You can view online version http://extorregoldmineslimited.cmail4.com/t/y/e/bilvl/uudljlhrj/ or unsubscribe http://extorregoldmineslimited.cmail4.com/t/y/u/bilvl/uudljlhrj/ from our list. Extorre updates exploration at Cerro Moro +100 drill holes completed on multiple mineralized zones Vancouver, B.C., June 21, 2010 – Extorre Gold Mines Limited (TSX :XG, Frankfurt: E1R, OTC: EXGMF – "Extorre" or the "Company") reports that 4 drill rigs are testing new veins and/or new drill targets, as part of a program designed to meet our goal of expanding the Cerro Moro resources to 2 million ounces.

Over 100 new drill holes have been drilled since the April 19, 2010 Resource Statement. A significant assay backlog is currently affecting progress, with some 4,000 sample results awaited.

Extorre will now build a dedicated on-site sample preparation facility, to be managed by an independent, accredited geochemical contractor.

This is expected to significantly shorten assay turnaround times. Fortunately many of the new exploration holes are able to be targeted and drilled on the basis of geological logging of drill core, utilizing quartz vein textures and the presence of the silver sulphide mineral acanthite as vectors to ore grade mineralization.

Acanthite is clearly evident in other veins at Cerro Moro and its presence justifies drilling of targets, ahead of confirmatory assays. The following new zones are being tested: A southeastern extension of Escondida mineralization, Escondida Far Southeast, appears to be hosted within an extensional "jog" along the main Escondida structure.

Two rigs are drill testing a one kilometre long target.

A 3rd rig is currently drilling a southeastern extension to the Gabriela vein.

The previously drilled northwestern part of the vein was reported as an "inferred resource" in the April resource statement.

To date the new zone has been traced by drilling over a strike length of 350 metres.

The Gabriela target remains open both along strike and down-dip.

A new vein, referred to as the Carolene vein, has been drill tested over 650 metres of strike length on the basis of visible encouragement.

The Carolene vein is located on the northern margin of the Escondida horst block, in a comparable geological setting to the Escondida vein structure.

The Carolene structure is regarded to be a key exploration target.

The previously known Carla vein has also been further drilled, as the target is known to be high grade and shallow, thus amenable to providing additional resources to Cerro Moro.

Additional drilling is planned. It is proposed that drilling with multiple rigs will be maintained for the foreseeable future through the mine permitting and development period for Cerro Moro.

Drill hole assay intercepts will be reported as soon as sufficient assays are accumulated to report the potential of new discoveries and their potential impact on the project economics. Exploration on other projects in Santa Cruz is now sufficiently advanced to enable drill testing.

The first prospect to be tested is referred to as the Falcon Project, an undrilled gold target known previously as Calandria.

Results should be reportable in Q3-2010. For location of new veins, please see attached
About Extorre Extorre is a Canadian public company listed on the Toronto Stock Exchange under the symbol "XG".

It is the spin-out entity from Exeter Resource Corporation ("XRC" on the TSX and "XRA" on the NYSE-Amex).

Extorres assets comprise approximately $20 million in cash, the Cerro Morro and Don Sixto projects and several other exploration properties in Santa Cruz. On April 19, 2010, Extorre announced an updated 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 over 40% of the metal value.

Additional inferred resources of 390,000 ounces gold equivalent* are also reported from Cerro Moro. The updated resource model for the Escondida vein has been delivered to Extorres consultants, Santiago-based NCL Ingenieria y Construccion, for mine design and ore scheduling. The results will be used in a Preliminary Economic Assessment (PEA) for the project which is scheduled to be complete in Q3 -2010.

The PEA will provide estimated mine operating and capital costs for a potential 100,000 ounce gold equivalent per annum mine.

The submission of an Environmental Impact Assessment to Provincial authorities for permitting is also scheduled for Q3 -2010. Matthew Williams, Extorres Exploration Manager considered a "qualified person" within the definition of that term in National Instrument 43-101, Standards of Disclosure for Mineral Projects, has supervised the preparation of the technical information contained in this news release. You are invited to visit the Extorre web site at www.extorre.com
*Gold equivalent grade is calculated by dividing the silver assay result by 60, adding it to the gold value and assuming 100 % recovery. ** Based on 590,000 tonnes at 18.9 g/t gold and 805 g/t silver, for a gold equivalent grade of 32.3 g/t. *** Based on 1,970,000 tonnes at 3.0 g/t gold and 190 g/t silver, for a gold equivalent grade of 6.1 g/t. EXTORRE GOLD MINES LIMITED Eric Roth President and CEO [mailto:] For further information, please contact: Rob Grey, VP Corporate Communications Tel: 604.681.9512 Fax: 604.688.9532 Toll-free: 1.888.688.9512 Suite 1260, 999 West Hastings St. Vancouver, BC Canada V6C 2W2 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, the Companys belief as to the extent and timing of its drilling programs, various studies including engineering, environmental, infrastructure and other studies, and exploration results, budgets for its exploration programs, the potential tonnage, grades and content of deposits, timing, establishment and extent of resources estimates, potential for financing its activities, potential production from and viability of its properties, permitting submission and timing and expected cash reserves.

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 the Company has based these forward-looking statements on its 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 the Companys 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 the ability to obtain any necessary approvals, waivers, consents and other requirements necessary or desirable to permit or facilitate the proposed Arrangement, the risk that any applicable conditions of the proposed transaction may not be satisfied, 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 officers, directors or promoters of the Company with certain other projects; the absence of dividends; currency fluctuations; competition; dilution; the volatility of the Companys 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 Extorres management discussion and analysis for the quarter ended March 31, 2010 filed with the Canadian Securities Administrators and available at www.sedar.com.

Although the Company has 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.

The Company is 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 Commissions (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 U.S., unless such information is required to be disclosed by the law of the Companys 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
Forward this email to a friend http://extorregoldmineslimited.forwardtomyfriend.com/y/uudljlhrj/6EF24B04/bilvl/l