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Re:   News - Thursday, September 27, 2012
      12-20 - Cornerstone announces Phase 3 drilling program at the
      Gama prospect, Ecuador
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Mount Pearl, NL, Canada: Cornerstone Capital Resources Inc.
("Cornerstone") (TSXV-CGP) (F-GWN) (B-GWN) (OTC-CTNXF) today announced
that a 2,500 metre (m) Phase 3 drilling program has been approved by
its joint venture partner, Intrepid Mines Limited ("Intrepid"), to test
the large Satoshuaycu porphyry copper-gold target at the Gama prospect,
part of the Shyri property located in Azuay province in southern
Ecuador. Intrepid is funding 100% of the current program, after
completion of which it will have earned its initial 60% interest in the
property (see "Shyri Option Agreement" below).

Highlights:

.. Large (4 km x 1 km) porphyry copper-gold target defined at
Satoshuaycu
.. Coincident copper-gold-molybdenum in-soil anomaly, induced
polarization (IP) chargeability and magnetic anomalies to be tested by
a 2,500 m Diamond drilling program
.. Diamond drill rig being mobilized to site
.. Ongoing exploration program to define new targets for drill testing

Brooke Macdonald, Cornerstone's President and CEO said "We have
developed an exciting porphyry target at Satoshuaycu through very
systematic exploration work and we are all anxious to start the
drilling program. Surface exploration programs are ongoing with the
objective to develop new targets for drill-testing in the near future."

Shyri property

Since acquiring the Shyri property in 2005, Cornerstone and its
partners have successfully identified highly prospective areas through
systematic and detailed exploration programs. So far four prospects
have been identified - Gama, Vetas Grandes, Ca�aribamba and Yanasacha.
Most of the exploration work prior to the April 2008 Mining Moratorium
focused on the specific prospect areas. Surface exploration results on
these prospects were previously reported. Two drilling programs were
carried out at Gama in 2011 with results reported in May 2011, August
2011 and February 2012.

Gama prospect

The Gama prospect is underlain by Oligocene to Miocene age andesitic to
dacitic ash flow tuffs of the Saraguro Group, including flow banded
dacite lava flows in the upper part of the group (Plancharumi
Formation) which in turn is unconformably overlain by the Jubones
Formation, a major rhyolitic ash flow tuff unit, the product of major
caldera-type eruption and ash flows. These units generally dip gently
(10� to 30�) to the south and southeast throughout the area and are
intruded by quartz-porphyritic rhyolites, porphyritic microdiorite,
diorite, quartz diorite and tonalite.

The Gama prospect comprises an extensive zone of high sulphidation (HS)
epithermal alteration measuring at least 8 km by 3 km. The northwestern
part of this alteration zone is eroded. The alteration is strongly
zoned and centered over three high-level, porphyry-type intrusions at
the 3,000 m to 3,800 m elevation. Potassic alteration is associated
with the porphyries at lower elevation. The advanced argillic
alteration is interpreted as lithocap to the porphyries.

Gama is located 15 km to the west of the Quimsacocha HS epithermal gold
deposit, 15 km to the south of International Minerals' Rio Blanco Low
Sulphidation (LS) gold-silver deposit and 10 km to the southeast of the
Chaucha porphyry copper-molybdenum deposit.

Two drilling programs totaling 4,279 m were completed during 2011.
Drilling results and interpretation were provided in Cornerstone News
Releases 11-17, 11-26 and 12-03.

Since the completion of Phase 2 drilling at Gama, a 731 line km
detailed ground magnetic survey was completed and an 80 line km Induced
Polarization (IP) geophysical survey was initiated in July to better
define drill targets. So far 53 line km of IP have been completed and
the survey is ongoing. A total of 62 rock and 2,381 soil samples were
collected and prospecting work was carried out on geochemical, magnetic
and IP anomalies. Geophysical surveys were interpreted and all datasets
were integrated to define drill targets. A series of maps showing the
exploration results and location of targets and drill holes are
provided here: http://cornerstoneresources.com/i/pdf/NR12-20DDH.pdf.

Satoshuaycu target

The Satoshuaycu target lies 2 km to the west of the Boqueron target
that was tested during Phase 1 and 2 drilling in 2011. At this location
the volcaniclastic rocks have been intruded by a north-south trending,
diorite to quartz diorite stock that was mapped over a distance of more
than 3.5 km. These intrusions at Satoshuaycu are exposed at a lower
level (<3,000 m elevation in the north to 3,400 m elevation in the
south) than at Boqueron (3,500 to 3,750 m elevation). The area lies
within a magnetic high dissected by NW and E-W trending interpreted
structures. The integration of the 2007 and 2012 IP data shows
extensive N-S elongated chargeability anomalies over a 3.5 km distance
and roughly located on the western flank of the intrusive stock in the
south and on the eastern flank in the northern part of the target area.
A series of gold, silver and base metal rich quartz veins (Antena
veins) is present in the NW part of Satoshuaycu. These narrow veins
(0.2 to 0.8 m wide) are interpreted as deep epithermal -- mesothermal
veins peripheral to the porphyry system and are not considered as a
priority area.

The northern part of the Satoshuaycu intrusive is associated with local
potassic alteration and quartz-pyrite-magnetite-potassic feldspar
stockworks and veins. It is low in sulphide content and high in
disseminated and stockwork magnetite veinlets (5% magnetite). The
density of stockwork veining is variable but increases at lower
elevation. These stockworks are the strongest yet seen at Gama. The
pyrite to chalcopyrite ratio decreases from south to north,
demonstrating a typical transition from distal to more proximal
position within the porphyry environment. Where present, chalcopyrite
is mostly disseminated.

A 250 m thick advanced argillic alteration zone is broadly parallel to
the stratigraphy and pinches out away from the porphyries. There is
evidence that the lower parts of the lithocap are pyrophillite-rich and
that they are locally superimposed onto phyllic alteration. Massive
silicification and brecciation increase towards the lower and central
parts of the advanced argillic zone.

Like Boqueron, there is a N-S oriented corridor of gold (weaker) and
copper (notably stronger) in-soil anomalies. The strongest copper
anomaly (200-600 ppm Cu) is located in the northern part of the quartz
diorite intrusion, at 3,100 to 3,300 m elevation.

Detailed soil sampling at Satoshuaycu indicates a large, coincident,
Cu-Au-Mo anomaly (Cu > 50 ppm, 3 km by 200 to 500m; Au >30 ppb,
discontinuous over 3.0 km; Mo >4 ppm, irregular shape, 3 km by 1.0 to
1.5 km). These soil geochemical anomalies are roughly coincident with
IP chargeability anomalies detected over a 3.5 km N-S distance.

Five (5) Diamond drill holes are planned to test the Satoshuaycu target
along a 1.2 km distance in the N-S direction. Currently a drill rig is
being mobilized to the project and drilling is expected to start before
the end of September.

.. Three (3) drill holes totalling 1,500 m will test the central, higher
elevation part of the target area showing a transition from potassic to
advanced argillic alteration at surface, locally coincident > 100 ppm
Cu and > 30 ppb Au in-soil anomaly and strong IP chargeability anomaly.
.. One (1) drill hole (500 m) will test an IP chargeability target
located on the western flank of the intrusive stock showing argillic
alteration at surface.
.. One hole (500 m) will test the northern, lower part (3,100 m
elevation) of the target area, showing potassic alteration,
quartz-magnetite veining, disseminated chalcopyrite and a
coincident/continuous > 200 ppm Cu in-soil anomaly measuring 600 m x
100 m.

Machay and Pimo targets

The Machay and Pimo target areas are preliminarily defined by moderate
to strong gold-copper-molybdenum in-soil geochemical anomalies. The
ongoing IP survey will cover these areas to further evaluate their
potential.

The Machay target is located 1.0 km the west of the Satoshuaycu target.
At this location, the soil geochemical survey defined a 500 m by 500 m,
coincident gold (>30 ppb Au), copper (>50 ppm Cu) and molybdenum (> 3
ppm Mo) anomaly. The area is underlain by the Saraguro volcaniclastic
units intruded by a small diorite plug. Advance argillic alteration is
present over most of the area and at the same elevation as on the
remainder of the property. It is postulated that the diorite intrusive
mapped on this target could possibly form part of the Satoshuaycu
intrusive at depth.

The Pimo target is underlain by rhyolitic tuffs of the Jubones
Formation, showing silicic alteration in the western part. Very few
outcrops are present in the eastern part of this E-W elongated, 3.5 km
by 1.0 km, strong multi-element in-soil geochemical anomaly (Au > 30
ppb, Cu > 50 ppm, Ag > 200 ppb, Pb > 40 ppm, Zn > 100 ppm, As > 50 ppm,
Sb > 10 ppm and Hg > 200 ppb). Glacial dispersion may have affected the
eastern part of the target area.

Vetas Grandes prospect

This prospect comprises multiple, ENE trending LS to Intermediate
Sulphidation (IS) epithermal quartz veins within a zone at least 2 km
long and 1.5 km wide. The geology is similar to the nearby Rio Blanco
gold-silver deposit. Veins are exposed over a vertical relief of 300 m
and show a range of gold values and geochemical signatures. Bonanza
grade material, with channel samples returning 53.4 g/t Au and 641 g/t
Ag over 3.4 m, appears to be localized at vein intersections and where
veins outcrop around the 3,220 m elevation.  At this level there is
evidence of boiling accompanied by the highest gold values in surface
samples. The prospect and exploration results are described in
Cornerstone News Releases 06-06, 06-19, 06-25 and 07-04. The Vetas
Grandes prospect has been thoroughly explored and is now at the
drill-ready stage.

An Environmental Impact Study (EIS) for advanced exploration (drilling)
has been completed for Vetas Grandes and submitted to the Ministry of
Environment for review. Approval has been delayed by community
consultations, and is now expected in the fourth quarter of 2012.

Ca�aribamba prospect

The Ca�aribamba prospect represents an IS, disseminated and vein-type
gold-silver epithermal system hosted in a diatreme complex.
Geologically it appears to be analogous to large, diatreme-hosted gold
deposits in Rosia Montana, Romania and Kelian, Indonesia. The area has
a history of artisanal mining of high-grade veins over at least 300 m
of elevation and in the 1970's four short drill holes were completed on
one of the four recognized vein systems. Work by Cornerstone expanded
known mineralization another 500 m north with the discovery of the
Guabisay structure where a 4.5 m channel sample within a
fault-controlled breccia zone returned 32.2 g/t  Au.  Cornerstone also
completed extensive geological, geochemical and geophysical (IP and
magnetic) surveys in the area and outlined several high priority
targets unrelated to the known mineralized zones.

This prospect is located only 5 km southeast of Vetas Grandes and is at
the same drill-ready and permitting stages. The EIS work for advanced
exploration stage (drilling) was carried out but the consultation
process has not yet been completed. Approval is currently expected in
the first quarter of 2013.

Qualified Person

Yvan Crepeau, M.Ba., P.Geo, President of Cornerstone Ecuador SA and a
qualified person in accordance with National Instrument 43-101, is
responsible for supervising the Shyri exploration program and has
reviewed and approved the technical information contained in this news
release.

Shyri Option Agreement

Intrepid Mines Limited ("Intrepid") is earning a 60% interest in the
Shyri gold-silver-copper property under an option agreement signed with
Cornerstone in January 2011. Under the terms of the Agreement, Intrepid
has the ability to earn an initial 60% interest in the property by
spending $US 6.0 million dollars over 5 years. Intrepid may earn an
additional 20% in specific project areas up to 5,000 hectares each.
Upon designation of a Project Area, Intrepid will make a $US 750,000
private placement in Cornerstone. To earn the additional interest,
Intrepid will complete a bankable feasibility study or incur
expenditures of $US 20 million, whichever comes first, and make a cash
payment to Cornerstone of up to $US 5.0 million based on the gold
equivalent ounces in the mineral reserve. There is no limit to the
number of Project Areas Intrepid may designate within the property and
each 'stand-alone' Project Area requires the same earn-in requirements
(see news release dated Oct 29, 2009). Cornerstone is the project
operator, and manages the exploration programs in close consultation
and planning with Intrepid.

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 Sep 27, 2012 at 5:15:00 AM Pacific Time
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