Rodinia Minerals Inc. Welcomes Farhad Abasov to the Board as Executive Chairman

TORONTO, ONTARIO--(Marketwire - April 28, 2010) - Rodinia Minerals Inc. ("Rodinia" or the "Company") (TSX VENTURE:RM)(OTCQX:RDNAF) is pleased to announce the appointment of Mr. Farhad Abasov to the Board of Directors ("Board"), and to the role of Executive Chairman. Mr. Abasov will replace Mr. Stan Bharti who will continue to serve on the Board as Executive Vice-Chair. Messrs. Abasov and Bharti will be instrumental in providing guidance to Rodinia on financial, transactional, and other strategic growth initiatives as the Company continues its quest to become a high-grade, low-cost producer of lithium carbonate from lithium-brine projects in North and South America. The Company welcomes Mr. Abasov to the Board and looks forward to working with Messrs. Abasov and Bharti as the Company's strategic focus is realized.

Mr. Abasov currently serves as the President and CEO of Allana Potash Corp. Mr. Abasov has previously held various senior executive and director positions with leading domestic and international resource, energy and finance companies. Before Allana Potash, Mr. Abasov served as Senior Vice President at Potash One. Prior to that Mr. Abasov was Vice President, Portfolio Management and Vertical Integration for Uranium One, managing Uranium One's large asset base in the United States. He was a member of Energy Metals Corporation's senior management team, a premier uranium company sold to Uranium One for $1.8 billion in 2007. Mr. Abasov holds an MBA in Business and Finance from the International University of Japan, a leading Japanese business school.

David Stein, Rodinia's President and CEO, remarked "We are pleased to welcome Farhad to the Rodinia team. Over the past several years he has been involved with a number of very successful mining and mineral development ventures, and we expect his guidance will immediately add value. In addition, Farhad's expertise in the potash business will be extremely useful as we develop our lithium brine projects, where we expect that potash will be a substantial economic by-product of the extraction process."

In conjunction with his appointment, Rodinia has granted Mr. Abasov 200,000 stock options pursuant to the stock option plan of the Company. The options will be exercisable for $0.47 and will expire on April 28, 2015. Such options shall vest immediately subject to the applicable regulatory hold period. The grant of options remains subject to receipt of all required regulatory approvals.

In addition, the Company is pleased to announce that Mr. Mark Eaton has been appointed Chair of the Audit Committee of the Board. Mr. Eaton replaces Mr. Bruce Ford who will resign as a director of the Company effective May 1, 2010 to pursue other business interests. The Company would like to thank Mr. Ford for his contributions to the Company.

About Rodinia Minerals Inc.:

Rodinia Minerals Inc. is a Canadian mineral exploration company with a primary focus on lithium exploration and development in North and South America. The Company is positioned to capitalize on the expected increase in demand for lithium carbonate that is projected to result from the anticipated paradigm shift to mass adoption and use of key lithium applications like lithium-ion batteries as well as glass ceramics, greases, pharmaceuticals etc.

Rodinia is currently exploring its Clayton Valley project in Nevada, USA, which surrounds the only lithium-brine producer in North America, and its Diablillos project in Salta, Argentina.

Cautionary Notes

Except for statements of historical fact contained herein, the information in this press release constitutes "forward-looking information" within the meaning of Canadian securities law. Such forward-looking information may be identified by words such as "plans", "proposes", "estimates", "intends", "expects", "believes", "may", "will" and include without limitation, statements regarding the impact of the board appointments on Rodinia; the potential of the Company's projects; timetable for further exploration, analysis and development; and governmental approvals and regulation. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from such statements. Factors that could cause actual results to differ materially include, among others, metal prices, competition, financing risks, acquisition risks, risks inherent in the mining industry, and regulatory risks. Most of these factors are outside the control of the Company. Investors are cautioned not to put undue reliance on forward-looking information. Except as otherwise required by applicable securities statutes or regulation, the Company expressly disclaims any intent or obligation to update publicly forward-looking information, whether as a result of new information, future events or otherwise.

NEITHER THE 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.

For more information, please contact
Rodinia Minerals Inc.
David Stein
President & CEO
+1 (416) 861-5812
+1 (416) 861.8165 (FAX)
dstein@forbesmanhattan.com
or
Rodinia Minerals Inc.
Aaron Wolfe
Vice President, Corporate Development
+1 (416) 309-2696
awolfe@forbesmanhattan.com
www.rodiniaminerals.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Golden Minerals Initiates Feasibility Study at El Quevar

GOLDEN, CO--(Marketwire - April 29, 2010) - Golden Minerals Company ("Golden Minerals" or the "Company") (NYSE Amex: AUMN) (TSX: AUM) is pleased to announce the initiation of a feasibility study for the El Quevar project, located in Salta Province in northwestern, Argentina.

Portal site excavation and pad preparation have been completed for the underground decline. Mining equipment has been ordered, including a single boom jumbo drill and five yard scooptram, with deliveries expected in May. Driving of the 4 meter by 4.5 meter decline is expected to start by the end of May. The decline and underground drifting will provide information that will be used to verify the mine model, confirm the mine plan, and provide bulk samples for additional metallurgical testing.

The Company has engaged the services of Micon International Limited (Micon) to conduct the feasibility study for the El Quevar project. Micon is recognized as an international leader in preparing feasibility studies and developing technical reports for mineral development projects. In addition to the feasibility study, Micon will also be providing an updated resource estimate for the project.

Metallurgical studies in support of the feasibility study are ongoing. An Environmental Impact Assessment is also underway, with environmental baseline studies nearing completion by Vector Engineering. Vector Engineering is a civil, geotechnical and environmental engineering firm specializing in design, construction engineering and environmental management for mining projects worldwide.

The Company expects to provide an updated resource estimate for the El Quevar project during the third quarter of this year. The feasibility study is scheduled to be completed by the end of 2010.

Golden Minerals' exploration activities and the majority of drilling to date have been concentrated on the Yaxtché target, which is one of 13 targets on the approximately 66,000 hectare El Quevar concessions. The Company owns or controls a 100% interest in the El Quevar project area. The Yaxtché target is an east-west trending, northerly dipping zone of mineralization hosted in volcanic and intrusive rocks of Tertiary age. More than 41,000 meters in 201 holes have been drilled to date. Recent drilling has demonstrated that the Yaxtché structure extends beneath a post mineral cover for a total strike length in excess of 2.3 kilometers. The structure remains open along strike and both up and down dip. In-fill drilling on the west extension of the Yaxtché structure is currently underway.

About Golden Minerals

Golden Minerals is a Delaware corporation based in Golden, Colorado, primarily engaged in the advancement of its pipeline of exploration projects in Latin America and in managing the San Cristobal mine in Bolivia. The Company has a portfolio of 30 exploration projects, including the feasibility stage El Quevar project in the Salta Province of northwestern Argentina, and advanced stage drilling projects in Mexico and Peru. The Company's experienced management team has proven in-house ability to explore, develop and operate mining projects.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act, including statements regarding the anticipated delivery dates of mining equipment at El Quevar, anticipated commencement dates of underground drift construction at El Quevar, planned use of information developed from the decline and underground drifting, preparation of a feasibility study and updated resource estimate for El Quevar by Micon, timing of completion of the feasibility study and updated resource estimate, existence of 13 targets on the El Quevar property, exploration results and programs at El Quevar, the westward extension, continuity and strike length of the El Quevar Yaxtché structure, planned exploration activities, and planned feasibility work. These statements are subject to risks and uncertainties, including results of exploration; whether exploration results will support engineering and other feasibility work on El Quevar; changes in geological interpretations, including the interpretations regarding the westward extension, continuity and strike length of the Yaxtché structure, including changes resulting from additional drilling, exploration or feasibility work; whether exploration results will be indicative of future exploration results; delays in El Quevar equipment deliveries, commencement of underground drift construction, feasibility study completion and resource estimate update or development of information that does not support a feasibility study or resource update; uncertainties regarding whether any portion of the El Quevar deposit will be converted to reserves; whether the El Quevar feasibility study will result in a positive determination of feasibility; whether the results of additional exploration or feasibility work, including feasibility work at El Quevar on processing alternatives and projected recovery rates, will be positive; uncertainties regarding whether project feasibility will be supported; financial market conditions; unexpected increases in costs of materials and supplies used in exploration activities; fluctuations in silver and other metal prices; technical and permitting issues; and the ability and success of the Company in raising adequate capital and implementing its plans. Golden Minerals Company assumes no obligation to update this information. Additional risks relating to Golden Minerals Company may be found in the periodic and current reports filed with the Securities Exchange Commission by Golden Minerals Company, including the Annual Report on Form 10-K for the year ended December 31, 2009.

For additional information please visit http://www.goldenminerals.com/ or contact:
Golden Minerals Company
Jerry W. Danni
(303) 839-5060
Sr. Vice President, Corporate Affairs

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Hunt Mining Corp.: Appointment of Matthew J. Hughes as Chief Executive Officer

LIBERTY LAKE, WASHINGTON--(Marketwire - April 27, 2010) - Hunt Mining Corp. (the "Corporation") (TSX VENTURE:HMX), is pleased to announce the following executive appointments.

By action of the Corporation's board of directors effective April 26th, 2010, Mr. Matthew J. Hughes has been appointed to the position of Chief Executive Officer, replacing Mr. Tim Hunt in this capacity. Mr. Hughes will continue to hold the position of president of the Corporation in addition to this new title. Mr. Hughes has a successful history of discovery, exploration and project development in the Santa Cruz Province of Argentina, which includes the discovery of the Mina Martha Silver Mine currently operated by Coeur D'Alene Mines Corp.

With over 15 years experience in Santa Cruz Province, Mr. Hughes will continue to prioritize the exploration and resource development programs for Hunt Mining Corp. Currently, the Corporation controls over 2,500 square kilometers of exploration and mining concessions in Santa Cruz, all lying within acceptable mining jurisdictions as defined by the provincial government in Argentina. The Corporation has also completed its baseline environmental study at La Josefina, as recommended by Mr. Hughes through his experience in helping bring the Mina Martha deposit into production.

Mr. Tim Hunt has been appointed Executive Chairman, and will be actively involved in the continued development of the Corporation. Through his leadership and guidance, Hunt Mining has established itself as a leader in the Santa Cruz Province of Argentina. Mr. Hunt is the founder of Hunt Mining, and has built several successful enterprises in his career. Mr. Hunt's primary success is Huntwood Industries, one of the largest building products manufacturers in Western North America. Mr. Hunt is also a board member of the Dream Center Foundation.

The Corporation continues development of the NI 43-101 resource estimate for the La Josefina Gold project, located in the Santa Cruz Province of Argentina, as previously announced on March 4th, 2010. This resource calculation is based on over 37,000 meters of drilling completed in February 2009.

The Corporation has continued to explore a number of targets at highly prospective project locations, with results expected to be released in the coming weeks.

About Hunt Mining Corp.

Hunt Mining Corp., through its wholly owned Argentine subsidiary, has been an active and aggressive explorer in Santa Cruz since 2006. Hunt Mining Corp. has completed more than 37,000 meters of HQ core drilling, 416 line kilometers of IP geophysical surveys and has taken more than 10,000 surface channel, chip, and trench samples. Historical results and additional information can be viewed at www.huntmining.com.

Neither the TSX Venture nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture) accepts responsibility for the adequacy or accuracy of this release.

For more information, please contact
Hunt Mining Corp.
Dean Stuart
Investor Relations
(403) 517 2270
dstuart@huntmining.com
or
Hunt Mining Corp.
Matthew J. Hughes
President and CEO
(509) 892-5287
mhughes@huntmining.com
www.huntmining.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Sphere Resources Inc.: Agreement for the Purchase of Two Salars in the Puna Region in Argentina for Development of Sodium Carbonate for the Manufactur

VANCOUVER, BRITISH COLUMBIA--(Marketwire - April 26, 2010) -

Sphere Resources Inc. (TSX VENTURE:SPH.H) (the "Company") announces that it has entered into an Agreement with CanAustra Holdings Limited ("CHL") to acquire CHL's 30.25% holding of Salar de Pocitos ("Pocitos") and Salar de Rio Grande ("Rio Grande") in the Province of Salta, North West Argentina. The concessions are well served by infrastructure with access by sealed road and nearby high voltage electricity, gas pipelines and rail with easy access to the Argentinean industrial cities to the south and to the countries to the north. The City of Salta has an international airport with regular services to Buenos Aires.

Over US$2m has already been invested by the owners on Pocitos and Rio Grande in conducting significant investigations and assessments of the concessions.

The Pocitos concession covers an area of 98 km2. A drilling program carried out under the supervision of the Richard Kleinwort Consultancy Group over two properties covering 200 ha in 2007.

The Rio Grande Concession has a total area of approximately 170 km2. To date, the drilling program at Salar de Rio Grande has been over an area of only 360 hectares over ten years ago under the supervision of Geological & Ceramic Services Pty Ltd. It is proposed that a NI 43-101 be carried out on Rio Grande in the next few months.

A qualified person has not done sufficient work to classify any of these resources as current mineral resources. However, a qualified person is currently reviewing past exploration and drilling results for Sphere.

Pocitos and Rio Grande are located in the elevated and arid Puna region in the north western part of the country close to the Chilean border and form part of a number of highly mineralized Salars in production and development. Within the vicinity are: Salars Cauchari Olaroz, Pocitos, Arizaro and Incahuasi currently owned by Lithium Americas Corp. which has a Preliminary Prospectus and NI43-101; Salar de Olaroz currently being developed by Orocobre Limited; Salar de Rincon previously owned by Admiralty Resources NL and now being developed by the Sentient Group a private equity investment group specializing in resources; Salar de Hombre Muerto where FMC Corporation has a lithium producing plant; and adjacent and across the border in Chile is Salar de Atacama, the largest Lithium producer in the world.

The transaction involves the issue of common shares in Sphere over time based upon the following milestones:

1. a NI43-101 Report on the resources at Salar de Rio Grande ("Rio Grande") within 120 days of the date of the Agreement. Rio Grande holds a minimum in-situ resource of 1.4 million tonnes of sodium sulphate to be used in the manufacture of sodium carbonate for the producers of lithium carbonate in the Puna. Sphere will issue 10 million common shares upon the release of the NI43-101 report confirming the minimum resource.
2. a feasibility study on the development of Salar de Pocitos ("Pocitos") to be made available to Sphere within 120 days of the date of the Agreement. Sphere will issue 3 million common shares to CHL 12 months from the date of the agreement. CHL will use its best endeavours to enable Sphere to make an offer to all other shareholders of the Company holding the rights to the Pocitos concessions in Argentina after Pocitos has been brought into production.
3. a feasibility study on the development and production of sodium carbonate for the manufacture of lithium carbonate within 24 months from the date of the Agreement. Sphere will issue 12 million common shares to CHL in 24 months from the date of this Agreement.

Mr. Stevens is pleased to have Sphere's involvement in this opportunity and stated "I have been intimately involved with the advancement of the prolific Puna Region of Argentina for over 15 years. The acquisition of CHL's holding in Salar de Pocitos and Salar de Rio Grande deposits located in this rich area, which is widely recognized as the world's next large scale, low cost Sodium Sulphate, Sodium Carbonate and Lithium Carbonate brine resource; will provide Sphere with a timely opportunity to enter the Industrial Minerals space, particularly now that there is a fundamental shift in the way the world is embracing electric cars which will contribute to the upward demand pressure to supply Lithium for batteries".

Mr. Stevens is a Director of CHL and has a beneficial interest in 13,335 CHL shares, representing 0.27% of the issued capital, held by his wholly owned company Central Asset Management; and 86,364 CHL shares, representing 1.8% of the issued capital, held by CanAustra Investments Limited where he also holds the position of Managing Director.

About Sphere Resources Inc.

Sphere Resources Inc. is focused on identifying and appropriating exploration targets and other high quality assets in major global mining camps with a particular emphasis on precious metals. It is currently involved in exploring for gold mineralization in the Red Lake District of Ontario.

The proposed transaction remains subject to, among other things, meeting certain milestones, receipt of all requisite regulatory and other approvals, including stock exchange approvals.

On behalf of Sphere Resources Inc.

Malcolm L Stevens, Executive Chairman and President

Statements in this press release other than purely historical information, including statements relating to the Company's future plans and objectives or expected results, constitute forward-looking statements. Forward-looking statements are based on numerous assumptions and are subject to all of the risks and uncertainties inherent in the Company's business, including risks inherent in mineral exploration and development. As a result, actual results may vary materially from those described in the forward-looking statements.

Neither the NEX Board of the 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.

For more information, please contact
Sphere Resources Inc.
Malcolm L Stevens
+34610616548
+61396023554 (FAX)
mls@canaustra.com.au

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Minera Andes Rejects TNR Gold Corp.'s Claim of a Back-in Right to the Los Azules Copper Project

TORONTO, ONTARIO--(Marketwire - April 26, 2010) - Minera Andes Inc. ("Minera Andes") (TSX:MAI)(OTCBB:MNEAF) announces that it has received a notice from Solitario Argentina S.A, a wholly- owned subsidiary of TNR Gold Corp. (together, "TNR") purporting to back-in to a portion of Minera Andes' Los Azules copper project (the "Project") by "waiving" the requirement that Minera Andes have completed a feasibility study.

As we mentioned in our April 1, 2010 news release, Minera Andes rejects the ability of TNR to back- in to any part of the Los Azules copper project. And, as also previously announced, Minera Andes has filed a statement of claim against TNR in the Supreme Court of British Columbia in respect of the same.

The executed agreement in question (as further described below) contains the following clause:

"If, within 36 months of exercising the Option, Xstrata* completed a feasibility study on any part of the Property, Xstrata must notify Solitario, and Solitario will have the right to elect to "buy back" up to a maximum of 25% equity in the Property at any time within 120 days of receiving the said notification (the "Back-in Right") by giving written notice to Xstrata of the exercise of the Back-in Right".

* The obligations of Xstrata under the contract in question was assigned to Minera Andes in the fall of 2009 - see "Background to the TNR Dispute" below.

TNR also claims in their separate suit brought against Xstrata that their back-in right is not subject to the 36-month timeline that appears in the executed agreement. TNR claims the 36-month limit was never the commercial intention of the parties. In particular, TNR claims the 36-month requirement was added by Xstrata, overlooked by TNR (and their lawyers) and not discovered for a number of years all the while Xstrata made payments on their option. In this respect TNR brought a claim in the Supreme Court of British Columbia in October of 2008.

We encourage you to read the full background to the TNR dispute below. We believe the facts of this case will speak for themselves.

Background to the TNR Dispute

*The Project was, until the fall of 2009, subject to an option agreement between Xstrata Copper (and certain affiliates, "Xstrata") and Minera Andes.

*In the fall of 2009, Xstrata elected not to exercise its option to back-in to the Project and subsequently transferred all properties then held by Xstrata (and forming part of the Project) to Minera Andes. Minera Andes now owns 100% of the Project.

*Certain portions of the Project (the "Subject Properties") that were formerly held by Xstrata and transferred to Minera Andes following the termination of the option agreement remain subject to an underlying option agreement between Xstrata and TNR (the "TNR Agreement").

*The TNR Agreement provides that TNR has the right to back-in to up to 25% of the Subject Properties, exercisable by TNR upon the satisfaction of certain conditions within 36 months of Xstrata exercising its option, including the completion of a feasibility study.

*The 36-month period following the exercise of the option expired on April 23, 2010 and no feasibility study has been completed on the Project.

*The Subject Properties comprise the northern half of the Los Azules Copper Project, and does NOT represent 25% of the Los Azules deposit by area or resources identified.

*The TNR Agreement is the subject of two legal disputes:
1. Between TNR and Xstrata, commenced by TNR against Xstrata in the Supreme Court of British Columbia in October 2008. The dispute surrounds the validity of the 36-month time limit in which to complete a feasibility study, which TNR claims was never the commercial intention of the parties. In particular, TNR claims the 36-month requirement was added by Xstrata, overlooked by TNR (and their lawyers) and not discovered for a number of years all the while Xstrata made payments on their option. In this respect TNR brought a claim in the Supreme Court of British Columbia in October of 2008.

2. Between Minera Andes and TNR, commenced by Minera Andes against TNR in the Supreme Court of British Columbia on April 1, 2010. Minera Andes is seeking a declaration that any back- in notice delivered by TNR prior to or on April 23, 2010 will be null, void and of no force and effect on account that a feasibility study must be completed on the Project prior to TNR being entitled to exercise its back-in right. A feasibility study has never been completed on the Project. Further, Minera Andes disputes the legal ability of TNR to waive this condition. Minera Andes received TNR's statement of defence on April 23, 2010.

As an additional point of clarification, Minera Andes wishes to confirm that notwithstanding references by TNR to "its Los Azules" project, that the Project remains 100% owned by Minera Andes and Minera Andes has no agreement or working relationship with TNR.

About Los Azules

Los Azules is a large copper porphyry system located in western San Juan province of Argentina in a belt of porphyry copper deposits that straddles the border between Chile and Argentina. This belt contains some of the world's largest copper deposits, including Codelco's El Teniente and Andina mines, Anglo American's Los Bronces mine, Antofagasta PLC's Los Pelambres mine, and Xstrata's El Pachón project, among others.

Los Azules has an inferred mineral resource of 922 million tonnes grading 0.55 percent copper and containing 11.2 billion pounds of copper at a cut off grade of 0.35 percent copper. There is high-grade, near-surface core of 161 million tonnes grading 0.87 percent copper and containing 3.1 billion pounds of copper at a cut off grade of 0.70 percent copper. The known resource covers an area approximately 3.7 kilometers by 1 kilometer in size and is open at depth and laterally.

About Minera Andes

Minera Andes is an exploration company exploring for gold, silver and copper in Argentina with three significant assets: A 49% interest in Minera Santa Cruz SA who owns the San José Mine which is a large primary silver producer, which produced 4,998,000 million oz silver and 77,070 oz gold in 2009; 100% ownership of the Los Azules copper deposit; and, a portfolio of exploration properties in the highly prospective Deseado Massif region of Santa Cruz Province in southern Argentina. Minera Andes continues to be well funded and have no bank debt.

This news release has been submitted by Nils Engelstad, Vice President - Corporate Affairs.

For further information, please contact: Nils Engelstad or visit our Web site: www.minandes.com.

Scientific and Technical Information:

For further information in respect of the Los Azules project please refer to the technical report entitled "Canadian National Instrument 43-101 Technical Report in Support of the Preliminary Assessment on the Development of the Los Azules Project, San Juan Province, Argentina" dated March 19, 2009, the "Los Azules Report" prepared by Randolph P. Schneider, Robert Sim, Bruce Davis, William L. Rose, and Scott Elfen, each of whom is "independent" of the Corporation and a "qualified person" for the purposes of National Instrument 43-101 – "Standards of Disclosure for Mineral Projects . This report is available on SEDAR (www.sedar.com). The results of the above referenced preliminary assessment are preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the project as described in the preliminary assessment will be realized. The basis for the preliminary assessment and the qualifications and assumptions made are set out in the Los Azules Report.

Cautionary Note to U.S. Investors:

All resource estimates reported by the Corporation were calculated in accordance with Canadian National Instrument 43-101 and the Canadian Institute of Mining and Metallurgy Classification system. These standards differ significantly from the requirements of the U.S. Securities and Exchange Commission. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

Caution Concerning Forward-Looking Statements:

This press release contains certain forward-looking statements and information. The forward-looking statements and information express, as at the date of this press release, the Corporation's plans, estimates, forecasts, projections, expectations or beliefs as to future events and results, including the outcome of pending and current litigation. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by us, are inherently subject to significant business, economic and competitive uncertainties and contingencies and there can be no assurance that such statements will prove to be accurate. Therefore, actual results and future events could differ materially from those anticipated in such statements. Risks and uncertainties that could cause results or future events to differ materially from current expectations expressed or implied by the forward-looking statements include, but are not limited to, factors associated with fluctuations in the market price of precious metals, mining industry risks, risks associated with foreign operations, the state of the capital markets, environmental risks and hazards, uncertainty as to calculation of mineral resources and reserves and other risks.

Readers should not place undue reliance on forward-looking statements or information. The Corporation undertakes no obligation to reissue or update forward-looking statements or information as a result of new information or events after the date hereof except as may be required by law. See the Corporation's annual information form for additional information on risks, uncertainties and other factors relating to the forward-looking statements and information. All forward-looking statements and information made in this news release are qualified by this cautionary statement.

The TSX has not reviewed and does not accept responsibility for the adequacy or accuracy of the contents of this news release, which has been prepared by management.

For more information, please contact
Minera Andes
Nils Engelstad
Vice President, Corporate Affairs
647-258-0395 or Toll-Free: 1-866-441-0690
647-258-0408 (FAX)
info@minandes.com
www.minandes.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

TNR Gold Subsidiary Serves Notice of Back-In Into Los Azules to Minera Andes and Secures Standby Credit Facility

VANCOUVER, BRITISH COLUMBIA--(Marketwire - April 26, 2010) - Compañía Minera Solitario Argentina S.A. ("Solitario"), a wholly owned subsidiary of TNR Gold Corp. ("TNR") (TSX VENTURE:TNR), has served notice to Minera Andes Inc. exercising its back-in right for 25% of certain of the properties (the "Properties") constituting the Los Azules project in Argentina (the "Los Azules Project"). TNR also entered into a standby credit facility in the aggregate principal amount of CAD$5 million (the "Facility") for a term of one-year. The proceeds from the Facility have been placed in a trust account to be released on closing of the exercise of the back-in right.

TNR has issued 2,272,727 common shares to the lender as partial consideration for the Facility and has agreed to issue another CAD$500,000 of common shares with a deemed price equal to the 10-day volume weighted average trading price as of the day prior to the court's decision in certain circumstances where TNR is successful in its litigation with respect to the back-in right. In addition, TNR has paid a corporate finance fee of CAD$305,000.

The right of TNR and Solitario to exercise the back-in right for the Los Azules Project is subject to a legal action commenced by Minera Andes Inc., Minera Andes S.A., Los Azules Mining Inc. and Andes Corporacion Minera S.A. (the "MAI Group") against TNR and Solitaro in which the MAI Group is disputing Solitario's ability to waive the production of a feasibility study and issue a back-in notice at this time. The action seeks declaratory relief that any back-in notice is invalid, void or of no force and effect, and advances a claim for costs. TNR is also in a legal dispute with MIM Argentina Exploraciones S.A. ("MIM") a subsidiary of Xstrata PLC, over the language of the back-in clause of the Exploration and Option Agreement entered into between Solitario and MIM. In the action, TNR is also seeking confirmation of its ownership in the Escorpio IV property, which is located adjacent to the Los Azules Project and a declaration that the Escorpio IV property is excluded from the Exploration and Option Agreement. A court date has been set for the fall of 2010.

ABOUT TNR GOLD

TNR and International Lithium Corp ("ILC") are diversified metals exploration companies focused on exploring existing properties and identifying new prospective projects globally. TNR has a portfolio of 18 active projects, of which 9 will be included in the proposed spin-off of International Lithium Corp. For further details of the spin-off please refer to TNR's April 12, 2010 news release or visit http://www.internationallithium.com.

The recent acquisition of lithium, other rare metals and rare-earth elements projects in Argentina, Canada, USA and Ireland confirms the companies' commitments to generating projects, diversifying its markets, and building shareholder value.

On behalf of the board,

Gary Schellenberg, President

Cautionary Language and Forward-Looking Statements

This press release includes certain statements that may be deemed "forward-looking statements". All statements in this discussion, other than statements of historical facts, that address future exploration drilling, exploration activities and events or developments that TNR expects, are forward looking statements. Although the Company believes the expectations expressed in such forward looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include metal prices, exploration successes, continued availability of capital and financing, and general economic, market or business conditions. In particular, there are no assurances that TNR will be successful in the current litigation with respect to the Los Azules Project and its back-in right and there are no assurances that TNR will be able to refinance the Facility in the event that the closing with respect to the Properties is delayed beyond the term of the Facility. Accordingly, readers should not place undue reliance on forward-looking statements. This news release and the information contained herein does not constitute an offer of securities for sale in the United States and securities may not be offered or sold in the United States absent registration or exemption from registration.

CUSIP: #87260X 109

SEC 12g3-2(b): Exemption #82-4434

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

For more information, please contact
TNR Gold Corp.
Gary Schellenberg
President
(604) 687-7551 or 1-800-667-4470
(604) 687-4670 (FAX)
info@tnrgoldcorp.com
www.tnrgoldcorp.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Marifil Regains 100% Interest in Its Las Aguilas Copper-Nickel-PGE Property, Argentina

Marifil Seeking JV Partner for Largest Nickel-Platinum Resource in Argentina

SPOKANE, WASHINGTON--(Marketwire - April 23, 2010) - MARIFIL MINES LTD. (TSX VENTURE:MFM) ("Marifil") announces that Castillian Resources Corp. has terminated its agreement with Marifil (see News Release April 20, 2010) and provided the Company with a NI 43-101 report on the property.

Marifil once again controls 100% of the "Las Aguilas" property located in the San Luis province of Argentina. Las Aguilas is part of Marifil's 55,000 hectare San Luis Nickel-Copper-Platinum Project. To date more than US$13 million has been spent exploring the San Luis project.

Nickel and platinum prices are on the rise and the Company believes this project could be quickly developed into an open-pit and underground mine. Preliminary metallurgical test work is quite favorable.

The Company is looking for a partner to either buy the project or come in as a Joint Venture partner and Operator.

Marifil's Las Aguilas deposit contains an historical resource of 2.2 million tonnes grading about 0.52% nickel, 0.50% copper, 0.04% cobalt and significant amounts of platinum (this is not a National Instrument 43-101 compliant reserve and investors should not rely on this estimate). This resource was determined by Direccion General de Fabricaciones Militares ("DGFM") (Argentina Geological Survey), which carried out almost 10,000 meters of diamond drilling between 1970 and 1984. Marifil believes this resource to be relevant to the extent that it shows that significant quantities of disseminated to semi-massive pyrrhotite, pentlandite and chalcopyrite (ores of copper, nickel, cobalt and platinum) are present and constitute a valid exploration target.

Castillian drilled 12,857 m in 78 drill holes. This work substantially expanded the historic resource. The Company is now reviewing this new information and plans to produce an NI 43-101 compliant ore resource report this year.

Mineralization comprises pentlandite (an ore of nickel), chalcopyrite (an ore of copper) and pyrrhotite (an iron sulfide) along with significant amounts of platinum group elements (PGE's) and minor amounts of cobalt and gold. Mineralization is found in two layered ultramafic intrusions: Las Aguilas East and Las Aguilas West.

The Las Aguilas East deposit is lensoidal in shape and plunges at 40o to 45o to the southeast. The deposit is not only open-ended at depth but also appears to be increasing in size and grade with depth. The known vertical extent of the deposit is nearly 275 m.

The Las Aguilas West deposit is hosted in a mafic intrusion that can be followed for 500 m along strike. The deposit trends N20o E with sub vertical dips. Mineralization has now been traced for 500 m along strike and to a depth of nearly 250 m. The deposit is still open ended at depth and to a lesser extent along strike.

Other prospects known to occur along this 80 km belt include the Virorco, Fierro, and EF-2 prospects as well as a number of untested geophysical and geochemical targets.

This press release has been reviewed and approved by John Hite, President of Marifil Mines Ltd. under whose direction the exploration program is being carried out. Mr. Hite is a Qualified Person as defined by National Instrument 43-101.

The statements made in this press release may contain forward-looking statements that may involve a number of risks and uncertainties. Actual events or results could differ materially from the Company's expectations and projections.

For further information regarding Marifil Mines Ltd., please refer to the Company's filings on SEDAR (Http://www.sedar.com) or at Marifil's Website (Http://www.marifilmines.com).

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release. Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

For more information, please contact
Marifil Mines Ltd.
John Hite
President
(509) 999-7952
www.marifilmines.com
or
Marifil Mines Ltd.
Hugh Oswald
Investor Relations
604.684.4743 ext. 243
hugh@ascentacapital.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Castillian Provides Corporate Update

TORONTO, ONTARIO--(Marketwire - April 23, 2010) - Castillian Resources Corporation ("Castillian" or the "Company") (TSX VENTURE:CT) is pleased to provide an update on its corporate activities in Canada, South America and Tanzania. Bill Pearson, President & CEO of Castillian commented, "With the acquisition of the Hope Brook Gold Mine Project we are accelerating the transition of Castillian to an aggressive junior gold exploration and development company focused in the Americas. We are continuing to evaluate options for our nickel-copper projects which remain valuable assets for the Company. A major strength of Castillian is its strong technical team that allows us to carry our exploration programs throughout North and South America."

Hope Brook Gold Project, Newfoundland

On March 8, 2010, Castillian announced that it had acquired a 100% interest in approximately 993 claims comprising the Hope Brook Gold Project located on the southwest coast of Newfoundland from the Quinlan Brothers prospectors (the "Vendors") (See Press Release dated February 9, 2010). Pursuant to the terms of the acquisition agreement, Castillian has made a cash payment in the amount of 35,000 and has 100,000 common shares of the Company to the Vendors. The Hope Brook deposit, discovered in 1993 by BP-Selco Inc., was mined from 1987 to 1997 with total production reported to be 752,826 ounces of gold plus a copper concentrate from 1993 to 1997. Preproduction historical resources are reported to have been 10.2 million tonnes grading 4.54 g Au/ and 0.12% Cu (1.45 million ounces of gold) (Geological Survey, Newfoundland and Labrador). These resources are historical in nature and are not National Instrument 43-101 ("NI 43-101") compliant. Castillian has not done the work necessary to verify this resource and hence cautions that this estimate should not be relied upon.

A compilation of all available data filed with the Mines Branch of Newfoundland & Labrador Natural Resources Ministry is in progress. The Geology Survey of the Mines Branch also has selected diamond drill core available from the deposit which have been examined. Physical property measurements have been completed on selected core samples to aid in planning of further geophysical work. Work is also progressing on developing the best approach for further exploration which will include induced polarization geophysical surveys and diamond drilling. In addition the Company has retained an independent geological consultant to prepare a NI 43-101 compliant report.

Bill Pearson, President & CEO of Castillian commented "We are very excited about the potential of Hope Brook. Initial results of our compilation work indicate that the gold mineralized zone appears to be open at depth below the old mine and some of the historic drill holes may not have been drilled far enough to intersect the zone. In addition, based on this analysis, the Company believes, there is excellent potential for larger tonnage, lower grade, bulk mineable mineralization. Field work is expected to commence this summer and this project will be a major focus for the Company."

Paramirim Gold-Copper Project, Bahia State, Brazil

The 100% owned Paramirim Gold-Copper Project located in west-central Bahia state, Brazil, was acquired by Castillian through its acquisition of Tucano Resources (See Press Release dated January 29, 2010). The Paramirim project consists of 35 mineral concessions covering more than 39,000 hectares. This project covers a favourable belt for both IOCG-style mineralization and orogenic gold that extends some 80 km along strike. There are extensive garimpeiro (artisanal miner) workings along the belt for both gold and copper. Work completed by Tucano includes geological mapping, sampling and approximately 2,000 metres of reconnaissance drilling, which has defined a number of follow-up targets. The project is discussed in detail in a NI 43-101 technical report prepared by B. Terrence Hennessey, P.Geo. of Micon International Limited that is available on Sedar.

Castillian plans to initially carry out induced polarization surveys on the principal IOCG targets identified by previous work and continue geological mapping, prospecting and sampling to define additional drill targets.

Pure Gold Property, Yukon

In February 2010, Castillian announced that it had acquired by staking a 100% interest in 46 mineral claims totaling 961.54 hectares located in the historic Klondike gold fields (See Press Release dated February 23, 2010). The property known as the Pure Gold Property is located at the headwaters of Pure Gold Gulch, nine kilometres southeast of Dawson City. The Pure Gold Property lies within the Tintina Gold Belt that hosts a number of world class gold deposits including Donlin Creek, Nixon Fork, Fort Knox, Pogo, Brewery Creek and Dublin Gulch. Recently, a number of new discoveries have been made in the belt including the White property. The White property is located 95 kilometres immediately south of the Pure Gold property and is in the same geological setting and environment. The primary target on the Pure Gold property is for "White" style gold mineralization that has been the focus of extensive exploration in the region over the past two years. Worked planned in summer 2010 includes geological mapping, prospecting and sampling.

Achachucani (formerly Pederson) Gold Project, Bolivia

The Achachucani Gold Project (formerly known as the Pederson Project) is located in the central west side of Bolivia, approximately 360 km south of La Paz. The property comprises approximately 78 square kilometers within 13 contiguous concessions. The claims contain a near surface, structurally controlled, sediment hosted gold deposit. Orvana Minerals Corporation and BHP, defined an area of continuous mineralization for which a historical resource estimate of 51.6 million tonnes grading 1.4 g/t Au containing 2.3 million ounces of gold was delineated. Approximately 20% to 25% of the historical resource is reported to be contained within oxidized material which potentially could be heap leached. This resource is historical in nature and is not NI 43-101 compliant. Castillian has not done the work necessary to verify this resource and cautions that this estimate should not be relied upon.

The Company entered into the agreement to acquire a 90% interest in the project in September 2005. The project is presently under force majeure due to opposition by certain members of the local community. The Company has hired an experienced Bolivian consultant and has initiated a program of public meetings with all stake holders in the local communities and governments to address concerns and obtain a resolution of the issues that is satisfactory to all parties involved so that exploration work may proceed with respect to the project.

Kagera Nickel-Copper Project, Tanzania

The Company holds a 100% interest in six concessions in the prospective Kabanga-Musongati mafic-ultramafic belt in northwest Tanzania. The properties of the Kagera Nickel Project comprise a large land position covering approximately 960 square kilometers along the western border of Tanzania. The property is directly adjacent to the important nickel sulphide Kabanga Nickel Deposit (Tanzania), the largest undeveloped high grade nickel sulphide deposit in the world. The Kabanga Nickel Deposit is currently undergoing feasibility studies in a 50:50 joint venture among Xstrata Nickel (the operator) and Barrick Gold. The deposit is one of the world's largest nickel sulfide projects. The Company is reviewing alternatives for reactivating the project.

Mangabal Nickel-Copper Project, Goias State, Brazil

The Mangabal Project concessions which originally covered approximately 153,000 hectares have been reduced to approximately 8,474 hectares to cover the core areas of nickel-copper mineralization. In 2007 and 2008, Castillian completed an extensive drill program to test the Mangabal South deposit and other targets in the area. Highlights from this drilling included hole CRMS-07-060 which intersected 15.55 meters grading 0.91% nickel and 0.46% copper; hole CRMS-07-076 which intersected 14.40 meters grading 1.05% nickel and 0.33% copper; hole CRMS-07-085 which intersected 9.00 meters grading 1.18% nickel and 0.39% copper and hole CRMS-07-086 which intersected 7.00 meters grading 0.99% nickel and 0.38% copper.

On February 2, 2010, Castillian reached an agreement with Xstrata Brazil to amend the agreement whereby Xstrata has agreed to vest Castillian's interest at 100% for consideration of cash payments made, shares issued and work already completed, subject to a 2% net smelter royalty and rights to offtake as defined in the initial agreement. Castillian is reviewing alternatives for further advancing the Property.

Las Aguillas Nickel-Copper-PGM Project, Province of San Luis, Argentina

Castillian announces that it has terminated its agreement with Maximus Resources Ltd. ("Maximus") whereby it can acquire 100% of Maximus' rights to acquire an interest in the Las Aguillas Nickel-Copper-PGM Project in the Province of San Luis, Argentina, from Marifil Mines Ltd. and it has also terminated a second agreement with Marifil relating to the regional exploration in the San Luis area (See Press Release dated March 6, 2007).

Dr. Bill Pearson, P.Geo. and Mr. David Gower, P.Geo., directors of the Company and both qualified persons as defined by National Instrument 43-101, have reviewed and approved the technical content of this press release.

Management and Corporate Update

The Company announces that Mr. Helio Diniz has resigned as Chief Operating Offer but will continue his involvement with Castillian as a Co-Manager for South America projects. Bill Pearson, President & CEO commented: "I am very pleased that Helio will continue to be involved with Castillian going forward as we transition to be a gold-focused junior exploration and development company. He has made a valuable contribution to building Castillian and will continue to play an important role in advancing our projects in South America."

Castillian is in the process of revising and updating its website which will be re-launched shortly.

Castillian Resources Corp. is a Canadian mineral exploration company listed on the TSX Venture Exchange under the symbol "CT" which has gold and base metal properties in Canada, South America and Tanzania.

Cautionary Note Regarding Forward-looking Information

This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, statements with respect to the future financial or operating performance of the Company, its subsidiaries and its projects, statements regarding exploration prospects, the identification of mineral reserves and resources, costs of and capital for exploration projects, exploration expenditures, timing of future exploration, requirements for additional capital, government regulation of mining operations, environmental risks, reclamation expenses, title disputes or claims, limitations of insurance coverage and the timing and possible outcome of pending litigation and regulatory matters. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: general business, economic, competitive, political and social uncertainties; acquisition risks, the actual results of current exploration activities; delay or failure to receive board or regulatory approvals; timing and availability of external financing on acceptable terms;; conclusions of economic evaluations; changes in project parameters as plans continue to be refined; future prices of mineral prices; failure of plant, equipment or processes to operate as anticipated; accidents, labour disputes and shortages and other risks of the mining industry; and, delays in obtaining governmental approvals or required financing or in the completion of activities. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information 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 information. The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws.

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.

For more information, please contact
Castillian Resources Corp.
Bill Pearson
President & CEO
416-861-2968
info@castillian.ca
www.castillian.ca

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Rodinia Minerals Inc. Reports Phase II Sample Results at Diablillos With Brines Up to 1000 mg/L Lithium and 11000 mg/L Potassium

TORONTO, ONTARIO--(Marketwire - April 20, 2010) - Rodinia Minerals Inc. ("Rodinia" or the "Company") (TSX VENTURE:RM)(OTCQX:RDNAF), is pleased to report that it has received positive phase II sample results from its auger drill exploration program on its Salar de Diablillos lithium-brine project in Salta, Argentina ("Diablillos"). The Company believes the phase II results may be indicative of high concentrations of lithium and potash, and are encouraged to see results that exceed the initial sample results (see Press Release dated March 1, 2010). The phase II sample results were taken at depths between 3 and 5 metres below surface, whereas the previously reported results were taken between 1 and 3 metres below surface.

Results from the phase II sampling of brines have returned lithium ("Li") values of up to 1,000 milligrams per litre ("mg/L") and favourable magnesium ("Mg") to lithium ratios. The samples, all taken from within aquifers on the Diablillos property, averaged 895 mg/L Li with ratios of 4.44 Mg:Li, and 5.22 SO4:Li. These samples are from the aquifer that will be the focus of subsequent exploration programs and will be used to assess the feasibility of production in the future. The results represent the first batch of deep auger drilling samples currently being performed on a 300 metre by 300 metre grid over the Diablillos project. The Company expects more results over the next few months. The results from phase II aquifer sampling are summarized in the table and figure below.















To view Figure 1, please visit the following link: http://media3.marketwire.com/docs/RM420f1.pdf

The Company continues to employ a sampling procedure that is designed to ensure sample integrity by minimizing contamination of brine samples through the dissolution of overlying sediments and evaporates, that may be enriched in lithium. All holes were drilled to a depth sufficient to ensure penetration of the overlying clay layer, which varies in thickness between one and over three metres. Below the clays, a medium to coarse grained sand aquifer was encountered containing high-grade lithium brine in its porous space. As previously outlined, a historical drill hole in the south eastern margin of the salar indicates the presence of this aquifer to a vertical depth of at least 75 metres, with material coarsening at depth to a coarse basal conglomerate (SEGEMAR; www.segemar.gov.ar).

Sample integrity was maintained by pushing four inch casing down into the hole and pumping, where possible, the contents of the hole. The hole was then left to refill from the aquifer below, ensuring proper representation of brine geochemistry. This brine was then sampled and decanted before collection in sealed plastic containers that had been previously rinsed in the same brine. All samples were sent to ALS Laboratory Group, Environmental Division, in Fort Collins, CO, USA where Rodinia is sending both its Diablillos and Clayton Valley project samples.

Rodinia's auger drill exploration program is expected to continue on a 300 metre by 300 metre grid across the property, and gravity surveys and a reverse circulation ("RC") drill program are planned. The gravity survey will be used to determine the basement depth of the prospective areas over the salar and will help generate the initial targets for a planned 32 drill hole RC program. The continuation of the auger drill program and the initiation of gravity surveys and RC drilling are expected to lead towards a resource estimate at Diablillos later in 2010.

The project is supervised by William Randall MSc (Geology), the Vice President Exploration of Rodinia. Mr. Randall is a qualified person, as defined by National Instrument 43-101, and he has reviewed and approved the scientific and technical information in this release. According to the Company's sampling protocol, sample size is to exceed 300 millilitres and be stored in clean, secure containers for transportation. The prepared samples are then forwarded to the ALS Laboratory Group, Environmental Division, in Fort Collins, CO (USA) for analysis. A rigorous QA/QC program is implemented consisting of regular insertion of standards and blanks to ensure laboratory integrity.

About Rodinia Minerals Inc.:

Rodinia Minerals Inc. is a Canadian mineral exploration company with a primary focus on lithium exploration and development in North and South America. The Company is positioned to capitalize on the expected increase in demand for lithium carbonate that is projected to result from the anticipated paradigm shift to mass adoption and use of key lithium applications like lithium-ion batteries as well as glass ceramics, greases, pharmaceuticals etc.

Rodinia is currently exploring its Clayton Valley project in Nevada, USA, which surrounds the only lithium-brine producer in North America, and its Diablillos project in Salta, Argentina.

Please visit the Company's web site at www.rodiniaminerals.com or write us at info@rodiniaminerals.com

Cautionary Notes

Except for statements of historical fact contained herein, the information in this press release constitutes "forward-looking information" within the meaning of Canadian securities law. Such forward-looking information may be identified by words such as "plans", "proposes", "estimates", "intends", "expects", "believes", "may", "will" and include without limitation, statements regarding the impact of the drill program at the Diablillos property and results of such drill program; the potential of the Company's projects; the potential results and timetable for further exploration with respect to the Clayton Valley project and the Diablillos property, the timetable with respect to future acquisitions and exploration developments at Clayton Valley and Diablillos, timetable for further exploration, analysis and development, title disputes or claims; and governmental approvals and regulation. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from such statements. Factors that could cause actual results to differ materially include, among others, metal prices, competition, financing risks, acquisition risks, risks inherent in the mining industry, and regulatory risks. Most of these factors are outside the control of the Company. Investors are cautioned not to put undue reliance on forward-looking information. Except as otherwise required by applicable securities statutes or regulation, the Company expressly disclaims any intent or obligation to update publicly forward-looking information, whether as a result of new information, future events or otherwise.

NEITHER THE 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.

For more information, please contact
Rodinia Minerals Inc.
David Stein
President & CEO
+1 (416) 861-5812
or
Rodinia Minerals Inc.
Aaron Wolfe
Vice President, Corporate Development
+1 (416) 309-2696

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Pan American Silver Announces Release Date for 2010 Unaudited First Quarter Results

VANCOUVER, BRITISH COLUMBIA--(Marketwire - April 20, 2010) - Pan American Silver Corp. (TSX:PAA)(NASDAQ:PAAS) today announced that its unaudited 2010 first quarter results will be released on Monday, May 10, 2010 after market closes. A conference call and live audio webcast to discuss the results will be held on Tuesday, May 11 at 8:00 am Pacific Time (11:00 am Eastern Time).

Q1 2010 Results Conference Call and Webcast Information

Date: Tuesday, May 11, 2010
Time: 8:00 am Pacific Time; 11:00 Eastern Time

Conference Call Dial-In Numbers
North America and International access number: 1-604-638-5340

Audio Webcast
A live audio webcast can be accessed at:
https://services.choruscall.com/links/pan100511.html

Conference Call Replay Numbers
North America and International access number: 1-604-638-9010
Code (followed by the # sign): 6218
Playback available for seven days following the call

About Pan American Silver

Pan American Silver's mission is to be the world's largest and lowest cost primary silver mining company by increasing its low cost silver production and silver reserves. The Company currently has eight silver mining operations in Mexico, Peru, Argentina and Bolivia. The Company is also advancing the La Preciosa joint-venture silver project in Mexico and the 100% owned Navidad silver project in Argentina.

For more information, please contact
Pan American Silver Corp.
Kettina Cordero
Coordinator, Investor Relations
(604) 684-1175
(604) 684-0147 (FAX)
info@panamericansilver.com
www.panamericansilver.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Plato Gold Reports on 2009 Year End Results and Grant of Options

TORONTO, ONTARIO--(Marketwire - April 21, 2010) -

NOT FOR DISTRIBUTION IN THE UNITED STATES.

Plato Gold Corp. (TSX VENTURE:PGC) ("Plato" or the "Company") an exploration company with a portfolio of properties in significant gold mining camps in Northern Ontario, Northern Québec, and Santa Cruz, Argentina is pleased to report the three and twelve months financial results for fiscal 2009 and 2008 as summarized below:










For fully details, please visit us at www.platogold.com.

In addition, at the meeting of the board of directors on April 20, 2010, the board in accordance with the Corporation's stock option plan, approved the grant of options to acquire a total of 1,875,000 common shares of the Corporation at an exercise price of $0.10 per share to the Corporation's directors, officers, employees and consultants. The stock options are vested on date of the grant. Prior to the grant of options, the Corporation has 103,175,117 shares outstanding.

About Plato Gold Corp.

Plato Gold Corp. is a Canadian junior gold exploration company listed on the TSX Venture Exchange with exploration projects in Northern Ontario, Northern Québec and the Lolita Property in the province of Santa Cruz, Argentina.

The Northern Ontario project includes 5 properties: Guibord, Harker, Harker-Garrison, Holloway and Marriott in the Harker/Holloway gold camp located east of Timmins, Ontario.

The Northern Québec project includes 7 properties: Nordeau Bateman, Vauquelin, Vauquelin Pershing, Vauquelin Horseshoe, Pershing Denain, Hop O'My Thumb and Once Upon a Time. All 7 properties are located near Val d'Or, Québec.

Plato is in the advanced exploration stage on the Nordeau West site with a NI 43-101 compliant gold resource reported on March 12, 2009. Highlights of the Nordeau West mineral resource update include:

indicated resources of 30,212 oz Au on average grade of 4.17 g/t and 225,342 tonnes; and
inferred resources of 146,315 oz Au on average grade of 4.09 g/t and 1,112,321 tonnes.

In Argentina, the Lolita Property is comprised of 3 contiguous concessions and initial work has been started on this property. For additional company information, please visit: www.platogold.com.

Forward Looking Statements

This news release contains "forward-looking statements", within the meaning of applicable securities laws. These statements include, but are not limited to, statements regarding the proposed private placement and closing thereof, Mineralfields' subscription for additional Flow-Through Units, potential mineralization and resources, exploration results, and future plans and objectives. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking statements are based on the opinions and estimates of management as of the date such statements are made, and they are subject to known and unknown risks, uncertainties and other factors that may cause the actual results, use of proceeds, level of activity, performance or achievements of Plato to be materially different from those expressed or implied by such forward-looking statements, including but not limited to risks related to: raising less than the required amount; not realizing on the anticipated benefits from the offering transaction or not realizing on such anticipated benefits within the expected time frame; risks related to exploration; actual resource viability, and other risks of the mining industry . Although management of Plato has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such 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 does not undertake to update any forward-looking statements that are incorporated by reference herein, whether as a result of new information, future events or otherwise, except in accordance with applicable securities laws.

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.

For more information, please contact
Plato Gold Corp.
Anthony Cohen
President and CEO
416-968-0608
416-968-3339 (FAX)
info@platogold.com
www.platogold.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

Minera Andes Announces First Quarter 2010 San Jose Mine Production

TORONTO, ONTARIO--(Marketwire - April 21, 2010) - Minera Andes Inc. (the "Corporation" or "Minera Andes") (TSX:MAI)(OTCBB:MNEAF) announces production results from its 49% owned San José mine in Santa Cruz Province, Argentina. Overall production at the San José mine during the first quarter of 2010 was 823,000 ounces of silver and 16,430 ounces of gold, of which 49% is attributable to Minera Andes.

First quarter 2010 first quarter silver and gold production were 20% and 18% lower respectively compared to the fourth quarter of 2009 as a result of lower mine production and lower head grades for both silver and gold as well as lower silver recovery rates in the mill, partially offset by higher gold recovery rates. Mine production has been impacted by delays in underground mine development, which has delayed access to certain higher grade stoping areas. Mill throughput in the first quarter of 2010 was 4% lower than the level of the previous quarter. Year on year, silver and gold production were 37% and 1% lower respectively, mainly due to the delay in mine development.











First quarter production cost information will be provided when available in a subsequent press release.

At San José, Minera Santa Cruz is completing permits to commence exploration drilling at the new Aguas Vivas target located 10 kilometers northwest of the San José operation.

Minera Andes is a gold, silver and copper exploration company focused in Argentina. The Corporation holds three significant assets:

1. 49% interest in Minera Santa Cruz SA, the company that operates the San Jose Mine, one of the world's largest primary silver mines;
2. 100% of the Los Azules copper project, which is currently being drilled;
3. A portfolio of exploration properties near and around its existing assets. Geophysical surveys are currently underway at the Company's exploration properties in Santa Cruz province, and we expect to start drilling on these properties late in the second quarter.

This news release is submitted by James K. Duff, Chief Operating Officer of Minera Andes Inc.

Reliability of Information: Minera Santa Cruz S.A., the owner of the San José mine, is responsible for and has supplied to the Corporation all reported results from the San José mine. This press release is based entirely on information provided to Minera Andes by Minera Santa Cruz S.A. (MSC). Minera Andes' joint venture partner, a subsidiary of Hochschild Mining plc, and its affiliates other than MSC do not accept responsibility for the use of project data or the adequacy or accuracy of this release. As the Corporation is not the operator of the San José mine, there can be no assurance that production information reported to the Corporation by MSC is accurate, the Corporation has not independently verified such information and readers are therefore cautioned regarding the extent to which they should rely upon such information.

Caution Concerning Forward-Looking Statements: This news release contains forward-looking statements and forward-looking information within the meaning of applicable US and Canadian securities laws. Such forward-looking statements or information include but may not be limited to references to ongoing labour relations cooperation and expected production. In making the forward-looking statements and providing the forward-looking information, we have made numerous assumptions. Although our management believes that the assumptions made and the expectations represented by such statements or information are reasonable, there can be no assurance that the forward-looking statements will prove to be accurate. Forward-looking statements and information involve known and unknown risks, uncertainties and other factors that may cause our actual results to be materially different from that expressed or implied by such forward-looking information. Such risks, uncertainties and other factors include among other things, declines in the price of gold, silver, copper and other base metals, capital and operating cost increases, changes in general economic and business conditions, including changes in interest rates and the demand for base metals, economic and political instability in Argentina, discrepancies between actual and estimated production and mineral reserves and resources; operational and development risk; the speculative nature of mineral exploration and regulatory risks. Readers should not place undue reliance on forward-looking statements or information. We undertake no obligation to reissue or update forward-looking statements or information as a result of new information or events after the date hereof except as may be required by law. See our annual information form for additional information on risks, uncertainties and other factors relating to the forward-looking statements and information. All forward-looking statements and information made in this news release are qualified by this cautionary statement.

For more information, please contact
Minera Andes Inc.
Jim Duff
Chief Operating Officer
647-258-0395 or Toll-Free: 1-866-441-0690
647-258-0408 (FAX)
info@minandes.com
www.minandes.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/

G4G Announces Revised Terms of Agreement to Acquire Interest in Geothermal Properties in Argentina

VANCOUVER, BRITISH COLUMBIA--(Marketwire - April 21, 2010) - G4G Resources Ltd. ("G4G" or the "Company") (TSX VENTURE:GXG), announces that it has entered into an amending agreement that revises the terms under which it would acquire an interest in three separate geothermal areas in Argentina. G4G had previously announced on February 16, 2010 that it had entered into an assignment agreement relating to the proposed acquisition with Grupo Minero Aconcagua S.A. ("Aconcagua"), a private company registered in Argentina and Andean Geothermal Power Corporation, a private company registered in Texas, United States of America ("Andean" and, together with Aconcagua, the "Seller"). Pursuant to the amended assignment agreement (the "Agreement"), the Company will assume the Seller's obligations under an exploration contract with an option to purchase (the "Exploration and Option Agreement") originally entered into between Aconcagua and Geotermia Andina S.A., an Argentinean energy company ("Geotermia Andina"). Aconcagua later assigned its interest in the Exploration and Option Agreement to Andean.

The Exploration and Option Agreement to be assigned to G4G pursuant to the Agreement will provide G4G with geothermal rights to the Valle del Cura (which includes the Despoblados project), Tuzgle and Tocomar projects located in the San Juan, Jujuy and Salta provinces of Argentina, respectively. These projects are in close proximity to roads and/or power lines. The Despoblados project is approximately 8 kilometres from Barrick Gold Corporation's Veladero mine and 20 kilometres from its proposed Pasqua-Lama mine. The Tuzgle property is in close proximity to an existing power grid, and to current and potential lithium operations, which require large amounts of power to process lithium and potash. A technical report on the Despoblados project is being separately announced and filed by G4G on SEDAR.

In assuming the Seller's obligations under the Exploration and Option Agreement, G4G would be required to make remaining payments to Geotermia Andina totaling US$3,860,000 in respect of the Valle del Cura projects and US$6,290,000 in respect of the Tuzgle-Tocomar projects in accordance with the following schedule:

Valle del Cura
March 31, 2010 US$180,000
September 30, 2010 US$282,500
March 31, 2011 US$310,000
September 30, 2011 US$342,500
March 31, 2012 US$360,000
September 30, 2012 US$375,000
March 31, 2013 US$250,000
September 30, 2013 US$1,760,000
Total US$3,860,000

Tuzgle-Tocomar
March 31, 2010 US$200,000
September 30, 2010 US$287,500
March 31, 2011 US$365,000
September 30, 2011 US$407,500
March 31, 2012 US$475,000
September 30, 2012 US$500,000
March 31, 2013 US$425,000
September 30, 2013 US$3,630,000
Total US$6,290,000

Payment of the amounts referred to above will result in G4G acquiring an interest in the Valle del Cura and Tuzgle-Tocomar projects, subject to a 3% royalty on production. G4G may exercise its option to purchase independently in respect of the Valle del Cura project and the Tuzgle-Tocomar project and may also withdraw from either or both of the projects.

Because the proposed transactions have not yet received shareholder and TSX Venture Exchange approval, the Agreement provides that G4G will pay Geotermia Andina the amounts of US$180,000 in respect of the Valle del Cura project and US$200,000 in respect of the Tuzgle-Tocomar project that were due to be paid by Andean on March 31, 2010. The US$180,000 will be paid no later than April 23, 2010 and the US$200,000 will be paid on or before June 1, 2010. In addition, G4G will pay to Geotermia Andina additional amounts to fund a work program in respect of the properties scheduled to be completed by April 30, 2010. These amounts are expected to total approximately US$40,000. In the event that the required shareholder, TSX Venture Exchange and other approvals are not obtained for the proposed transactions, the Agreement provides that Andean will reimburse G4G for the amounts paid by G4G referred to above.

In addition to assuming the obligations of the Seller under the Exploration and Option Agreement, the Agreement requires G4G to issue 20,000,000 G4G common shares to the Seller as partial consideration for the assignment of the Exploration and Option Agreement to G4G. Under the revised terms of the Agreement, G4G will issue those common shares from treasury to the Seller in accordance with a schedule that corresponds to the schedule of payments to be made by G4G to Geotermia Andina in respect of the Valle del Cura and Tuzgle-Tocomar projects.

The schedule for the issuance of common shares is as follows:
Date of receipt of required shareholder, TSX Venture Exchange and other approvals 2,000,000
September 30, 2010 1,900,000
March 31, 2011 1,350,000
September 30, 2011 1,500,000
March 31, 2012 1,670,000
September 30, 2012 1,750,000
March 31, 2013 1,350,000
September 30, 2013 8,480,000
Total 20,000,000

The amendments do not change G4G's other payment and funding obligations under the Agreement. In particular:

* G4G will fund the work program and feasibility study on the Despoblados project in the total amount of US$1,853,000 over two years, and
* G4G will pay within 30 days the amount of CAD$265,000 to Viso Gero Global Inc. to satisfy the amounts owing by Andean under a loan.

G4G will develop the Despoblados property under a joint venture with Energia Provincial Sociedad del Estado ("EPSE"), which is the state-owned electrical utility of the province of San Juan. Under the joint venture agreement with EPSE, G4G will acquire 90% of the emerging rights of the Despoblados project. The Agreement with the Seller will assign to G4G the rights to earn 100% of the remaining area comprising the Valle del Cura project as well as 100% of the Tuzgle-Tocomar project on payment of the amounts referred to above.

G4G also announces that it has withdrawn its application for the geothermal rights to an additional 18,732 hectares adjacent to the Anetta geothermal property located in the province of Salta, Argentina. The application was previously announced by the Company on February 16, 2010.

G4G anticipates that it will hold its annual meeting of shareholders in June 2010. In addition to regular annual meeting business, the proposed transactions will be put forward to G4G's shareholders for approval at the meeting. G4G will prepare a management information circular describing the transactions which it expects to mail to shareholders in due course.

Completion of the transactions is subject to a number of conditions, including TSX Venture Exchange acceptance and disinterested shareholder approval. The transactions cannot close until these and other required approvals are obtained. There can be no assurances that the transactions will be completed as proposed or at all.

Investors are cautioned that, except as disclosed in the management information circular describing the transactions, any information released or received with respect to the transactions may not be accurate or complete and should not be relied upon. Trading in the securities of G4G should be considered highly speculative.

The TSX Venture Exchange has in no way passed upon the merits of the transaction and has neither approved nor disapproved the contents of this press release.

About G4G Resources Ltd.

G4G Resources Ltd. is a Canadian-based mineral exploration and development company focused on a number of resource projects, including geothermal power, iron sands and alternative fuels.

Forward-Looking Statement

This document may contain or refer to forward-looking information based on current expectations, including, but not limited to timing of mineral resource estimates, future exploration or project development programs and the impact on the Company of these events. Forward-looking information is subject to significant risks and uncertainties, as actual results may differ materially from forecasted results. Forward-looking information is provided as of the date hereof and we assume no responsibility to update or revise them to reflect new events or circumstances. For a detailed list of risks and uncertainties, as it relates to G4G Resources Ltd., please refer to the Company's 2008 Annual Report filed with SEDAR on April 23, 2009.

Neither the 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.

For more information, please contact
G4G Resources Ltd.
Basil Botha
President & CEO
604-602-9868
604-602-9867 (FAX)
ir@g4gresources.com
www.g4gresources.com

For more information on Mining in Argentina, active companies, projects and operating mines, statistics and much more, please visit our website: http://www.argentinamining.com/