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Re:   News - Thursday, December 20, 2012
      12-27 - Cornerstone Announces Exploration Results for the Ca�a
      Brava Property, Ecuador
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Mount Pearl, NL, Canada: Cornerstone Capital Resources Inc.
("Cornerstone") (TSXV-CGP) (F-GWN) (B-GWN) (OTC-CTNXF) announced today
results from prospecting and geological mapping surveys carried out on
its wholly owned Ca�a 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 (Ca�a 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 > 1 g/t Au, 36 samples > 0.5 g/t Au) and silver (13
samples > 100 g/t Ag, 35 samples > 30 g/t Ag)
.. Base metals and epithermal pathfinder elements are strongly anomalous
throughout the Ca�a Brava Breccia
.. Porphyry gold-copper target identified below the Ca�a Brava Breccia

Brooke Macdonald, President of Cornerstone, stated "Exploration results
to date on the Ca�a 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 Ca�a 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 Ca�a Brava property can be viewed at
http://cornerstoneresources.com/i/pdf/NR12-27CanaBrava.pdf.

Regional Geology and Mineralization

The Ca�a 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. Ca�a 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 Ca�a 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 Ca�a 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 Ca�a 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 Ca�a Brava property in 2007, but work was
suspended for a prolonged period resulting from the Mining Moratorium
enacted in April 2008. Immediately thereafter the Ca�a 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 Ca�a 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 Ca�a Brava property, hydrothermal breccia (Ca�a
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 Ca�a 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 Ca�a 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 Ca�a Brava Breccia and the East Zone.

Results and Discussion

During the prospecting and geological mapping programs at the Ca�a
Brava property, Cornerstone collected a total of 334 representative
rock chip samples with 18 returning > 1 g/t Au, 36 returning > 0.5 g/t
Au and 66 returning > 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 > 100
g/t Ag, 35 samples assayed > 30 g/t Ag and 59 samples assayed > 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 Ca�a 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 Ca�a 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 Ca�a
Brava property extending over 2.5 km by up to 2.0 km on the Ca�a 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.

Further information is available on Cornerstone's website:
www.cornerstoneresources.com  or for investor, corporate or media
inquiries, please contact:

Investor Relations:
Email: ir@cornerstoneresources.ca
North America toll-free: 1 (877) 277-8377

The link to a recent Corporate presentation is:
http://www.cornerstoneresources.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.

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Copyright (c) 2012 CORNERSTONE CAPITAL RESOURCES INC. (CGP)  All rights
reserved.  For more information visit our website at
http://www.cornerstoneresources.com/ or send
mailto:info@cornerstoneresources.com
Message sent on Thu Dec 20, 2012 at 7:00:00 AM Pacific Time


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