring 1.75 km by 1 km which is
    open in most directions 
--  334 rock samples collected with multiple samples returning anomalous
    gold (18 samples greater than 1 g/t Au, 36 samples greater than 0.5
    g/t Au) and silver (13 samples greater than 100 g/t Ag, 35 samples
   greater than 30 g/t Ag) 
--  Base metals and epithermal pathfinder elements are strongly anomalous
    throughout the Cana Brava Breccia 
--  Porphyry gold-copper target identified below the Cana Brava Breccia

 
Brooke Macdonald, President of Cornerstone, stated "Exploration
results to date on the Cana Brava property show good potential for
significant epithermal gold and silver mineralization with strong
indications of porphyry style mineralization at relatively shallow
depths. Currently we are seeking a partner to help fund additional
exploration surveys in order to develop drill targets. It is
noteworthy that despite the excellent potential, no drilling has ever
been carried out on the property". 
The 1,150 hectare Cana Brava property is located near the community
of Gualel in the province of Loja, 100 km south southwest of the city
of Cuenca. The project area is situated in the Ecuadorian Andes on
the east side of the Cordillera Occidental at elevations ranging from
2,950 m to 3,650 m above sea level. Access from Cuenca is provided by
paved roads and a secondary gravel road to Gualel, from which trails
provide access to the property. Maps showing the location, geology
and exploration results for the Cana Brava property can be viewed at
http://cornerstoneresources.com/i/pdf/NR12-27CanaBrava.pdf. 
Regional Geology and Mineralization 
The Cana Brava property is underlain by Tertiary age sequences of
mafic and felsic volcanic flows, tuffs and sediments which are
intruded by granodiorite and diorite batholiths and stocks.
Structurally the area is bounded by two major north-northeast
trending regional faults, the Giron Fault which cuts directly through
the property, and the Catamayo Fault located approximately 15 km to
the east. Cross cutting transverse faults developed within this
north-northeast structural trend commonly control the emplacement of
intrusions and development of associated porphyry and epithermal
alteration and mineralization. Cana Brava is located in the
southwestern part of a northwest oriented belt of epithermal precious
metal prospects and deposits.  
Property History 
Between 1995 and 2000, the British Geological Survey and the
Government of Ecuador carried out regional-scale surveys in the Cana
Brava area which included an airborne magnetic survey, geological
mapping, and rock and stream sediment sampling. The regional airborne
magnetic survey (1 km line spacing) outlined a series of structures
and large scale geological features including a 5 km-wide
east-northeast trending magnetic low which passes directly through
the Cana Brava property. This magnetic low may be due to magnetite
destruction associated with hydrothermal alteration along a
coincident structure. The Giron Fault is not evident in the magnetic
data, however a mapped regional east-northeast trending fault lies on
the north side of this magnetic low. Lineaments related to major
structures and twin concentric rings/faults that may represent
caldera structures are evident from regional topographic maps, and
this is supported by regional volcanogenic studies. 
Industry exploration work on the property was first reported in the
early 1990's and consisted of satellite imagery analysis to define
exploration targets for field follow-up. During 1994, Rio Tinto Zinc
Corporation explored for epithermal gold and porphyry copper deposits
and carried out a stream sediment geochemistry survey. Iamgold
Corporation carried out regional exploration throughout the district
in 2000 and the western part of the Cana Brava property was covered
by a soil geochemistry survey (100 m spaced samples on 100-200 m
spaced grid lines) as part of this program. They reported anomalous
copper, molybdenum and gold coincident with epithermal alteration. 
Cornerstone Exploration Program 
Cornerstone acquired the Cana Brava property in 2007, but work was
suspended for a prolonged period resulting from the Mining Moratorium
enacted in April 2008. Immediately thereafter the Cana Brava mining
title was erroneously revoked by the Ecuadorian Government, however
this decision was appealed and the mineral rights were restored in
November 2012 (see November 14th news release). 
Exploration work on the Cana Brava property prior to the Mining
Moratorium has consisted of data compilation, reconnaissance
geological mapping, prospecting and rock sampling. 
Geology and Mineralization 
On the west side of the Cana Brava property, hydrothermal breccia
(Cana Brava Breccia) outcrops over a large area measuring 1 km by 0.5
km. These breccias are interpreted to represent the uppermost part of
a mineralized porphyry system. Goethite and hematite are extensively
developed as disseminations and stockwork veins within the breccias
which are often silicified with fine quartz veinlet networks and
granular silica. Vuggy silica occurs in breccia clasts and structural
zones. Clasts and blocks of dacite quartz feldspar porphyry are
common. 
Silicic ribs are characteristic of the Cana Brava property and are
generally 1-2 m wide, but 10-20 m widths are recorded. They are
extensively developed on the west side of the property over an area
measuring 2.5 km by 2 km centered on the Cana Brava Breccia. The ribs
often display a breccia texture with angular clasts of silicified
quartz feldspar porphyry and iron oxide stockwork. They have a
pronounced northeast trend sub-parallel to the two main regional
faults. 
Alteration typical of porphyry and high sulphidation epithermal
systems, including advanced argillic, argillic and propylitic
alteration, accompany mineralized hydrothermal breccia and silicic
ribs at both the Cana Brava Breccia and the East Zone. 
Results and Discussion 
During the prospecting and geological mapping programs at the Cana
Brava property, Cornerstone collected a total of 334 representative
rock chip samples with 18 returning greater than 1 g/t Au, 36
returning greater than 0.5 g/t Au and 66 returning greater than 0.2
g/t Au. One sample assayed 64.5 g/t gold with high silver value (42.5
g/t Ag). In addition, 13 samples assayed greater than 100 g/t Ag, 35
samples assayed greater than 30 g/t Ag and 59 samples assayed greater
than 10 g/t Ag. There is strong correlation between gold and silver
assay results and base metal and epithermal pathfinder element values
are strongly anomalous throughout the Cana Brava Breccia area to the
west. 
Historical soil sampling surveys show a 3 km by 1 km multi-element
(Au-Ag-As-Sb-Hg-Cu-Mo) anomaly associated with the Cana Brava
lithocap, and Cornerstone's rock sampling program has confirmed
gold-silver-copper mineralized zones associated with hydrothermal
breccia and silicic ribs. Furthermore, recent work has provided a
much better understanding of the nature and controls of alteration
and mineralization. 
Two mineralized HS epithermal zones have been identified on the Cana
Brava property extending over 2.5 km by up to 2.0 km on the Cana
Brava Breccia and 1.75 km by 1 km on the East Zone. Economic grade
gold and silver assay results from samples collected from outcrop
throughout the altered and mineralized zones strongly suggest
potential for precious metal epithermal deposits as well as
copper-gold porphyry deposits at depth. The East Zone is exposed as
intermittent outcrop over an area of 1.7 km by 1 km and is defined by
silicic ribs and hydrothermal breccia possibly related to another
porphyry system centered on the Fierro Urco lithocap located 2.5 km
northeast of the property. The silicic ribs and breccia are
associated with advanced argillic alteration and are strongly
anomalous in precious and base metals, as well as epithermal
pathfinder elements. 
Qualified Person 
Yvan Crepeau, M.Ba., P.Geo, President Cornerstone Ecuador SA and a
qualified person in accordance with National Instrument 43-101, is
responsible for supervising the exploration program and has reviewed
and approved the technical information contained in this news
release. 
Assaying  
All samples were delivered by Cornerstone employees for preparation
at Acme Analytical Laboratories (ACME) facility in Cuenca. Rock
samples are prepared by crushing 1 kg to 80% passing 2 mm (10 mesh),
splitting 250 g and pulverizing to 85% passing 0.06 mm (150 mesh)
(ACME code R150). Prepared samples are then shipped to ACME in
Vancouver, Canada where samples are assayed for a multi-element suite
(ACME code 1F-MS, 15 g split, Aqua Regia digestion, ICP-MS finish).  
Quality Assurance / Quality Control (QA/QC) 
The ACME preparation facility in Cuenca was audited by Cornerstone.
ACME is an ISO 9001:2008 qualified assayer that performs and makes
available internal assaying controls. Certified blanks and standards
are systematically used as part of Cornerstone's QA/QC program.
Rejects and 100 g pulps for each rock sample are stored in Cuenca for
future use and controls. 
About Cornerstone 
Cornerstone Capital Resources Inc. is a mineral exploration company
based in Mount Pearl, Newfoundland and Labrador, Canada, with a
diversified portfolio of projects in Canada, Ecuador and Chile, and a
strong technical team that has proven its ability to identify,
acquire and advance properties of merit. The company's business model
is based on generating exploration projects whose subsequent
development is funded primarily through joint venture partnerships.
Commitments from JV partners constitute significant validation of the
strength of Cornerstone's projects. 
The link to a recent Corporate presentation is: http://www.cornerston
eresources.com/i/pdf/Presentations_0912_CRICorporate.pdf 
Investors can also access Cornerstone on Twitter 
Cautionary Notice 
This news release may contain 'Forward-Looking Statements' that
involve risks and uncertainties, such as statements of Cornerstone's
plans, objectives, strategies, intentions and expectations. The words
"potential," "anticipate," "forecast," "believe," "estimate,"
"expect," "may," "project," "plan," and similar expressions are
intended to be among the statements that identify 'Forward-Looking
Statements.' Although Cornerstone believes that its expectations
reflected in these 'Forward-Looking Statements' are reasonable, such
statements may involve unknown risks, uncertainties and other factors
disclosed in our regulatory filings, viewed on the SEDAR website at
www.sedar.com. For us, uncertainties arise from the behaviour of
financial and metals markets, predicting natural geological phenomena
and from numerous other matters of national, regional, and global
scale, including those of an environmental, climatic, natural,
political, economic, business, competitive, or regulatory nature.
These uncertainties may cause our actual future results to be
materially different than those expressed in our Forward-Looking
Statements. Although Cornerstone believes the facts and information
contained in this news release to be as correct and current as
possible, Cornerstone does not warrant or make any representation as
to the accuracy, validity or completeness of any facts or information
contained herein and these statements should not be relied upon as
representing its views subsequent to the date of this news release.
While Cornerstone anticipates that subsequent events may cause its
views to change, it expressly disclaims any obligation to update the
Forward-Looking Statements contained herein except where outcomes
have varied materially from the original statements.  
On Behalf of the Board,  
Brooke Macdonald,President and CEO 
Further information is available on the Cornerstone Web site at
www.cornerstoneresources.com; via e-mail at
communications@crigold.com; or toll free at 1-877-277-8377.  
Neither TSX Venture Exchange nor its Regulation Services Provider (as
that term is defined in the policies of the TSX Venture Exchange)
accepts responsibility for the adequacy or accuracy of this release. 
Contacts:
Cornerstone Capital Resources Inc.
Investor Relations:
North America toll-free: 1 (877) 277-8377
ir@cornerstoneresources.ca
www.cornerstoneresources.com
 
 
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