Toronto, ON, June 12, 2007 -- Argentex Mining Corporation (OTCBB: AGXM) is pleased to report preliminary findings from a recently completed trenching program at its polymetallic Pinguino property located in Santa Cruz, Argentina. A total of 20 individual trenches tested six distinct and previously unexplored overburden-covered zones. All intersected gossanous vein in bedrock at depths averaging less than one meter (3.2 feet) below surface.

“We are very confident that the newly discovered gossans within these trenches represent the weathered portion of additional sulphide veins at Pinguino. If this is proven through drill testing, it appears that we will have significantly expanded the number of known sulphide veins and therefore the potential of sulphide-rich mineralization at Pinguino,” said Ken Hicks, President of Argentex. “As a result, we immediately commenced drill testing of these newly discovered sulphide targets.”

Specific zones targeted for initial drilling include Yvonne Sur, Yvonne Norte, Sonia, Kasia, Savary and Luna.

Argentex’s expanded exploration program at Pinguino was initiated following successful drill programs on the high-sulphide Marta Centro and Yvonne zones, and was designed to test previously unexplored areas outside of these two established sulphide vein systems. Surface targets were identified based on their geological signature, which combines anomalous geophysics and geochemistry, and a total of 20 trenches covering 2,012 meters (6,601 feet) were completed in six distinct zones. All intersected gossanous vein in bedrock at depths averaging less than one meter (3.2 feet) below surface.

Results from the earlier drill programs at Marta Centro and Yvonne revealed consistent polymetallic zinc-lead-indium-silver-gold-copper mineralization along strike and to depth. A total of 23 holes drilled into Marta Centro showed a consistent high-grade base metal core surrounded by wide intervals of disseminated mineralization, as detailed in press releases dated April 23, 2007 and April 16, 2007.

About Pinguino:
Argentex’s Pinguino property is located in Argentina’s Patagonia region, within the Deseado Massif of Santa Cruz province. Both silver-gold and base metal discoveries have been made through the completion of almost 8,000 meters (26,247 feet) of diamond drilling to date. Mineralization remains open-ended along strike and at depth, and numerous targets remain to be tested by drilling. Exploration has focused on zinc-indium-lead-silver-gold-copper discoveries in the Marta Centro and Yvonne areas of the property. In addition, recent machine trenching intersected new sulphide targets at Yvonne Sur, Yvonne Norte, Sonia, Kasia, Savary and Luna.

Pinguino is easily accessible, situated approximately 500 meters (1,640 feet) above sea level in low-relief topography.An existing system of all-weather roads provides year-round access to the property.

There are currently two operating precious metal mines in Santa Cruz province. In addition, Pan American Silver is receiving great cooperation from the Federal and Provincial governments in Argentina and believes that its Manantial Espejo project remains on schedule to commence production in May 2008, as referenced in a press release issued by Pan American Silver on April 19, 2007. Also in Santa Cruz province, Minera Andes projects that its San Jose gold-silver development project should begin operations in 2007.

Quality Assurance
Exploration on the Pinguino property is being conducted under the supervision of Mr. Kenneth Hicks, P.Geo., Argentex's President and a "qualified person" as defined by Canada’s National Instrument 43-101.

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 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. Drilling was conducted by Connors Drilling, a Canadian company with an office in Mendoza, Argentina.

ABOUT ARGENTEX:
Argentex Mining Corporation is a junior mining exploration company with significant holdings in the Patagonia region of Argentina. The company holds an option to acquire 100% mineral rights to the Pinguino property and owns 100% mineral rights to more than 30 properties with over 377,490 acres (152,766 hectares) of prospective land located in the Santa Cruz and Rio Negro provinces of Argentina. Argentex trades under the symbol AGXM on the OTCBB.

FURTHER INFORMATION:
Argentex Mining Corporation
Investor Relations
1-866-594-7687
[email protected]

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 are based on current facts and analysis and on forecasts of future results, estimates of amounts not yet determined and assumptions of management. Forward-looking statements in this news release include statements about the Company's belief that the newly discovered gossans within these trenches represent the weathered portion of additional sulphides veins at Pinguino and that if this is proven through drill testing, it appears that we will have significantly expanded the number of known sulphide veins and therefore the potential of sulphide-rich mineralization. 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. These and other risks are described in the Company's Annual Report on Form 10-K and other filings with the Securities and Exchange Commission.