Argentex Drills 4.0 Meters of 8.64 g/t Au and 2,469.3 g/t Ag Within 17.0 Meters of 3.14 g/t Au and 761.1 g/t Ag at Pinguino

Marta Este Vein Reveals Additional High-Grade Gold and Silver Mineralization in Shallow Drilling

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 15, 2011) - Argentex Mining Corporation ("Argentex" or the "Company") (TSX VENTURE:ATX)(OTCBB:AGXMF) is pleased to release additional drill results from its 2011 exploration program at the Pinguino project, located in Santa Cruz province, Argentina. The program consisted of 19,704 meters of drilling in 206 holes. To date, the Company has received analytical results from 14,951 meters of drilling from 168 holes, with approximately 18 % of holes remaining to be processed in the lab.

Results below are from the most recent 14 holes from the Pinguino property. All of these holes are located on the Marta Este vein within the larger Marta Vein system. (A map of drill hole collars is available on the Company's web site at www.argentexmining.com).




Ken Hicks, President of Argentex, commented "The combination of a high grade silver and gold core within a larger mineralized interval reaching up to tens of meters in width suggests a very strong mineralized system located at or near the surface. The Marta vein system consists (from North to South) of the Marta Noroeste, the Marta Este-Marta Oeste, and the Marta Centro veins and represents a mineralized strike length of 3,000 plus meters. We believe that these near-surface high-grade silver and gold discoveries at Pinguino will play a key role in enhancing the upcoming resource update."

About Pinguino

Argentex's 10,000-hectare advanced silver and gold exploration Pinguino project is located in Argentina's Patagonia region, within the Deseado Massif of Santa Cruz province. The Deseado Massif is an active region of mining with four precious metal mines currently in production, and includes multiple active advanced and early stage exploration projects.

Pinguino is easily accessible, situated approximately 400 meters above sea level in low-relief topography. An existing system of all-weather roads provides year-round access to the property. Argentex believes that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource.

To date the Company has completed over 56,000 meters of drilling in over 500 holes on 19 veins. More than 50 individual vein segments have been identified to date, comprising more than 75 line-kilometers of strike length.

Quality Assurance

Samples selected for analysis are sent to Acme Analytical Laboratories' sample preparation lab in Mendoza, Argentina. From there, sample pulps are sent to Santiago, Chile for fire assay gold analysis and to Vancouver, Canada for Group 1DX multi-element MS-ICP analysis. Samples with over-limit zinc, lead, silver and/or copper are reanalyzed using an ore-grade high detection limit 7AR analysis, also conducted in Vancouver. Acme Analytical Laboratories is an accredited ISO 9000:2001 full-service commercial laboratory with its head office located in Vancouver. Referee analyses will be carried out by Alex Stewart (assayers) Argentina S.A. in Mendoza, Argentina. Argentex, Acme and Alex Stewart all maintain comprehensive and independent Quality Control/Quality Assurance programs.

Exploration on the Pinguino property is being conducted under the supervision of Mr. Kenneth Hicks, P.Geo. Argentex's President and a "Qualified Person" (QP) as defined by Canada's National Instrument 43-101. Mr. Hicks is not considered "independent" of the issuer as he is part of Company management.

About Argentex

Argentex Mining Corporation is an exploration company focused on the discovery of silver, gold and polymetallic deposits on its advanced exploration project portfolio in the Patagonia region of southern Argentina. In total, Argentex owns 100% of the mineral rights to more than 35 properties located within approximately 307,981 acres (124,636 hectares) of highly prospective land located in the Santa Cruz and Rio Negro provinces.

Shares of Argentex common stock trade under the symbol ATX on the TSX Venture Exchange and under the symbol AGXMF on the OTCBB.

On behalf of Argentex Mining Corporation:

Ken E. Hicks, President

Statements in this news release that are not historical facts are forward-looking statements that are subject to risks and uncertainties. Words such as "expects", "intends", "plans", "may", "could", "should", "anticipates", "likely", "believes" and words of similar import also identify forward-looking statements. Forward-looking statements in this news release include statements that the combination of a high grade silver and gold core within a larger mineralized interval reaching up to tens of meters in width suggests a very strong mineralized system located at or near the surface, its belief that these near-surface high-grade silver and gold discoveries at Pinguino will play a key role in the upcoming resource update, and that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource. Actual results may differ materially from those currently anticipated due to a number of factors beyond the Company's control. These risks and uncertainties include, among other things, competition for qualified personnel and risks that are inherent in Argentex's operations including the risks that the Company may not find any minerals in commercially feasible quantity or raise enough money to fund its exploration plans. These and other risks are described in the Company's Annual Report on Form 10-K and other public disclosure documents filed on the EDGAR website maintained by the Securities and Exchange Commission and the SEDAR website maintained by the Canadian Securities Administrators.

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.

Contact Information



Argentex Mining Corporation
Peter A. Ball
Executive Vice President Corporate Development
604-568-2496 (ext. 103) or 1-888-227-5285 (ext. 103)
604-568-1540 (FAX)
peter@argentexmining.com

www.argentexmining.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/

Argentex Announces Closing of Over-Allotment Option in Connection with its C$10,005,000 Bought-Deal Financing

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 15, 2011) - Argentex Mining Corporation ("Argentex" or the "Company") (TSX VENTURE:ATX)(OTCBB:AGXMF) is pleased to announce the closing of the over-allotment option granted to a syndicate of underwriters led by GMP Securities L.P. and including Haywood Securities Inc., Byron Capital Markets Ltd. and Casimir Capital Ltd. (collectively, the "Underwriters"), in connection with a "bought-deal" offering of 8,700,000 units (the "Units") which closed August 19, 2011.

Argentex has issued to the Underwriters an additional 652,500 common share purchase warrants (each an "Additional Warrant") at a price of C$0.082 per Additional Warrant for aggregate gross proceeds of C$53,505. Each Additional Warrant entitles the holder to purchase one common share in the capital of Argentex for C$1.60 at any time until 5:00 p.m. (Vancouver time) on August 19, 2013.

Argentex has paid to the Underwriters a cash commission equal to six percent of the additional gross proceeds raised pursuant to the exercise of the Over-Allotment Option. No additional broker warrants were issued to the Underwriters.

As with the Units, the Additional Warrants were offered by way of a short form prospectus filed in all of the Provinces of Canada, other than Quebec. The Additional Warrants were not registered under the U.S. Securities Act of 1933, as amended (the "1933 Act"), and no Additional Warrants were offered or sold in the United States or to any U.S. Persons (as that term is defined in Rule 902 of Regulation S, promulgated under the 1933 Act).

The Company plans to use the net proceeds for general working capital and corporate purposes.

About Argentex:

Argentex Mining Corporation is an exploration company focused on the discovery of silver, gold and polymetallic deposits on its advanced exploration project portfolio in the Patagonia region of southern Argentina. In total, Argentex owns 100% of the mineral rights to more than 35 properties located within approximately 307,981 acres (124,636 hectares) of highly prospective land located in the Santa Cruz and Rio Negro provinces.

Shares of Argentex common stock trade under the symbol ATX on the TSX Venture Exchange and under the symbol AGXMF on the OTCBB.

On behalf of Argentex Mining Corporation:

Ken E. Hicks, President

Statements in this news release that are not historical facts are forward-looking statements that are subject to risks and uncertainties. Words such as "expects", "intends", "plans", "may", "could", "should", "anticipates", "likely", "believes" and words of similar import also identify forward-looking statements. Forward-looking statements in this news release include those concerning Argentex's planned use of the net proceeds for working capital and for general corporate purposes. Actual results may differ materially from those currently anticipated due to a number of factors beyond the Company's control. These risks and uncertainties include, among other things, market factors and risks that are inherent in Argentex's operations including the risk that the Company may not find any minerals in commercially feasible quantity or raise funds sufficient to prosecute its exploration plans. These and other risks are described in the Company's final short form prospectus filed in connection with the Offering, the Company's Annual Report on Form 10-K and other filings with the Securities and Exchange Commission, which can be found on SEDAR.

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.

Contact Information



Argentex Mining Corporation
Peter A. Ball
Executive Vice President Corporate Development
604-568-2496 (ext. 103) or 1-888-227-5285 (ext. 103)
604-568-1540 (FAX)
peter@argentexmining.com
www.argentexmining.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 Completes Purchase of Key San Roque Claims

TORONTO, ONTARIO--(Marketwire - Sept. 14, 2011) - Minsud Resources Corp. (TSX VENTURE:MSR) ("Minsud" or the "Company") is pleased to announce results from Phase I drilling program at the Brechas Vacas property within Chita Valley Project in Argentina strategically located in the world-class El Indio mining district of Chile and Argentina where the Pascua-Lama and Veladero mines (Barrick) and the Del Carmen project (Malbex Resources) are located.

The Chinchillones target is silver (±Au) and base metals mineralized corridor (system of sheeted veins) striking NE hosted in Upper Carboniferous sandstones and shales. Within the northernmost part of the corridor drill hole ChS1104 intercepted 72.0 g/t silver and 0.23 g/t gold over 13.0 m and 393.0 g/t silver and 0.44 g/t gold over 1 meter confirming the continuity up to 220 m depth of a mineralized corridor previously found by surface trenching and drill hole MSA08C (see section on Exhibit I and location map on Exhibit II) over an area of 300 m long by 30 m wide. The veins are composed of crystalline, vuggy quartz often with comb-like structures infilled with sulphides and in some cases the vein structures are wider than 10 m with the individual veins three to four cm wide (locally up to 80 cm). Those thin veins were intersected in Chs1101 grading 105.0 g/t Ag, 0.18 g/t Au, 1.34 % Cu, 0.34% Pb, 1.56% Zn over 2 meters,, Ch1103 intersected 79.0 g/t Ag, 0.31 g/t Au, 0.13 % Cu, 6.71 % Pb, 20.45% Zn over 1 meter and CHS1105 intersected 136.0 g/t Ag, 0.40 g/t Au, 2.07 % Pb, 6.96 % Zn over 2 meters.




Roberto Milanese, Minera Sud Argentina S.A. VP Exploration said "it is remarkable the continuity of the Ag + Au + Base metals mineralization within the corridor, remaining open along strike and at depth, warranting further drilling."

Mr. Carlos Massa, President and CEO said "we are pleased to report that given this promising results Minera Sud Argentina S.A (MSA), has already exercised its option to buy the 50% of the Brechas Vacas´s mining rights for the amount of USD 210,000. The payment will be effective concurrently with the transfer of 100% mining rights to a trust to be designated by MSA and the assignment of 50% of the beneficial rights to MSA, Minsud wholly owned subsidiary, within the next 90 days."

Mr. C. Gustavo Fernandez, Professional Geoscientist in the Province of Ontario, is the Qualified Person as defined by NI 43-101. Mr. Fernandez has read and approved the contents of this release.

To view Exhibit I: Section please visit the following link:

http://media3.marketwire.com/docs/Minsud.jpg.

To view Exhibit II: Drilling Program Targets Phase I please visit the following link:

http://media3.marketwire.com/docs/minsud%202.jpg.

About Minsud Resources Corp.:

Minsud is a mineral exploration company focused on exploring its flagship Chita Valley project, primarily for gold, silver and copper in San Juan Province, Argentina.

Additionally, the Company holds a portfolio of approximately 75,000 ha of 100% owned exploration properties in Patagonia. Most of the key properties held by the Company are located in mining friendly provinces like San Juan and Santa Cruz, Argentina.

Quality Assurance/Quality Control: Drill core samples were submitted to Alex Stewart (Assayers), Argentina S.A. an ISO 9000-2000 accredited laboratories located in Mendoza, Argentina. Gold and silver results were determined using standard fire assay techniques on a 50 gram sample with a gravimetric finish for gold and silver. MINSUD's QA/QC program includes the insertion of blanks, standards and duplicates into the sample stream for Chita drill holes.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION: This news release includes certain information that may constitute "forward-looking information" under applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, statements about strategic plans, spending commitments, future operations, results of exploration, anticipated financial results, future work programs, capital expenditures and objectives. Forward-looking information is necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking information, including the risks identified in the Company's TSXV Filing Statement dated under the heading "Risk Factors". 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 information. Accordingly, readers should not place undue reliance on forward-looking information. All forward-looking information contained in this press release is given as of the date hereof and is based upon the opinions and estimates of management and information available to management as at the date hereof. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by law.

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.

Contact Information



Minsud Resources Corp.
Carlos Massa
President and Chief Executive Officer
+54-11-4328-4067
cmassa@minsud.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/

Cascadero Copper Corporation: Non-Brokered Private Placement Announced

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 13, 2011) - Cascadero Copper (TSX VENTURE:CCD) (the "Company") announces a non-brokered Private Placement of 6,000,000 Units at $0.18 per Unit. One Unit consists of one Cascadero Copper common share and one share purchase warrant. One warrant plus $0.25 cents enables the bearer to purchase one common share of the Company for a period of up to 36-months. The warrant is transferrable and is subject to an Accelerated Exercise Clause. It is expected that Cascadero insiders will subscribe for up to 25% of the offering, which is the insiders approximate equity ownership of the Company. The Company will apply for a Supplemental Listing and, subject to TSX.V approval the warrants will be listed for trading on the TSX Venture exchange. Finder fees are payable.

Use of Proceeds is to continue the exploration of the 50% owned Pancho Arias Mineral District in north western Argentina. The funds will be used to drill test two outstanding Cu-Au-Mo porphyries and one high-grade gold system.

* Pancho Arias (2,800m) is a porphyry prospect with historic drill holes that have Cu-Mo values from surface to end of hole. Seven of the ten 1973-4 drill holes outlined a Cu-Mo mineralized corridor that is approximately 900 metres wide and 1,300 metres along strike and is open. The core was not assayed for gold or silver. Pancho Arias outcrops over a large area. Recent geophysics identified a significant chargeability anomaly that is 3,000 metres in diameter at 300 metres below the surface profile of the outcrops.

* Incahuasi (2,000m) is another large-scale porphyry system. A recent geophysical survey identified a near surface chargeability anomaly that is 4,400 metres east west by 1,500 metres north south. The property has no history of drilling. Incahuasi is believed to be an apophysis of the same Miocene magmatic chamber, which is common to Pancho Arias and Las Burras. Las Burras is new Cu-Mo-Au porphyry discovered by Cascadero in June 2011.

* Santa Rosa (1,200m) a high-sulphidation high-grade gold bearing zone with an array of veins over a 2,000 metre by 2,000 metre area. The property adjoins Pancho Arias to the south, west and north. It is believed the source of the gold mineralization is the Pancho Arias porphyry.

The Pancho Arias District has potential to host large tonnage of Cu-Mo-Au mineralization. Three drill rigs are planned as the Company intends to complete the 6,000 metre program by Dec 31-11.

ABOUT CASCADERO COPPER

Cascadero Copper is an integrated prospecting and mineral exploration business. The Company has offices in North Vancouver, BC, Sudbury, Ontario and Salta City in the province of Salta, Argentina. The Company generates, acquires and explores mineral properties. The Company has several copper-gold porphyry prospects in the Toodoggone region of British Columbia, a 100% interest in 22 volcanic and intrusive hosted gold properties in the Sudbury, Swayze and Timmins camps of Ontario and holds a 50% interest in a 46-property portfolio in north western Argentina. Exploration is currently active in Ontario and Argentina.

In July 2011, Gold Fields Ltd completed a 7-core hole program totaling 2,448-metres on Cascadero's 100% owned MEX copper-gold porphyry in British Columbia. Assays are pending.

Cascadero's commodity focus is gold, silver and base metals, which are hosted in large-scale mineral systems.

In 2011 and 2012, Cascadero and Salta plan to drill test three copper-gold porphyry systems, four sediment hosted gold and silver-rich polymetallic systems and two sediment hosted gold-silver showings.

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

Contact Information



Cascadero Copper Corp.
Bill McWilliam
Chief Executive Officer
Office = 604-924-5504 or Cell = 604-999-0391
Bill@Cascadero.com
www.cascadero.com

AJF Consultants:
Allan or Janice Feldman
Office = 604-948-9663 or Cell = 604-377-2942

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/

Malbex Releases First Resource Estimate for Rojo Grande Gold-Silver Deposit

TORONTO, ONTARIO--(Marketwire - Sept. 12, 2011) - Malbex Resources Inc. (TSX VENTURE:MBG) today announced the first National Instrument (NI) 43-101-compliant, inferred mineral resource estimate for the Rojo Grande zone at its Del Carmen Norte high-sulphidation gold-silver project in San Juan, Argentina. The in-pit, inferred resource is 25.4 million tonnes of oxide material grading 1.00 g/t gold and 13.3 g/t silver for 816,600 ounces of contained gold and 10.9 million ounces of contained silver, at a lower average gold equivalent cutoff grade of 0.3 g/t. Drilling in the coming field season will aim to extend and expand the deposit, which remains open to the southwest. Drilling will also target areas within the modelled pit that have not yet been tested and are currently assigned as waste.

The table below summarises the inferred in-pit mineral resource estimate:





(1) Mineral resources which are not mineral reserves do not have demonstrated economic viability. The estimate of mineral resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues. (2) The quantity and grade of reported inferred resources in this estimation are conceptual in nature and there has been insufficient exploration to define these inferred resources as an indicated or measured mineral resource. It is uncertain if further exploration will result in upgrading them to an indicated or measured mineral resource category. (3) The 0.3 g/t gold equivalent cutoff grade was derived from an assumed open pit/heap leach operation with recoveries of 70% for gold and 40% for silver, a mining cost of US$1.50/tonne for ore and $1.40/tonne waste, process cost of US$3.50/tonne and general & administrative costs of US$2.50/tonne. The costs were derived from similar operations and the recoveries from initial metallurgical testwork. Assumed prices of $1,125/oz for gold and $20/oz for silver, based on 3-year trailing averages, were also employed.

"We're very pleased with this first-ever resource estimate for our flagship Del Carmen project," said Tim Warman, President and CEO. "The near-surface, oxide mineralization at Rojo Grande occupies only one small area within the much larger Del Carmen Norte alteration system, and the deposit remains open to the southwest. This season's field program will aim to expand Rojo Grande and test additional targets via 15,000 metres of drilling as well as generate new targets using geophysical surveying to better identify favourable alteration. Sampling for the second phase of metallurgical test work on Rojo Grande will also commence shortly."

Notes on the methodology of estimation of the inferred resource:

* The inferred resource estimate was carried out by Micon International Limited (Micon).
* The database comprised a total of 23 diamond drill holes, 4,185 metres of mainly HQ drilling (lesser amounts of PQ and NQ) and 3,446 gold and silver assays.
* An interpreted mineralised envelope was modeled into a wireframed solid in Gemcom, Approximate dimensions of the envelope were 750 metres in length (northeast-southwest), 80 to 200 metres in width (northwest-southeast), and up to 280 metres in vertical extent.
* Estimates are based on a parent cell dimension of 20 metres east, 20 metres north and 5 metres vertically.
* Grade interpolation was based on 5.0 metre composites cut to a maximum of 12.6 g/t gold and 161 g/t silver.
* Tonnage estimates are based on 71 bulk density measurements carried out by Malbex which were interpolated into the mineralized domain of the block model. Bulk density values for the Rojo Grande mineralised rock ranged from 1.68 to 2.67 tonnes/m3. The incompetent nature of certain zones of powdery quartz-alunite alteration made it difficult to obtain reliable density measurements for a small portion of the mineralized envelope. Due to this rock condition, and after a statistical analysis of the frequency of density results, a low-value outlier population was identified and all density measurements less than 2 tonnes/m3 were not used. All waste blocks and a small volume that did not get an interpolated density value were assigned the average density of 2.32 tonnes/m3.
* The resource at a 1.00 g/t gold grade was reported within a preliminary conceptual open-pit mining envelope with the purpose of delineating mineralization with a reasonable prospect of economic extraction. The Whittle open pit model was constructed using a gold price of US$1,125/oz, and heap leach gold recoveries of 70%. The resulting, unoptimized pit has a strip ratio of 2.09:1.

The mineral resources in this press release were estimated using the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Standards on Mineral Resources and Reserves, Definitions and Guidelines prepared by the CIM Standing Committee on Reserve Definitions and adopted by CIM Council December 11, 2005.

Messer's. B. Terrence Hennessey, P.Geo., and Richard Gowans, P.Eng., of Micon will be the authors of an NI 43-101-compliant Technical Report on the Mineral Resource Estimate for the Rojo Grande deposit, to be filed within 45 days of this news release. They are Qualified Persons in accordance with NI 43-101, and are responsible for the information presented in this news release. Mr. Hennessey is independent of Malbex as defined by NI 43-101.

Metallurgy

Malbex has previously (PR of January 20, 2011) reported that results from preliminary metallurgical testing (bottle roll) show average gold recoveries of 76.5% for five Del Carmen Norte samples (three from Rojo Grande, two from Naciente Quebrada Pedregosa target). The above quoted recoveries are for material crushed to 6.3 millimetres (mm). Four of five 6.3 mm samples range from 78.3% to 83.1% gold recovery while the fifth sample showed 61.4% recovery. Overall, the test results indicate good potential for heap leach cyanidation treatment and for whole ore milling/cyanidation treatment of the materials represented by the five composite samples. Silver recoveries range from 15% to 65% for those samples with detectable silver (four of five) and were generally higher for milled compared to crushed material. Importantly, cyanide consumption was low with a reported average for all samples of 0.16 kg/t.

Sample selection and collection for follow-up metallurgical testing is currently underway. This next round of testing will involve several column leach tests to evaluate the amenability, feed size sensitivity and ore variability of Rojo Grande ores to heap leaching. The testing will also include additional bottle roll tests, petrographic characterization (gold deportment), load and permeability testing and evaluation of the acid generating ability of the leached residues.

Further information on the Del Carmen project, including maps, sections and a complete assay table, can be accessed at www.malbex.ca/Projects/Del_Carmen.

Mr. B. Terrence Hennessey, P.Geo., of Micon is a Professional Geoscientist in the Province of Ontario, and is the Qualified Person as defined by NI 43-101 responsible for the technical information presented in this news release. Dr. Peter Stewart, P.Geo., is the Qualified Person responsible for the conduct of Malbex's exploration program.

Technical information

Diamond drill hole samples consist of core that is sawn in half by electric saw on site. Core samples are sealed in new plastic bags, which are inserted into rice sacks for transport by Malbex personal or commercial trucking service to ALS Global prep lab in Mendoza. All samples are crushed and pulped and powders sent by ALS to one of their laboratories (typically La Serena, Chile or North Vancouver, BC). Fire assay for gold is conducted on 30 gram (g) pulps with atomic absorption finish. Over limits (>10 g/t gold) are fire assayed with gravimetric finish. In addition, all samples receive multi-element analysis including silver by ICP after aqua regia digestion and mercury by cold vapour atomic absorption.

Malbex's quality assurance-quality control (QA-QC) program consists of the insertion in every 20 samples of at least one certified standard of known gold content, one blank (sample known to consist of very low levels of gold to ensure adequate cleaning of the sample preparation equipment between samples) and one field duplicate. Samples of significant drill intercepts will be sent to two additional independent laboratories to verify gold and silver analyses when necessary. Metallic screen fire analyses for gold will also be run regularly on discovered mineralization as an additional QA-QC check. The half core remaining after sampling is stored in a Malbex-run facility in San Juan for verification and reference purposes.

About Malbex

Malbex Resources Inc. is a gold exploration company led by experienced management and directors with projects in Argentina and Peru. In April 2010, Malbex made a near-surface, gold-silver oxide discovery at Del Carmen, its lead project in Argentina. Released in September 2011, the first-ever National Instrument 43-101-compliant, inferred mineral resource estimate for the Rojo Grande zone at Del Carmen measured 25.4 million tonnes grading 1.00 g/t gold and 13.3 g/t silver for 816,600 ounces of contained gold and 10.9 million ounces of contained silver. The Del Carmen project is located in the El Indio Gold Belt, which contains more than 35 million ounces of gold in current reserves and past production, including Barrick's Veladero mine and Pascua-Lama project. For more information, please visit www.malbex.ca.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION: This news release includes certain information that may constitute "forward-looking information" under applicable Canadian securities legislation. Forward-looking information includes, but is not limited to, statements about strategic plans, spending commitments, future operations, results of exploration, anticipated financial results, future work programs, capital expenditures and objectives. Forward-looking information is necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking information, including the risks identified in the Company's annual information form under the heading "Risk Factors". 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 information. Accordingly, readers should not place undue reliance on forward-looking information. All forward-looking information contained in this press release is given as of the date hereof and is based upon the opinions and estimates of management and information available to management as at the date hereof. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by law.

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.

Contact Information



Malbex Resources Inc.
Tim Warman
President and Chief Executive Officer

(416) 628-0215
ir@malbex.ca

Malbex Resources Inc.
Marla Gale
VP Investor Relations
(416) 628-0215
ir@malbex.ca
www.malbex.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/

Cardero Options Organullo Gold Project, Northwest Argentina, to Artha Resources Corporation

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 12, 2011) - Cardero Resources Corp. ("Cardero" or the "Company") (TSX:CDU)(NYSE Amex:CDY)(FRANKFURT:CR5) is pleased to announce that the Company has optioned its Organullo Gold project to Artha Resources Corporation ("Artha"), whereby Artha can earn an undivided fifty-five (55%) percent working interest in the Organullo Project, and thereafter form a Joint Venture with Cardero Argentina S.A., a wholly owned subsidiary of Cardero.

Joint venturing of the Organullo Project is part of Cardero's strategy to option-out all non-core assets, allowing the Company to focus on development of its coal and iron ore projects. This includes the Carbon Creek deposit in north-eastern British Columbia controlled by Cardero, where the 2011 summer field season and collection of feasibility-level engineering and environmental data is in progress.

Details of Agreement with Artha

The Option Agreement with Artha has the following terms and is subject to TSX Venture Exchange (the "Exchange") acceptance on behalf of Artha. Artha has the option (the "Option") to earn an undivided 55% right, title and working interest in and to the Organullo property by incurring an aggregate of USD 1,500,000 in exploration expenditures over four years (USD 250,000 by September 9, 2012) and by issuing an aggregate of 350,000 common shares in the capital of Artha, also over three (3) years (50,000 shares within 15 days of Exchange acceptance). Upon Artha having earned its initial 55% interest, Cardero has a right to maintain its 45% interest through pro rata funding of exploration work going forward. Alternatively, Cardero may choose to be diluted down to a minimum of 10%, at which point its interest will be converted to a 2% NSR royalty.

The Organullo Gold Project

The Organullo project is an relatively advanced epithermal gold-silver project located in northern Salta Province, north-west Argentina, with excellent potential for both high sulphidation type epithermal high grade gold and silver as well as bulk tonnage lower grade gold and silver mineralization. The Organullo project includes several drill-ready targets, with a focus on delineating both large bulk tonnage potential as well as higher grade zones in dilatant structures. The property delivers an advanced project into Artha's highly prospective portfolio in the under explored NW of Argentina, which includes the Pirquitas project, also held under option from Cardero. Artha has advised that it plans to commence drilling on the project in late 2011.

Qualified Person and Quality Control/Quality Assurance

EurGeol Keith J. Henderson, PGeo., Cardero's VP Exploration and a qualified person as defined by National Instrument 43-101, has supervised the preparation of the scientific and technical information that forms the basis for this news release and has reviewed and approved the disclosure herein. Mr. Henderson is not independent of the Company, as he is an officer and shareholder.

About Cardero Resource Corp.

In recent years, Cardero's focus has increasingly been on iron ore and iron-making technologies. The sale of Cardero's wholly-owned Pampa de Pongo iron deposit in early 2010 for USD100 million cash represented an early success in the iron market. More recently, in keeping with bulk-commodity focus, Cardero has acquired, through the acquisition of Coalhunter Mining Corporation, a 75% interest in the Carbon Creek Metallurgical Coal Deposit in north-eastern British Columbia. Cardero continues to hold iron ore resources at the Iron Sands Project in Peru and iron-titanium interests in Minnesota, USA. The common shares of the Company are currently listed on the Toronto Stock Exchange (symbol CDU), the NYSE-Amex (symbol CDY) and the Frankfurt Stock Exchange (symbol CR5). For further details on the Company readers are referred to the Company's web site (www.cardero.com), Canadian regulatory filings on SEDAR at www.sedar.com and United States regulatory filings on EDGAR at www.sec.gov.

On Behalf of the Board of Directors of CARDERO RESOURCE CORP.

Hendrik van Alphen, Chief Executive Officer

NR11-12

This press release contains forward-looking statements and forward-looking information (collectively, "forward-looking statements") within the meaning of applicable Canadian and US securities legislation. All statements, other than statements of historical fact, included herein including, without limitation, statements regarding the anticipated content, commencement and cost of exploration programs, anticipated exploration program results, the discovery and delineation of mineral deposits/resources/reserves, business and financing plans and business trends, are forward-looking statements. In addition, information with respect to the proposed activities of Artha on the Organullo property has been provided by Artha (the optionee and operator of the Organullo joint venture) and, as such activities are not within the control of the Company, the Company takes no responsibility for the accuracy of such statements. Although the Company believes that such statements are reasonable, it can give no assurance that such expectations will prove to be correct. Forward-looking statements are typically identified by words such as: believe, expect, anticipate, intend, estimate, postulate and similar expressions, or are those, which, by their nature, refer to future events. The Company cautions investors that any forward-looking statements by the Company or any of its optionees or joint venture partners are not guarantees of future results or performance, and that actual results may differ materially from those in forward looking statements as a result of various factors, including, but not limited to, variations in the nature, quality and quantity of any mineral deposits that may be located, variations in the market for, and pricing of, any mineral products the Company or its joint venture partners may produce or plan to produce, the inability of the Company or any of its joint venture partners to obtain any necessary permits, consents or authorizations required for its or their activities, the inability of the Company or any of its joint venture partners to produce minerals from their properties successfully or profitably, to continue its projected growth, to raise the necessary capital or to be fully able to implement its business strategies, and other risks and uncertainties disclosed in the Company's 2011 Annual Information Form filed with certain securities commissions in Canada and the Company's annual report on Form 40-F filed with the United States Securities and Exchange Commission (the "SEC"), and other information released by the Company and filed with the appropriate regulatory agencies. All of the Company's Canadian public disclosure filings may be accessed via www.sedar.com and its United States public disclosure filings may be accessed via www.sec.gov, and readers are urged to review these materials, including the technical reports filed with respect to the Company's mineral properties.

This press release is not, and is not to be construed in any way as, an offer to buy or sell securities in the United States.

Contact Information



Cardero Resource Corp.
Nancy Curry

Manager Corporate Communications & Investor Relations
1 (888) 770-7488 (604) 408-7488
(604) 408-7499 (FAX)
info@cardero.com
www.cardero.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/

Argentex Drills 9.00 Meters of 2.63 g/t Au and 682.8 g/t Ag at Marta Noroeste Vein at Pinguino Project

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 12, 2011) - Argentex Mining Corporation ("Argentex" or the "Company") (TSX VENTURE:ATX)(OTCBB:AGXMF) is pleased to release additional drill results from its 2011 exploration program at the Pinguino project, located in the Santa Cruz province of Argentina. The program consisted of 19,704 meters of drilling in 206 holes. To date, the Company has received sample results from 13,943 meters of drilling from 154 holes, with approximately 25 % of holes remaining to be processed in the lab.

Results below are from the most recent 21 holes at Pinguino. All of these holes are located on the Marta Noroeste vein. A map of drill hole collars is available on the Company's web site at www.argentexmining.com).




"The Marta Noroeste vein system is approximately 2,600 meters in length and is immediately northwest of two other mineralized veins named Marta Este and Marta Oeste. The vein, which is one of more than 50 veins identified to date, was drilled in the southernmost 1,500 meters of its estimated strike length, with an additional 1,100 meters remaining to be tested. Drilling results from Marta Noroeste continue to yield large mineralized intersections of high-grade gold and silver and will be included in our mineral resource update, which is expected to be completed in the fourth quarter of 2011. This mineralization is found at both shallow depths and deeper within the system, as evidenced by holes which tested down to depths approximately 200 meters below surface," commented Ken Hicks, President of Argentex. "The Marta Vein system continues to develop into a key area of high grade gold and silver discoveries at Pinguino."

About Pinguino

Argentex's 10,000-hectare Pinguino property is located in Argentina's Patagonia region, within the Deseado Massif of Santa Cruz province. The Deseado Massif is an active region of mining with four precious metal mines currently in production, and includes multiple active advanced and early stage exploration projects.

Pinguino is easily accessible, situated approximately 400 meters above sea level in low-relief topography. An existing system of all-weather roads provides year-round access to the property. Argentex believes that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource.

Quality Assurance

Samples selected for analysis are sent to Acme Analytical Laboratories' sample preparation lab in Mendoza, Argentina. From there, sample pulps are sent to Santiago, Chile for fire assay gold analysis and to Vancouver, Canada for Group 1DX multi-element MS-ICP analysis. Samples with over-limit zinc, lead, silver and/or copper are reanalyzed using an ore-grade high detection limit 7AR analysis, also conducted in Vancouver. Acme Analytical Laboratories is an accredited ISO 9000:2001 full-service commercial laboratory with its head office located in Vancouver. Referee analyses will be carried out by Alex Stewart (assayers) Argentina S.A. in Mendoza, Argentina. Argentex, Acme and Alex Stewart all maintain comprehensive and independent Quality Control/Quality Assurance programs.

Exploration on the Pinguino property is being conducted under the supervision of Mr. Kenneth Hicks, P.Geo. Argentex's President and a "Qualified Person" (QP) as defined by Canada's National Instrument 43-101. Mr. Hicks is not considered "independent" of the issuer as he is part of company management.

About Argentex

Argentex Mining Corporation is an exploration company focused on the discovery of silver, gold and polymetallic deposits on its advanced exploration project portfolio in the Patagonia region of southern Argentina. In total, Argentex owns 100% of the mineral rights to more than 35 properties located within approximately 307,981 acres (124,636 hectares) of highly prospective land located in the Santa Cruz and Rio Negro provinces.

Shares of Argentex common stock trade under the symbol ATX on the TSX Venture Exchange and under the symbol AGXMF on the OTCBB.

On behalf of Argentex Mining Corporation:

Ken E. Hicks, President

Statements in this news release that are not historical facts are forward-looking statements that are subject to risks and uncertainties. Words such as "expects", "intends", "plans", "may", "could", "should", "anticipates", "likely", "believes" and words of similar import also identify forward-looking statements. Forward-looking statements in this news release include statements such as drilling results from Marta Noroeste continue to yield large mineralized intersections of high-grade gold and silver and will be included in our mineral resource update, which is expected to be completed in the fourth quarter of 2011, and that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource. Actual results may differ materially from those currently anticipated due to a number of factors beyond the Company's control. These risks and uncertainties include, among other things, competition for qualified personnel and risks that are inherent in Argentex's operations including the risks that the Company may not find any minerals in commercially feasible quantity or raise enough money to fund its exploration plans. These and other risks are described in the Company's Annual Report on Form 10-K and other public disclosure documents filed on the EDGAR website maintained by the Securities and Exchange Commission and the SEDAR website maintained by the Canadian Securities Administrators.

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.

Contact Information



Argentex Mining Corporation
Peter A. Ball
Executive Vice President Corporate Development

604-568-2496 (ext. 103) or 1-888-227-5285 (ext. 103)
peter@argentexmining.com
www.argentexmining.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/

Artha Options Organullo Gold-Silver Property in Salta Province, Argentina From Cardero Resource Corp.

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 12, 2011) - Artha Resources Corporation (TSX VENTURE:AHC) ("Artha" or the "Company") is pleased to announce that the Company has entered into an Option Agreement to whereby it can earn an undivided fifty-five (55%) percent working interest in the interest of Cardero Argentina S.A. ("Cardero Argentina") in the tenures which make-up the Organullo Project, and thereafter form a Joint Venture with Cardero Argentina, a wholly owned subsidiary of Cardero Resource Corp. ("Cardero"). The Organullo project is a relatively advanced epithermal gold-silver project located in northern Salta Province NW Argentina with excellent potential for both high sulphidation type epithermal high grade gold and silver as well as bulk tonnage lower grade gold and silver mineralization (Maps 1 and 2).

Organullo Project Summary.

HIGHLIGHTS.

* a total of 1,580 surface rock samples collected by previous explorers from an area of approximately 8-kilometres by 8-kilometres average 0.25 g/t gold.
* 189 metres of 0.66 g/t gold and 186 metres of 0.50 g/t gold in historic drilling prior to Cardero.
* Cardero considered that historic exploration inadequately tested this large, pervasive gold-silver bearing system.
* Gold values from 361 rock samples collected by Cardero over 8 kilometres of strike on the 6100 ha property averaged 0.48 g/t gold and range from below detection to 29.7 g/t gold.
* Mapping and geochemical analyses conducted by Cardero defined a 2.1-kilometre by 800-metre zone of hydrothermal alteration indicative of both low- and high-sulphidation style epithermal gold deposits.
* Geophysical surveying conducted by Cardero characterized the historical Julio Verne Mine and identified similar targets over a 5-kilometre strike length.
* Broad zones of low grade gold mineralisation identified in Cardero diamond drilling included 445m at 0.15 g/t gold with primary targets still untested.

Artha considers the Organullo project to offer excellent drill ready targets with a focus on delineating both large bulk tonnage potential as well as higher grade zones in dilatant structures. The property delivers an exceptional and relatively advanced project into Artha's highly prospective portfolio in the under explored NW of Argentina. Drilling is planned to commence on the project in the December 2011 quarter.

A NI-43-101 Technical Report is being completed on the property as part of the Option Agreement with Cardero and is expected to be available shortly.

The Organullo property, owned by Cardero Resource Corp., is located in Salta province of Argentina approximately 20 kilometres due south of the village of San Antonio de Los Cobres and approximately 100km W-NW from the city of Salta. Access is easily attained by a network of roads through the central part of the property. The property was initially explored and mined on a small scale as the Julio Verne mine in the 1930's. Regional work on the property was conducted in the 1960's and 70's. In 1994-5 Triton Mining Corporation conducted a mapping, sampling, rock geochemistry and reverse circulation drill program. Newmont Overseas Exploration Ltd. performed a property evaluation in 1996. Northern Orion Explorations Ltd. performed a core drilling program in 1997 followed by a reverse circulation drilling program in 1999.

In 2002 Cardero acquired the property by staking and in 2005 performed a digital data compilation of information on the property and surrounding area.

The Organullo property is located in a visually anomalous area which owes its lighter colour to the argillic alteration extending 6 km north-south, parallel to the Organullo river valley. In addition, strong oxidation of pyrite has produced orange-brown gossan over significant areas of the clay alteration. The style of alteration, age of the various rock units, lithologies, structural complexity, mineralization and geochemistry are all permissive of epithermal style mineralization. Numerous mineral properties associated with magmatic and volcanic centres along regional structural features are documented in Chile and Argentina. Regionally the property lies along a major fault lineament, the northwest trending Calama-Olacapato-El Toro lineament, which is one of several NW lineaments which host magmatic and volcanic centres as well as major mineral deposits and mines, making the area an interesting target for exploration (Map 3).

Previous exploration by others at Organullo focused mainly on higher grade gold (+/-copper and bismuth) mineralization and little to no attention was paid to the bulk tonnage potential on the property. Records of historical exploration (from several operators) obtained by Cardero illustrate the significant gold endowment of the property - a total of 1,580 surface rock samples from an area of approximately 8-kilometres by 8-kilometres average 0.25 g/t gold (Map 4).

Cardero considered that historic exploration inadequately tested this large, pervasive gold-bearing system. The majority of the historic drilling (6,121 metres in 35 holes) was collared parallel to mineralized structures and hence either failed to test the principal structures and/or provided intersections which the Cardero believed may not be representative. In addition, recoveries were very poor (25-30%) due to loss of potentially mineralized clay rich zones and high groundwater saturation. Despite sub-optimal drill hole orientation and drill conditions, historical drill holes did define potentially economic bulk-tonnage style gold-silver mineralization.

Historical drill results from Organullo identified significant bulk-tonnage style gold mineralization, including up to 189 metres grading 0.66 g/t gold, Table 1. Results from mapping, geochemical and geophysical exploration in 2010 indicates potential for a large, bulk-tonnage gold system that warrants follow up drilling.

Table 1: Select Historical Drill Highlights
(*RC -- reverse circulation; **DDH -- diamond drill hole)




Exploration History.

The earliest recorded work in the area of the Organullo property comes from reports of small-scale production from the Julio Verne mine during the 1930's. Mining activity centered on 2 high-grade sub-parallel veins with concentrates reported to average 12.5% bismuth and 8.2% copper with gold ranging between 10-20 g/t. Early regional work was undertaken in the area by Fabricaciones Militares in 1962-72 in partnership with the United Nations, followed up by an IP survey and drilling by Cities Service Corporation. In 1994-1995 Triton Mining Corp. and Northern Orion Explorations, Ltd. jointly conducted a detailed surface sampling, mapping and prospecting campaign and completed a 17-hole, 3,295-metre RC drill program. This was followed with a 6 hole diamond drill program in 1997 and an additional 12-hole RC drill program in 1999 by Northern Orion. Cardero purchased the project in 2004, and conducted several reconnaissance exploration programs and detailed petrographic studies since that time and as well as 2,053 metres of diamond drilling.

Cardero's exploration programs included:

* Gold values from 361 rock samples collected over 8 kilometres of strike on the 6100 ha property average 0.48 g/t and range from below detection to 29.7 g/t.
* Mapping and geochemical analyses have defined a 2.1-kilometre by 800-metre zone of high-temperature hydrothermal alteration typical of both low- and high-sulphidation epithermal gold deposits.
* Geophysical surveying has characterized the historical Julio Verne Mine and identified similar targets over a 5-kilometre strike length.
* Geology and geochemical results consistent with the upper levels of a large magmatic porphyry-high sulphidation system have been highlighted. These type of systems host prolific gold mineralization elsewhere in the central Andes, such as in the Pascua - El Indio belt, and do not preclude the potential for a large Bajo de la Alumbrera or El Salvador-style porphyry deposit at depth.
* Drilling of 2,053 meters of diamond core in 8 holes.

Cardero completed an initial 2,053 metre, 8-hole diamond drill program to test an approximately 2.1-kilometre long by 800-metre wide north-south trending structural zone defined by the coincidence of significant historical drill intercepts (Table 1), gold-in-rock surface geochemistry, and variably developed advanced argillic (alunite+/-dickite+/-pyrophyllite) and silica alteration in the vicinity of the former Julio Verne mine (Figure 1). Results from this drilling are summarized in Table 2. A number of technical issues arose during Cardero's drilling program which resulted in the key targets still remaining untested.

Table 2 – Significant intersections in Cardero drilling 2010.




A 2053.5 m drill program on the Organullo Ridge and area proximal to the Julio Verne mine intersected silica and clay altered and faulted Puncoviscana sediments and Tertiary volcanic/intrusive rocks which returned values ranging from 0.96 ppm Au over 16.0 m and 0.14 ppm Au over 445.0 m. The drilling identified mineralization and alteration of a hydrothermal system which appears to be high sulphidation in style, with interpretation complicated by faulting.

Option Agreement Terms.

The Option Agreement between Cardero and has the following terms and is subject to TSX Venture Exchange (the "Exchange") approval. Artha has the sole and irrevocable right and option to earn an undivided fifty-five (55%) percent right, title and working interest in and to the property by:

1. incurring an aggregate of US$1.5 million in Expenditures (as defined in the Option Agreement), as follows:
1. US$250,000 on or before the day which is 1 year after the date of execution of the Option Agreement by Artha (the "Effective Date");
2. an additional US$550,0000 on or before the day which is 2 years after the Effective Date; and
3. an additional US$700,000 or before the day which is 3 years after the Effective Date.

Any excess in Expenditures incurred in any period may be carried forward against Expenditures due to be incurred in the next.

2. issuing a total of 350,000 voting common shares in the capital of Artha by way of the following tranches as follows:

i. 50,000 shares within 15 days after the Exchange's acceptance of the Option Agreement (the "Exchange Acceptance Date");
ii. 100,000 shares within 1 year after the Exchange Acceptance Date;
iii. 100,000 shares within 2 years after the Exchange Acceptance Date; and
iv. 100,000 shares within 3 years after the Exchange Acceptance Date.

3. otherwise complying with the terms and conditions of the Option Agreement during the currency of the Option.

With the exception of the obligation to incur $250,000 in Expenditures and issue 50,000 shares to Cardero pursuant to (a)(i) and (b)(i) above (which will become a binding obligation of Artha on the Exchange Acceptance Date), the remaining Expenditures and share issuances are optional.

This news release has been approved and reviewed by Charles Straw, B.Sc., who is a qualified person within the meaning of National Instrument 43-101.

Artha was founded by a team of mining industry professionals with a proven track record in project generation, exploration, mining and finance. Artha's principle exploration target adjoins Silver Standards Pirquitas Mine, one of the largest primary silver mines in the world located in the province of Jujuy in NW Argentina. Artha is one of the largest mineral explorers in this region with over 2,100 square kilometers of properties prospective for silver, gold, base metals and rare earths.

On Behalf of the Board of Directors,

Todd McMurray, President

Forwarding Looking Statement Disclaimer.

This news release includes certain forward-looking statements or information. All statements other than statements of historical fact included in this release, including, without limitation, statements regarding future plans and objectives of the Company are forward-looking statements that involve various certain risks and uncertainties. In certain cases, forward-looking statements can be identified by the use of words 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 statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company's plans or expectations include availability of capital and financing, general economic, market or business conditions, regulatory changes, timeliness of government or regulatory approvals, risks inherent in the mineral exploration and production industry, and other risks detailed herein and from time to time in the filings made by the Company with securities regulators, most of which filings are available at www.sedar.com. The Company disclaims any intention or obligation to revise or update such statements, whether as a result of new information, future events or otherwise, except as required under applicable securities laws.

Note: To view the maps associated with this release, please click the following link: http://media3.marketwire.com/docs/ahc0912.pdf.

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.

Contact Information



Artha Resources Corporation
Todd McMurray
President and Director
1 604 648 1530
todd@artharesources.com
www.artharesources.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/

Argentex Mining Corporation: Ivonne Vein Returns 3.30 Meters of 4.69 g/t Gold at Pinguino, Including 1.80 Meters of 8.30 g/t Gold

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 23, 2011) - Argentex Mining Corporation (TSX VENTURE:ATX)(OTCBB:AGXMF) ("Argentex" or the "Company") is pleased to release additional drill results from its recently completed 2011 exploration program at the Pinguino project, located in the Santa Cruz province of Argentina. The program consisted of 19,704 meters of drilling in 206 holes. To date, the Company has received results for 8,924 meters of drilling from 100 of the 206 holes, with approximately 51% of holes remaining to be processed in the lab.

Results below are from the most recent 5 holes from the Ivonne Norte vein and 1 hole from Ivonne Sur vein (a map of drill hole collars is available on the Company's web site at www.argentexmining.com):




*True widths are estimated to be 85-90% of the stated interval; ** Silver Eq is Silver Equivalent of gold and silver and based upon a price ratio of 43:1 gold to silver; "P" represents core holes, "PR" represents RC holes.

"Assay results from the drilling of the Ivonne vein continue to report multi-gram gold values. Ivonne Norte, which is a segment of the 2,300 meter Ivonne vein system, has returned encouraging silver and gold grades in the near-surface oxidized zones as well as at depths of approximately 200 meters below surface within the unoxidized primary mineralization," commented Ken Hicks, President of Argentex. "The exploration focus of the 2011 program was the discovery of new precious metal occurrences within the Pinguino vein system and we are pleased with the success reported to date."

About Pinguino

Argentex's 10,000-hectare Pinguino property is located in Argentina's Patagonia region, within the Deseado Massif of Santa Cruz province. The Deseado Massif is an active region of mining with four precious metal mines currently in production, and includes multiple active advanced and early stage exploration projects.

Pinguino is easily accessible, situated approximately 400 meters above sea level in low-relief topography. An existing system of all-weather roads provides year-round access to the property. Argentex believes that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource.

Quality Assurance

Samples selected for analysis are sent to Acme Analytical Laboratories' sample preparation lab in Mendoza, Argentina. From there, sample pulps are sent to Santiago, Chile for fire assay gold analysis and to Vancouver, Canada for Group 1DX multi-element MS-ICP analysis. Samples with over-limit zinc, lead, silver and/or copper are reanalyzed using an ore-grade high detection limit 7AR analysis, also conducted in Vancouver. Acme Analytical Laboratories is an accredited ISO 9000:2001 full-service commercial laboratory with its head office located in Vancouver. Referee analyses will be carried out by Alex Stewart (assayers) Argentina S.A. in Mendoza, Argentina. Argentex, Acme and Alex Stewart all maintain comprehensive and independent Quality Control/Quality Assurance programs.

Exploration on the Pinguino property is being conducted under the supervision of Mr. Kenneth Hicks, P.Geo., Argentex's President and a "Qualified Person" (QP) as defined by Canada's National Instrument 43-101.

About Argentex:

Argentex Mining Corporation is an exploration company focused on the discovery of silver, gold and polymetallic deposits on its advanced exploration project portfolio in the Patagonia region of southern Argentina. In total, Argentex owns 100% of the mineral rights to more than 35 properties located within approximately 307,981 acres (124,636 hectares) of highly prospective land located in the Santa Cruz and Rio Negro provinces.

Shares of Argentex common stock trade under the symbol ATX on the TSX Venture Exchange and under the symbol AGXMF on the OTCBB.

On behalf of Argentex Mining Corporation:

Ken E. Hicks, President

Statements in this news release that are not historical facts are forward-looking statements that are subject to risks and uncertainties. Words such as "expects", "intends", "plans", "may", "could", "should", "anticipates", "likely", "believes" and words of similar import also identify forward-looking statements. Forward-looking statements in this news release include statements about the Company's belief that recent high-grade precious metal discoveries within newly tested structures of the district scale vein system at Pinguino show potential for the development of a significant silver-gold resource. Actual results may differ materially from those currently anticipated due to a number of factors beyond the Company's control. These risks and uncertainties include, among other things, competition for qualified personnel and risks that are inherent in Argentex's operations including the risks that the Company may not find any minerals in commercially feasible quantity or raise enough money to fund its exploration plans. These and other risks are described in the Company's Annual Report on Form 10-K and other public disclosure documents filed on the EDGAR website maintained by the Securities and Exchange Commission and the SEDAR website maintained by the Canadian Securities Administrators.

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.

Contact Information



Argentex Mining Corporation
Peter A. Ball
Executive Vice President Corporate Development
604-568-2496 (ext. 103) or 1-888-227-5285 (ext. 103)
604-568-1540 (FAX)
peter@argentexmining.com
www.argentexmining.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/

Mariana Commences Fourth Drilling Programme at Las Calandrias Gold-Silver Project, Argentina

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 23, 2011) - Mariana Resources Ltd. (TSX:MRY)(AIM:MARL) ('Mariana' or 'the Company'), the AIM and TSX quoted exploration and development company focused in Argentina and Chile, announces that the fourth drilling programme at its 100% owned Las Calandrias Gold-Silver Project ('Las Calandrias'), in the prospective Santa Cruz gold district in southern Argentina (Figure 1) has commenced.

Overview

* Fourth drilling programme will comprise at least 10,000m with minimum of 5,000m in the first stage of a two stage programme.
* Testing seven new targets (Figure 2) at Las Calandrias, all outside the outlines of the Calandria Sur and La Calandria initial resources announced on 11 July 2011.
* Loma Verde and La Picasa targets cover a 200 to 300m x 500m area of prospective volcaniclastics adjacent to the Calandria Sur rhyolite dome. The areas coincide with a very strong gold lag anomaly 30-750 ppm Au.
o Volcaniclastic-hosted mineralisation consists of multiple sub-metre zones of quartz veins/veinlets, breccias and stockworks related to broad zones of silicification.
o Rock chip sampling in volcaniclastic-hosted mineralisation averaged 0.55 g/t Au (151 samples) with up to 0.5m @ 11 g/t Au.
o Best trench assays are 20m @ 1.0g/t Au (Loma Verde) and 20.8m @ 1.5g/t Au including 8.4m averaging 2.9g/t Au (La Picasa).
o A previous drill hole in this area intersected encouraging volcaniclastic-hosted gold mineralisation – CSD261 35.5m @ 1.8 g/t Au and 6 g/t Au, including a breccia with 1.2m @ 20.4 g/t Au and 81 g/t Ag.
o Twenty-six holes for 3,100m are planned over these two target areas in stage one.
* Vieja Herradura target covers a 200 x 250m area northwest of Calandria Sur with potential for extensions to the main breccia-hosted deposit and also high-grade mineralisation proximal to the andestite dyke swarms (CSD253 0.5m @ 141 g/t Au 237 g/t Ag) which may be a feeder zone for Calandria Sur.
* Other targets include extensions of the La Morena and La Calandria vein-breccias at Calandria Norte, the new El Clavo Vein Trend to the south-southwest of Calandria Norte, the Nido Este dome margin, and follow up drilling at the Nido Norte target.

Commenting today, Chairman John Horsburgh said, "The scale of our flagship Las Calandrias project continues to expand and a major breakthrough is the prospectivity of the volcaniclastics adjacent to the Calandria Sur dome-hosted gold-silver mineralisation. This is supported by encouraging results from lag sampling, mapping/rock chip sampling, trenching and limited previous drilling. Also, preliminary LeachWell tests indicate volcaniclastic-hosted sulphide mineralisation intersected to date is readily amenable to cyanide leaching. The recent work has opened up a very large target area close to Calandria Sur and, together with the new potentially high-grade targets, adds up to an exciting fourth drilling programme, the objective of which is to expand the recently established initial resource base."

Drilling Programme

A minimum 10,000m programme of diamond drilling is planned with the first stage of 5,000m underway. The rig will then be deployed at the Company's Sierra Blanca silver-gold project also in Santa Cruz Province in October 2011 before returning for the second stage of follow up and exploratory drilling of targets at Las Calandrias, referred to below, at the end of October/November 2011. Assay results from the first stage of drilling will have been received by this time and will enable targets to be prioritised for stage two of the drilling programme.

Loma Verde/La Picasa target areas

Lag sampling, mapping, trenching and the limited previous drilling indicate potential for volcaniclastics adjacent to the northeast and east flank of the Calandria Sur rhyolite dome to host significant gold-silver mineralisation. This extensive target area is a northwest trending zone 200 to 300m wide by 500m long, subdivided into Loma Verde in the southeast and La Picasa to the northwest (Figure 3).

Mineralisation consists of multiple sub-metre zones of quartz veins/veinlets, breccias and stockworks related to broad zones of silicification trending west-northwest and east-northeast with individual silicified zones up to 25m x 350m. Rock chip sampling returned 1m @ 3.9 g/t Au (Loma Verde) and 0.5 m @ 11 g/t Au (La Picasa).

The rock chip sampling was carried out within a 1,000 x 500m area of mostly volcaniclastic terrain coinciding with the +30 ppb Au contour of an extensive lag anomaly (Figure 4). Anomalous gold in rock chips corresponds with a series of sub-metre veins, quartz stockworks and breccias. The average of 151 rock chip samples taken was 0.55 g/t Au and a maximum of 11 g/t Au with 11% of samples above 1 g/t Au. Sample locations and assay ranges are shown in Figure 3.

Best trench assays are 20m @ 1.0g/t Au (Loma Verde) and 20.8m @ 1.5g/t Au including 8.4m averaging 2.9g/t Au (La Picasa).

Two out of the three holes previously drilled in this area intersected moderate to high grade gold mineralisation in the volcaniclastics adjacent to the rhyolite dome. Hole CSD261 from the last drilling campaign (received too late for inclusion in the initial resource), drilled 50m away from the dome margin intersected multiple sulfide rich veinlets hosted by volcaniclastics assaying 35.5m @ 1.8 g/t Au and 6 g/t Ag, with a high-grade breccia of 1.2 m @ 20.4 g/t Au and 81 g/t Ag.

Twenty-six holes for 3,100m are planned for these two target areas in the first stage (Figures 2 & 3).

Calandria Sur - La Vieja Herradura target area

The last drill results from the third campaign confirm the mineralisation is open to the north and northwest of the Calandria Sur dome, outside the initial resource area. Recent mapping and rock chip sampling have defined a new 200 x 250m target area along this covered northern margin of the Calandria Sur dome, previously considered low priority (Figure 3).

Intersections of high-grade gold mineralisation in the last campaign are associated with a northwest trending post-mineralisation andesite dyke swarm that may have intruded along pre-existing mineralising "feeders". These dykes continue southeast along the margin of the Calandria Sur dome and might be a vector for high-grade mineralisation. Holes CSD253 (0.5m @ 140.8 g/t Au and 237 g/t Ag) and CSD255 (0.5m @ 16.9 g/t Au and 183 g/t Ag) are examples of high grades proximal to the dykes (Figure 3).

Approximately 1,080m of drilling in seven holes in the first stage is planned to extend mineralisation to the north-west of Calandria Sur and to test for high-grade mineralisation (Figure 2 & 3).

Calandria Norte dome - La Morena Vein-breccia

Scout hole CND250 previously intersected 0.6m @ 68.1 g /t Au and 107g /t Ag in a vein-breccia from 59m within a broad stockwork intercept of 19.5m @ 3.3g /t Au and 8g /t Ag from 45m. The vein-breccia system has no surface expression and was discovered by drilling the southwest end of an Induced Polarisation ('IP') chargeability anomaly. Limited drilling indicates that La Morena vein-breccia mineralisation strikes north-northeast for 350m, dips steeply south-southeast and is open in all directions. Further drilling at La Morena will target extensions and also the possible intersection with the La Calandria Vein Zone at depth. A total of 2,100m of drilling has been planned to test La Morena and other Calandria Norte targets with four holes for 500m at La Morena in the first stage.

El Clavo Vein Trend

Mapping, trenching, and rock and lag sampling southwest of the Calandria Norte dome has discovered the El Clavo vein trend, a possible southwest extension of the La Calandria Vein-breccia at the Calandria Norte target area into the surrounding volcaniclastics. Zones of vein-style silicification occur along a 550m strike, with rock chips from initial sampling assaying between 0.2 and 1.4g/t Au. A total of 700m of drilling is planned with two 100m holes in the first stage (Figure 2).

Nido Este

Nido Este is a northeast trending rhyolite dome 1.1km north-west of Calandria Sur. Two earlier holes (NED 47 and 48) testing a 3D chargeability IP anomaly intersected wide zones of disseminated and veinlet pyrite-marcasite mineralisation, but with no significant gold and silver values. However, recent lag and float rock-chip sampling (up to 16.4g/t Au) has located a new target 300m east of the drill-tested area, possibly related to north-east trending veins. Six holes totalling 1,000m are planned for the second stage (Figure 2).

Nido Norte

The Nido Norte target is located 2km north-west of Calandria Sur. The mineralisation associated with rhyolitic domes shows low-sulfidation epithermal features (chalcedonic quartz) along the 1.5km NE-SW trending La Despreciada vein-breccia structure. Mineralisation has both structural and lithological controls with drill intersections such as 26.3m @1g/t Au and 8g/t Ag including 1.6m averaging 5.2g/t Au and 71g/t Ag on the structure, as well as 0.75m averaging 8g/t Au and 54g/t Ag on lithologic contacts close to the main structure. Six holes totalling 1,000m will follow up these intersections in the second stage.

Las Calandrias Project Background

Las Calandrias comprises multiple zones of gold mineralisation hosted by rhyolite domes over a 10.5 sq km area. In 2009, the first drilling programme (September-October) consisted of 16 scout holes (1,566m) testing the Calandria Norte vein-breccia and Calandria Sur dome breccia targets where significant gold mineralisation was discovered. The second drilling programme (March-April 2010) consisted of 4,400m in 37 holes and tested Calandria Sur (28 holes/3,212m); Calandria Norte (2 holes/299m), El Nido Este (2 holes/309m) and El Nido Norte (5 holes/580m). Phase three drilling (September-December 2010) consisted of 14,003m in 110 holes; Calandria Sur (56 holes/6,186m); Calandria Norte (43 holes/6,175m); Nido Norte (7 holes/1,054m); Nido Oeste (2 holes/421m); La Herradura (2 holes/168m). The continuity of phase three (January-April 2011) consisted of 15,736 m in 90 holes; Calandria Sur (6 holes/2,747m); Calandria Norte (21 holes/3,430); Despreciada: Nido Norte and Nido Centro (37 holes/6,414m); Nido Oeste (7 holes/1,130m); Nido Sur (18 holes/1,883 m); Gamekeeper (1 hole/132 m).

The full document including the Figures 1 to 4 referred to in this announcement can be found at http://www.marianaresources.com/pdf/2011/110823_Mariana_news.pdf.

Details of the recent initial resource estimates for Calandria Sur and La Calandria can be found at http://www.marianaresources.com/news/2011.php.

The fourth drilling programme is being undertaken by ECOMINERA. The drill programme is directed by the Argentina Exploration Manager, Dr Gustavo Rodriguez (MAIG) under supervision of Executive Chairman Mr John Horsburgh. Exploration information in this announcement has been compiled by John Horsburgh who is a Fellow of the Australasian Institute of Mining and Metallurgy. Mr Horsburgh has sufficient experience relevant to the style of mineralization and types of gold deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the JORC Code. Mr. Horsburgh is a qualified person within the meaning of national Instrument 43-101.

Quality Assurance/Quality Control

All technical information for the Company's Argentina projects is obtained and reported under a quality assurance and quality control (QA/QC) program. All samples are collected under the supervision of the Company geologists and dispatched via commercial transport to ALS Chemex laboratories in Mendoza, Argentina, and assayed in Chile. ALS Chemex's quality system complies with the requirements for the International Standards ISO 9001:2000 and ISO 17025: 1999. Samples returning greater than 10 g/t gold and/or greater than 100 g/t silver are assayed using gravimetric analyses.

Systematic assaying of sample duplicates and commercially prepared standards and blanks is performed for analytical reliability.

For further information please visit website at www.marianaresources.com.

About Mariana Resources

Mariana Resources Ltd is an AIM and TSX quoted exploration and development company with an extensive portfolio of gold, silver and copper projects in Argentina and Chile. In southern Argentina, in addition to the Las Calandrias gold-silver discovery, the Company has the Sierra Blanca silver-gold prospect (70%); the Los Amigos joint venture (49%) with Hochschild Mining and a 160,000 Ha land package (100%) in the country. All of these projects are located in the Deseado Massif epithermal gold-silver district in mining-friendly Santa Cruz province of southern Argentina, which hosts four mines and several advanced projects. In Chile, Mariana has a joint venture with US based international mining and natural resources company Cliffs Natural Resources Inc., to explore for iron oxide-copper-gold deposits ('IOCG') in a 92,000 km² area ("SCM Mariana Area") in north-central Chile along the highly prospective Atacama Fault Zone. The SCM Mariana Area includes the 44km² Buenaventura and 46km² Perro Chico IOCG projects. Mariana is also evaluating a number of gold-silver and copper-gold opportunities away from the Cliffs JV area, as part of a new initiative.

Safe Harbour

This press release presents "forward-looking statements" within the meaning of Canadian securities legislation that involve inherent risks and uncertainties. Forward-looking statements include, but are not limited to, statements with respect to the future price of gold and other minerals and metals, the estimation of mineral resources, the capital expenditures, costs and timing of the resources, the realization of mineral reserve estimates, the capital expenditures, costs and timing of the development of new deposits, success of exploration activities, permitting time lines, currency exchange rate fluctuations, requirements for additional capital, government regulation of mining operations, environmental risks, unanticipated reclamation expenses, title disputes or claims and limitations on insurance coverage. 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 subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of Mariana to be materially different from those expressed or implied by such forward looking statements, including but not limited to: risks related to international operations, actual results of current exploration activities; actual results of current or future reclamation activities; conclusions of economic evaluations; changes in project parameters as plans continue to be refined; future prices of gold and other minerals and metals; possible variations in ore reserves, grade or recovery rates; failure of equipment or processes to operate as anticipated; accidents, labour disputes and other risks of the mining industry; and delays in obtaining governmental approvals or financing or in the completion of development or construction activities. Although the management of Mariana believes that the expectations reflected in such forward-looking statements are based upon reasonable assumptions and have 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. Mariana Resources does not undertake to update any forward-looking statements that are incorporated by reference herein, except in accordance with applicable securities laws.

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


Contact Information



Mariana Resources Ltd.
John Horsburgh
Chairman
+61 2 94374588

Mariana Resources Ltd.
Glen Parsons
CFO
+61 2 94374588

Mariana Resources Ltd. (Vancouver Office)
Kathryn Witter
+1 604 669 9336
www.marianaresources.com

RFC Corporate Finance Limited (Nomad)
Rob Adamson
+61 2 9250 0041

RFC Corporate Finance Limited (Nomad)
Will Souter
+61 2 9250 0050

FinnCap (Broker)

Matthew Robinson
+44 20 7600 1658

Fox Davies Capital ( Co UK Broker)
Jonathan Evans
+44 20 3463 5000

St Brides Media and Finance Ltd (PR)
Felicity Edwards
+44 20 7236 1177

St Brides Media and Finance Ltd (PR)
Hugo de Salis
+44 20 7236 1177

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