Argentex Files Updated Mineral Resource Estimate and Technical Report for Pingüino Silver-Gold Project

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Sept. 25, 2014) - Argentex Mining Corporation ("Argentex" or the "Company") (TSX VENTURE:ATX) AGXMF is pleased to announce that it has filed the Updated Technical Report on the Pinguino Project, Santa Cruz, Argentina on Sedar. The updated NI 43-101 report was prepared by Mine Development Associates ("MDA") of Reno, Nevada, and dated 19th September, 2014.

Report Highlights:

--  Increases indicated category Ag Eq. ounces by 13% (adding 3.0 million Ag
    Eq. ounces for a total of 26.7 Million Ounces Ag Eq. @ 132.3 g/t Ag Eq.)
--  Increases inferred category Ag Eq. ounces by 49% (adding 2.3 million Ag
    Eq. ounces for a total of 7.0 Million Ounces Ag Eq. @ 98.0 g/t Ag Eq.) 
--  Adds four new veins to the resource, bringing the total number of veins
    included in the updated resource estimate to twelve 
--  More than sixty veins remain to be fully tested in vein structures that
    remain open in all directions

Table 1: Resource Summary

----------------------------------------------------------------------------
Indicated       Grade (g/t)     Grade          Ounces (000's) Pounds (000's)
----------------------------------------------------------------------------
Tonnes                        Zn   Pb                                       
 ('000)   Ag Eq.    Ag   Au  (%)  (%)       Ag    Ag Eq    Au      Zn     Pb
----------------------------------------------------------------------------
6,281      132.3 103.4 0.58 0.77 0.54 20,877.0 26,717.0 116.8 107,225 74,993
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
Inferred        Grade (g/t)     Grade          Ounces (000's) Pounds (000's)
----------------------------------------------------------------------------
Tonnes                        Zn   Pb                                       
 ('000)   Ag Eq.    Ag   Au  (%)  (%)       Ag    Ag Eq    Au      Zn     Pb
----------------------------------------------------------------------------
2,207       98.0  65.3 0.66 0.52 0.35  4,632.0  6,957.0  46.5  25,378 17,062
----------------------------------------------------------------------------
1.  Ag equivalent grade = Ag grade + (Au grade (i) 50) (Rounding may cause  
    apparent discrepancies).                                                
2.  Mineral Resources are not Mineral Reserves and do not have demonstrated 
    economic viability. There is no certainty that all or any part of the   
    estimated Mineral Resources will be converted into Mineral Reserves.All 
    Mineral Resources have been classified in accordance with the Canadian  
    Institute of Mining, Metallurgy and Petroleum (CIM), CIM Standards on   
    Mineral Resources and Reserves, Definitions and Guidelines prepared by  
    the Standards Committee on Reserve Definitions and adopted by the CIM   
    Council on December 11, 2005 and updated on November 27, 2010 and on May
    10, 2014.                                                               
3.  Two cutoffs are used for reporting the resources: 40g/t Ag Eq for       
    elevations above 270m, and 100g/t Ag Eq for elevations below 270m       
    elevation. Average surface elevations at Pinguino are around 400 metres 
    above sea-level.                                                        
4.  MDA reports resources at cutoffs that are reasonable for deposits of    
    this nature given anticipated mining methods and plant processing costs,
    while also considering economic conditions.                             
5.  For the Luna, Savary and CSV veins, resources were reported only for    
    those that fell within a floated cone based on reasonable assumptions   
    and prices for resource reporting for open pit mining.                  
6.  Grades presented are in situ and have been reported to 3m by 6m by 4m   
    (high) blocks.                                                          
7.  Tonnes reported are for all veins, as are gold and silver grades and    
    ounces, but zinc and lead pounds and grades are exclusive of Luna,      
    Savary, Karina, and CSV veins, which did not have zinc and lead         
    estimated.                                                              
8.  All equivalent ounces for silver and gold were calculated by Argentex.  

The report can also be viewed on the Argentex website at www.argentexmining.com. The results from the report were previously announced by the Company in a news release on August 21st, 2014.

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.

The Pinguino system has grown to 70+ individual veins, with a combined strike length approaching approx. 113 line-kilometers. The Pinguino project is unique within the Deseado Massif region of Santa Cruz province in that it contains two different and spatially distinct types of mineralization, one precious metal and the other sulphide-rich polymetallic. The Company continues to evaluate the geological model of sulphide-enriched potentially mineralized intrusives at depth, forming the probable source for the polymetallic veins exposed on surface.

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.

The Updated Technical Report was prepared by Steven Ristorcelli, C. P. G., Principal Geologist at Mine Development Associates in Reno, Nevada in accordance with NI 43-101, and he is an independent "Qualified Person" as defined by NI 43-101. Mr. S. Ristorcelli has approved the details of the Updated Technical Report included in this press release.

All other content of this press release has been reviewed and approved by Mr. Mike Brown, MAIG, and he is a "Qualified Person" as defined by NI 43-101.

About Argentex

Argentex Mining Corporation is an exploration company focused on advancing its Pinguino silver-gold project in Santa Cruz, Argentina. In total, Argentex owns 100% of the mineral rights to more than 37 properties located within approximately 136,087 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 OTCQB. 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.

On behalf of Argentex Mining Corporation:

Michael Brown, President and CEO

FOR FURTHER INFORMATION PLEASE CONTACT:
Argentex Mining Corporation
Michael Brown
President and CEO
604-568-2496
info@argentexmining.com
www.argentexmining.com