EXTORRE DRILLING AT UNION DOMES AND CERRO PUNTUDO PROJECTS

VANCOUVER, BC -- (Marketwire) -- 03/22/11 --

Vancouver, B.C., March 22, 2011 - Extorre Gold Mines Limited (AMEX: XG;
TSX:XG;
Frankfurt: E1R, OTC: EXGMF - 'Extorre' or the 'Company') is pleased to
announce
that drilling is underway at its Union Domes gold project and its Cerro
Puntudo
silver project in Santa Cruz Province, Argentina. Union Domes is located
18 km.
south of the Company's Cerro Moro discovery, whereas Cerro Puntudo is
located
220 km. west of Cerro Moro and immediately south of the Coeur
d'Alene
Mines/Mirasol Resources' Joaquin silver discovery.

Union Domes is a bulk tonnage gold-silver target related to a rhyolite
dome
complex. The Company has completed 8 diamond drill holes and expects to be
able
to report assays within 4 weeks. Drilling is continuing.

At Cerro Puntudo, the Company is operating one drill rig, with a second
rig due
to arrive shortly. The program will test structures that are
potential
extensions to the high grade silver system on the Joaquin property to the
north.
Potential extensions to both the La Marocha and the La Negra trends have
been
defined on the basis of exploration that included geological
mapping,
geochemistry and ground magnetics. Two holes have been completed to date.

Separately, effective March 19, 2011, Cerro Vanguardia ('CVSA') has
advised the
Company that it has elected not to exercise its back-in right on the
Cerro
Puntudo silver and other regional projects in Santa Cruz Province
that the
Company acquired from it. Extorre now owns 100% of the projects and CVSA
retains
only a 2% net smelter return.

About Extorre
Extorre is a Canadian public company that trades under the symbol 'XG' on
both
the Toronto Stock Exchange and the NYSE-Amex Exchange. Extorre's assets
comprise
approximately $36 million in cash, the Cerro Morro and Don Sixto deposits,
and a
suite of very prospective mineral exploration properties in Argentina.

On April 19, 2010, Extorre announced a National Instrument 43-101
compliant
mineral resource estimate for Cerro Moro:
Indicated Category: 357,000 oz. gold 15.3 million oz. silver (612,000 oz.
gold
equivalent*), plus Inferred Category: 190,000 oz. gold 12.0 million oz.
silver
(390,000 oz. gold equivalent*)

The 612,000 ounce gold equivalent* indicated resource, has an average
grade of
32.3 g/t gold equivalent*, a grade considered exceptional by industry
standards.
The silver contribution is high, accounting for approximately 50% of the
metal
value. Additional inferred resources of 390,000 ounces gold equivalent* are
also
reported from Cerro Moro.

On October 19, 2010 Extorre released the results of a preliminary
economic
assessment ('PEA') of the Cerro Moro Project. The PEA highlighted the
robust
economics of a future mine to produce an average of 133,500 gold
equivalent*
ounces annually during the first 5 years of operations. The cash cost per
ounce
(gold equivalent*) is estimated to be US$ 201 per ounce. Project CAPEX has
been
estimated at US$ 131 million. The project economics were calculated using
gold
and silver prices of US$ 950/ounce and US$ 16/ounce, respectively.

Extorre has 6 drills rigs operating, four on the Cerro Moro property and
two on
discovery drilling elsewhere in Santa Cruz Province.

*Gold equivalent grade is calculated by dividing the silver assay or
resource
by 60, adding it to the gold value and assuming 100% metallurgical
recovery.

You are invited to visit the Extorre web site at www.extorre.com.

EXTORRE GOLD MINES LIMITED

Eric Roth Suite 1660, 999 West
Hastings St.
President and CEO Vancouver, BC Canada V6C
2W2
extorre@extorre.com

Safe Harbour Statement - This news release contains 'forward-
looking
information' and 'forward-looking statements' (together, the 'forward-
looking
statements') within the meaning of applicable securities laws and the
United
States Private Securities Litigation Reform Act of 1995, including our
belief as
to the extent and timing of its drilling programs, various studies
including the
PFS, and the Environmental Impact Assessment, and exploration
results, the
potential tonnage, grades and content of deposits, timing,
establishment and
extent of resources estimates, potential production from and viability
of its
properties, production costs and permitting submission and timing.
These
forward-looking statements are made as of the date of this news release.
Readers
are cautioned not to place undue reliance on forward-looking
statements, as
there can be no assurance that the future circumstances, outcomes or
results
anticipated in or implied by such forward-looking statements will occur or
that
plans, intentions or expectations upon which the forward-looking
statements are
based will occur. While we have based these forward-looking statements
on our
expectations about future events as at the date that such statements
were
prepared, the statements are not a guarantee that such future events will
occur
and are subject to risks, uncertainties, assumptions and other factors
which
could cause events or outcomes to differ materially from those
expressed or
implied by such forward-looking statements. Such factors and
assumptions
include, among others, the effects of general economic conditions, the
price of
gold and silver, changing foreign exchange rates and actions by
government
authorities, uncertainties associated with legal proceedings and
negotiations
and misjudgments in the course of preparing forward-looking
information. In
addition, there are known and unknown risk factors which could cause our
actual
results, performance or achievements to differ materially from any
future
results, performance or achievements expressed or implied by the forward-
looking
statements. Known risk factors include risks associated with
project
development; the need for additional financing; operational risks
associated
with mining and mineral processing; fluctuations in metal prices; title
matters;
uncertainties and risks related to carrying on business in foreign
countries;
environmental liability claims and insurance; reliance on key
personnel; the
potential for conflicts of interest among certain of our officers,
directors or
promoters of with certain other projects; the absence of dividends;
currency
fluctuations; competition; dilution; the volatility of the our common
share
price and volume; tax consequences to U.S. investors; and other
risks and
uncertainties, including those relating to the Cerro Moro project and
general
risks associated with the mineral exploration and development industry
described
in our interim financial statements and MD&A for the fiscal period ended
March
31, 2010 filed with the Canadian Securities Administrators and
available at
www.sedar.com. Although we have attempted to identify important factors
that
could cause actual actions, events or results to differ materially from
those
described in forward-looking statements, there may be other factors that
cause
actions, events or results not to be as anticipated, estimated or
intended.
There can be no assurance that forward-looking statements will prove
to be
accurate, as actual results and future events could differ materially from
those
anticipated in such statements. Accordingly, readers should not place
undue
reliance on forward-looking statements. We are under no obligation to
update or
alter any forward-looking statements except as required under
applicable
securities laws.

Cautionary Note to United States Investors - The information contained
herein
and incorporated by reference herein has been prepared in accordance
with the
requirements of Canadian securities laws, which differ from the
requirements of
United States securities laws. In particular, the term 'resource'
does not
equate to the term 'reserve'. The Securities Exchange Commission's (the
'SEC')
disclosure standards normally do not permit the inclusion of
information
concerning 'measured mineral resources', 'indicated mineral
resources' or
'inferred mineral resources' or other descriptions of the
amount of
mineralization in mineral deposits that do not constitute 'reserves'
by SEC
standards, unless such information is required to be disclosed by the law
of the
Company's jurisdiction of incorporation or of a jurisdiction in
which its
securities are traded. U.S. investors should also understand that
'inferred
mineral resources' have a great amount of uncertainty as to their
existence and
great uncertainty as to their economic and legal feasibility.
Disclosure of
'contained ounces' is permitted disclosure under Canadian regulations;
however,
the SEC normally only permits issuers to report mineralization that
does not
constitute 'reserves' by SEC standards as in place tonnage and grade
without
reference to unit measures.
NEITHER THE TSX NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS
DEFINED IN
THE POLICIES OF THE TSX EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY
OR
ACCURACY OF THIS NEWS RELEASE

This announcement is distributed by Thomson Reuters on behalf of
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(i) the releases contained herein are protected by copyright and
other applicable laws; and
(ii) they are solely responsible for the content, accuracy and
originality of the information contained therein.

Source: Extorre Gold Mines Limited via Thomson Reuters ONE

[HUG#1498839]

For further information, please contact:

Rob Grey, VP Corporate Communications

Tel: 604.681.9512 Fax: 604.688.9532

Toll-free: 1.888.688.9512