Coro Amends Terms of San Jorge Agreement

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 29, 2012) - Coro Mining Corp. ("Coro" or the "Company") (TSX VENTURE:COP) is pleased to announce that Franco-Nevada Corporation ("Franco Nevada") and the Company have agreed to amend the terms of the Purchase Agreement by which Coro may acquire its 100% interest in Minera San Jorge ("MSJ"). Franco Nevada acquired Lumina Royalty Corp, the previous owner of MSJ in December 2011.

The amended terms for Coro to acquire 100% of MSJ are as follows;

* Option payments by Coro of US$1.25 million per year, for 10 years, payable quarterly, commencing March 31, 2012
* Coro may at any time, prepay the outstanding amount with a one-time payment equal to the net present value of the future payments, using a 5% discount rate
* A 7.5% Net Smelter Return ("NSR") payable by Coro on all gold produced from the property
* The option payments are not payable when exceeded by the gold NSR payment for the period
* No other consideration, obligations, payments, or royalties are due to Franco Nevada, and Coro may withdraw from the Agreement at any time by not making the payments due.

Table 1 compares the amended terms with the previous acquisition terms. The companies have signed a non-binding letter of intent and are in the process of finalizing the amended agreement.

Alan Stephens, President and CEO of Coro commented, "We are very pleased that Franco Nevada has shown its willingness to modify the terms of the Purchase Agreement. The previous agreement contemplated US$9.25 million in payments over the next 15 months; the new option payment schedule allows Coro to stage its investment in the project until it has greater certainty on the ability to permit the project in Mendoza province. The Company will provide its shareholders with an update of the status of San Jorge shortly."

As of December 31, 2011 the Company had approximately CA$12 million in cash, and is well funded to advance its projects.




CORO MINING CORP.

Alan Stephens, President and CEO

About Coro Mining Corp.:

The Company was founded with the goal of building a mining company focused on medium-sized base and precious metals deposits in Latin America. The Company intends to achieve this through the exploration for, and acquisition of, projects that can be developed and placed into production. Coro's porphyry copper properties include the Berta, El Desesperado, Chacay, Llancahue, and Celeste exploration projects located in Chile and the advanced San Jorge porphyry copper-gold project, in Argentina.

This news release includes certain "forward-looking statements" under applicable Canadian securities legislation. Such forward-looking statements or information, including but not limited to those with respect to the prices of copper, estimated future production, estimated costs of future production, permitting time lines, 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 such forward-looking statements or information. Such factors include, among others, the actual prices of copper, the factual results of current exploration, development and mining activities, changes in project parameters as plans continue to be evaluated, as well as those factors disclosed in the Company's documents filed from time to time with the securities regulators in the Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador.

About Benton

Benton is a Canadian based junior with multiple joint ventures and a diversified property portfolio in Gold, Nickel, Copper, and Platinum group elements. The Company currently has approximately $8.1 million in cash, owns approximately 57.86 million shares in Coro Mining Corp. (TSX:COP), holds approximately 348,000 shares of Stillwater Mining Company (NYSE:SWC), holds 782,500 shares in Marathon Gold Corp. (TSX:MOZ), holds 1.6 million shares in Puget Ventures (TSX VENTURE:PVS), holds 8.47 million shares of Mineral Mountain Resources Ltd. (TSX VENTURE:MMV), and holds 815,000 shares of Bell Copper Corporation (TSX VENTURE:BCU), holds 1.67 million shares of Trillium North Minerals (TSX VENTURE:TNM), holds 1.55 million shares of Golden Dory Resources (TSX VENTURE:GDR) and holds 3 million shares of Parkside Resources (currently private). Benton is currently in the process of spinning out the majority of its assets by a plan of arrangement into a new listed company in order to separate its 41.6% investment in Coro Mining from its cash, equities and exploration assets. Benton shareholders will receive one share in this new company for each share of Benton held pursuant to regulatory approval.

On behalf of the Board of Directors of Benton Resources Corp.,

Stephen Stares, President

Forward-looking statements in this release are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform act of 1995. Investors are cautioned that such forward-looking statements involve risks and uncertainties.

THE TSX VENTURE EXCHANGE HAS NOT REVIEWED AND DOES NOT ACCEPT RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

Contact Information


Coro Mining Corp.
Michael Philpot
Executive Vice-President
(604) 682 5546
investor.info@coromining.com
www.coromining.com

Benton Resources Corp.
Stephen Stares
(807)475-7474
(807)475-7200 (FAX)
www.bentonresources.ca

Investor Relations
Clair Calvert
204-799-2086

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 Resources Corporation: Argentina-Organullo Gold-Silver Property Update

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 29, 2012) - Artha Resources Corporation (TSX VENTURE:AHC) is pleased to provide this update on our recent reconnaissance field work completed in late 2011 on the newly optioned Organullo gold-silver project in Salta Province, NW Argentina. Sampling results coupled with a detailed structural interpretation have highlighted three initial target zones within the 8km by 8km altered and mineralised system identified by previous exploration.

Highlights from Recent Artha Work

Artha completed an initial reconnaissance level mapping (at 1:10 000 scale) and sampling program in November/December 2011 which was intended to familiarize our technical team with the property and ground truth historical results. The focus of the work was the 3.5km zone through the central part of the property near the historic Julio Verne mine. The outcome of this work has been a detailed structural interpretation of the property providing a better understanding of its context in the regional geological framework (Map 1) as well as a clearer picture of the mineralisation.

Artha has identified three initial target zones based on recent mapping and sampling and historical work. Map 2 depicts these three zones in the context of gold anomalism from recent and historical surface sampling. From this work Zones 2 and 3 are considered high priority.

* Zone 2: located in the central part of the property; large Au anomaly (>0.25ppm Au) 750x600m in size; includes the Julio Verne Mine (Cu-Bi-Au±Pb±Ag±As±Sb) and Claudia and Belen veins (Au-Pb-±Sb-±Mo) and Virginia, Martha and Carolina veins (Au-Pb-Zn-As). This zone has been previously drilled however due to very poor recoveries, in the order of 20-30%, it is considered to remain a high priority target. See Maps 3A and 3B for more detailed geology, historic drill hole collars and a cross section through the zone.

* Zone 3: located at the northern part of the property, low grade gold-silver anomalism over a broad area. Bulk tonnage system target.

A follow-up program will be undertaken starting in April 2012 which will include an initial surface trenching program designed to test for broader zones of mineralisation both adjacent to and between the sheeted vein system in the central part of the property (Target 2 on Map 2) as well as test for broad low grade bulk tonnage potential to the north of the historical Julio Verne mine (Target 3 on Map 2).

About Organullo

* Organullo is a relatively advanced project with excellent potential for both high and low sulphidation type epithermal high grade gold and silver as well as bulk tonnage lower grade gold and silver mineralization.
* Salta is a mining friendly province with committed government support for exploration. Local infrastructure is considered good with a nearby rail line and experienced local labor force.
* Sampling by previous explorers identified a gold-silver mineralized area of approximately 8-km by 8-km.
* Historic drilling intersected 189 metres of 0.66 g/t gold and 186 metres of 0.50 g/t gold in two separate holes suggesting a large bulk tonnage, low grade gold (and silver) system exists on the property but this model has not been adequately targeted or explored.
* Previous drilling programs had very poor recoveries in both diamond and reverse circulation methods.
* Much of the previous drilling has gold and silver intersections in both veins and broader lower grade zones. Many areas remain untested.

Geology and Mineralisation.

At least 13 mineralized veins, distributed in three domains, have been mapped out and recent work by Artha, including 210 rock chip samples has confirmed this. Vein outcrops are 200 to 400m long and 0.2 to 6.0m wide. Mineralization consists of crackle banded quartz with traces of galena, chalcopyrite, sphalerite and some sulfosalts; gold values ranges from <1 g/t to 37g/t Au in rock chips. Silica-pyrite alteration is widespread around the intrusive contacts; weak sericite and advance argillic alteration form haloes on the wall rock of the veins. Weak pyrite-chlorite-epidote alteration occurs at the periphery of the mineralized system. Previous drilling data has been reviewed with the best vein intercepts: Natalia Vein (1m @ 8.9g/t Au); Belén Vein (2m @ 11.0g/t Au); Marta Vein (1.20m @ 0.51g/t Au); Sara Vein (1.7m @ 12.3g/t Au); Virginia Vein (1.20m @ 3.45g/t Au) and Loly Vein (1.40 @ 1.13g/t Au).

Pirquitas Update

Artha is continuing to negotiate a formal access agreement with the local community at Pirquitas to enable higher impact activities to commence such as drilling. The summer rainy season has also deterred any field activities in the region for the last few months.

Ivan Alberto Drilling

The final report on the first phase drilling program completed last year was received by Artha Management last week from its consultants who managed the work and is currently being reviewed. The conclusions and recommendations from the report are that as near surface, precious and base metal mineralisation of economic grade was not encountered over sufficient widths in enough holes, further drilling is not warranted at this stage. All results are being reviewed to determine further work on the property which contains favorable geology and still remains highly prospective, however, given Artha's large property portfolio in the region the company needs to allocate funds to other projects at this stage.

Corporate News

The Company reports that Dennis Stover has resigned from the board of directors of Artha. The Company thanks Mr. Stover for his services as a director. The Company also announces that pursuant to the Company's Stock Option Plan, it has granted 1,275,000 incentive stock options to its directors, officers, employees and consultants at an exercise price of $0.10 per share, and expire on February 29, 2017. Charles Straw, B.Sc., is the qualified person under NI 43-101 responsible for the technical information in this news release. Artha was founded by a team of mining industry professionals with a proven track record in project generation, exploration, mining and finance. The team's primary goal is to build Artha into a world class mining company, focused on the discovery, development and mining of economic minerals deposits globally.

On Behalf of the Board of Directors,

Todd McMurray, President

To view accompanying maps, visit the following link: http://media3.marketwire.com/docs/Maps1_2_3A_3B.pdf

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

Artha Resources Corporation
Todd McMurray
President, 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/

Mariana Reports Remaining Phase IV Drilling Results at Sierra Blanca Project, Deseado Massif, Southern Argentina

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 29, 2012) - Mariana Resources Ltd ('Mariana' or 'the Company') (AIM:MARL)(PLUS:MARL)(TSX:MRY), the AIM and TSX quoted exploration and development company focused on Argentina and Chile, is pleased to report further assay results received from the remaining 18 holes of the 5,200m 26-hole Phase IV drilling campaign at the Sierra Blanca gold-silver project ('Sierra Blanca') in the Deseado Massif of southern Argentina. Mariana finalised the purchase of the outstanding interest in the project from IAMGOLD last week, to make the project 100% owned by Mariana (see announcement 24 February 2012).

Overview

* Scout drilling confirms broad target areas at Vetarron, Lucila, Trafwe and Achen-Chala along a combined 8.9km strike
* New target area Vetarron Norte has intersections of vein-breccias anomalous in gold and silver in VND122 and VND 123 following 4.5m @ 3.6 g/t Au & 159 g/t Ag from 85.5m in previously announced VND102
* Two thirds of the 1.8km strike at Vetarron is untested with a possible 1.25km northerly extension under gravel cover
* Further zones of strongly anomalous to low grade gold-silver intersected at the 1.8km Lucila vein target in several drill holes - intersections of NW structures along the EW Lucila trend identified as additional targets
* Scout drilling along the 1.4 km gravel covered Trafwe magnetic low target between Lucila and Achen has intersected a structure hosting quartz-sulphides with elevated gold and silver values: 2.3m @ 0.6 g/t Au and 21 g/t Ag - TRD104 and 0.5m @ 0.5 g/t Au and 49 g/t Ag - TRD114
* At Achen-Chala, silver mineralisation with anomalous gold was intersected in CHD115 with 1.6m @ 0.4 g/t Au 91 g/t Ag from 99.9m
* Target areas to be advanced with structural/alteration mapping and detailed ground magnetics

Executive Chairman John Horsburgh said, "Broad target areas with a combined strike length of 8.9km (Vetarron, Lucila, Trafwe and Achen-Chala) have been identified. In particular, Vetarron Norte is shaping up as a priority target area, both in terms of strike length and depth potential. Also, two drill holes testing the 1.4km linear magnetic low between Lucila and Achen have located quartz-sulphides in structures with gold and silver mineralisation below thick gravel cover. These results underpin further exploration of the vein systems guided by structural and alteration mapping and detailed ground magnetics."

To view the figures referred to in this report click on the following link:
http://www.marianaresources.com/pdf/release/Mariana_120229.pdf

Vetarron Norte (Figure 3)

The target area comprises multiple quartz sulfide vein breccias over widths up to 25m along a 1.8 km N-S trend delineated by outcrops with rock chips up to 0.3 g/t Au and 23 g/t Ag, IP chargeability anomalies and magnetic lows. The host rocks are andesites and sediments.

Quartz-sulfide breccias/stockworks up to 50m wide and anomalous in gold (25m @ 0.3 g/t Au - VND100 and 6.5m @ 0.3 g/t Au - VND123) have been intersected by testing strong chargeablity anomalies below limited outcrop. Encouragingly, VND102 from the first batch, intersected 0.5m @ 12.1 g/t Au and 732 g/t Ag.

Two thirds of the 1.8km trend are untested to date. In the area drilled, chalcedonic quartz with high pathfinder elements (antimony and arsenic) indicate an intact high level epithermal system with potential at depth. Recently discovered outcrops of gold-anomalous quartz breccia in covered ground, 200m (coincident chargeability anomaly) and 1,250m north of the area drilled (prominent magnetic low) indicate a northerly extension of the system. (Figures 2 and 3)

Lucila Vein Zone (Figure 4)

The 1.8km E-W trending Lucila vein (up to 5m thick) coincides with a 5.3 km ENE trending magnetic low which includes the Trafwe target. Scout drilling (2008) intersected quartz-chalcedony veins, silicification (up to 30m wide) and low grade gold-silver. Recent results from LUD118 and 119 show silver-rich mineralisation persisting at depth (2m @ 0.3 g/t Au 53 g/t Ag from 119m - LUD118). Higher gold-silver values are related to the intersection of the main E-W main structure with NW secondary structures (Figure 4). Along the 1.4 km long Trafwe sector, two holes intercepted a quartz-sulphide rich structure: 2.3m @ 0.61 g/t Au and 21 g/t Ag - TRD104 and 0.5m @ 0.5 g/t Au and 49 g/t Ag - TRD114.

New targets have been identified northwest of Lucila post-drilling, including an untested magnetic low and a 500m N-S trending area of chalcedonic quartz float with associated clay alteration.

Achen-Chala (Figure 5)

Silver mineralisation with anomalous gold was intersected from 99.9m in CHD115 with 1.6m @ 0.4 g/t Au 91 g/t Ag. Best intersections announced in the initial batch were: 1.0m @ 0.3 g/t Au 206 g/t Ag - CHD93 and 0.6m @ 4.1 g/t Au 549 g/t Ag - CHD95. A drill plan and an updated assay x width longitudinal section are shown for Achen-Chala (Figure 6). The vein system has been tested to approximately 150m to 200m below surface.
Table: Results summary




Gold equivalent grade is calculated by dividing silver assays by 60 and adding to the gold value and this assumes 100% metallurgical recovery. True widths are estimated to be 85-90% of the stated interval.

Follow-up Exploration

Taking into account the recent drill results and indications of strike extensions to the north under cover, the extensive Vetarron area requires further target definition in the form of detailed ground magnetics and mapping. Ongoing work at Lucila, Trafwe and Achen-Chala will include structural/alteration mapping and detailed magnetic surveying to identify favourable structural controls on mineralisation such as NW trending cross structures which could lead to higher grade mineralisation.

Sierra Blanca Background

The 7,000 Ha Sierra Blanca Project is 50km NW of AngloGold Ashanti's Cerro Vanguardia mine along the Tranquilo regional fault system and adjacent to TSX quoted Argentex Mining's Pinguino epithermal gold-silver/polymetallic discovery (Figure 1). Sierra Blanca owns 100% of the Project.

Mariana discovered epithermal gold-silver mineralisation at Veta Chala in 2008. Reverse circulation and diamond holes (1,750m), targeted veins and breccias exposed in trenches with bonanza and high grade channel sampling assays (see news release 02/04/08). Several holes were ineffective with poor core recovery or high water flow in RC holes. 3-D IP, LAG sampling and ground magnetic surveys preceded the recent programme. There are several epithermal gold-silver prospects and numerous under-explored veins located within the property. Sierra Blanca has both low and intermediate style sulphidation epithermal mineralisation. Best intersections to date are 30.1m @ 2.2 g/t Au 101 g/t Ag & 2.1m @ 15.9 g/t Au 39 g/t Ag (Chala Central) and 11.0m @ 3.4 g/t Au 385 g/t Ag (Chala Splay).

Additional information

The Phase IV drilling programme was undertaken by ECOMINERA. The Company's Vice-President Exploration, Dr Gustavo Rodriguez (MAIG) directed the drill programme under the 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 advanced Las Calandrias gold-silver project, the Company has the Sierra Blanca silver-gold project (100%); the Los Amigos joint venture (49%) with Hochschild Mining and staked a 215,000 Ha land package (100%) . 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 independent of and outside the Cliffs JV area.

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


In Australia:
Mariana Resources Ltd
John Horsburgh (Chairman)
+61 2 94374588

Mariana Resources Ltd
Glen Parsons (CFO)
+612 94374588
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

In U.K.
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

In Canada:
Mariana Resources Ltd (Vancouver Office)

Kathryn Witter
+1 604 669 9336

Renmark Financial Communications (PR)
Arash Shahi
+1 514 939 3989

Renmark Financial Communications (PR)
Maurice Dagenais
+1 416 644 2020

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 Reports Trenching Results on Cerro Samenta Porphyry Copper Property

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 29, 2012) - MARIFIL MINES LTD. (TSX VENTURE:MFM) ("Marifil" or "the Company") reports that re-sampling of trenches on its Cerro Samenta porphyry copper project, Salta Province, Argentina confirms the presence of strong copper mineralization. The encouraging results of this sampling are set out in Table 1 below:

The trenches were originally dug by Teck Corp in the 1990s (see Marifil News Release dated November 30, 2011). The sample program was carried out by Petro Gold Servicios Mineros S.R.L., an independent geological services company. The purpose of the sampling program was to verify the presence and extent of oxide soluble copper.

Marifil concludes from the results of this examination that a significant copper oxide deposit may be present and that additional trenching along with shallow rotary drilling is justified. Marifil also believes that copper sulfide mineralization associated with the oxide copper deposits has been insufficiently tested by previous workers, and the property shows good promise for discovery of a porphyry copper deposit.

The Cerro Samenta property lies within a transverse continental scale lineament known as the Archibarca Lineament which localizes a string of porphyry copper prospects and deposits including Escondida situated 120 kilometers to the northwest of Cerro Samenta in Chile.

The project comprises two large and separate intrusive centers, the North Zone and the South Zone. Both zones display porphyry style copper and molybdenum sulfide mineralization within clusterhydrothermally altered quartz monzonite and rhyolitic intrusives. Both of the sulfide systems show strong induced potential (I.P.) geophysical anomalies. The South Zone appears to have been adequately drill tested by previous workers, but the North Zone, the site of the oxide copper trenches, lacks sufficient drilling for testing all the exploration potential.

Jeff Toohey, a qualified person and geologic consultant retained by Marifil to study the porphyry exploration potential of the property, concludes that further work is warranted and recommended with three key drill targets in the North Zone: the untested north-western quadrant of the chargeability anomaly (I.P.); the hydrothermal breccia deposit; and the sources of other occurrences of moderate- to high-grade oxide-Cu mineralization that has been sampled in soils and float and exposed in the sampled trenches to the south of the hydrothermal breccia.

Mr. Richard Walters remarks, "Cerro Samenta lies within a well established structural corridor hosting several porphyry copper deposits. It has easy access, and it's big with plenty of exploration romance. Already, a major copper producer has approached Marifil to engage in joint venture terms discussions."

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

WE SEEK SAFE HARBOR.

General Disclaimer

Marifil Mines Ltd. "Marifil" has taken all reasonable care in producing and publishing information contained in this news release, and will endeavor to do so on a periodic basis. Material in this news release may still contain technical or other inaccuracies, omissions, or typographical errors, for which Marifil assumes no responsibility. Marifil does not warrant or make any representations regarding the use, validity, accuracy, completeness or reliability of any claims, statements or information on this site. Under no circumstances, including, but not limited to, negligence, shall Marifil be liable for any direct, indirect, special, incidental, consequential, or other damages, including but not limited to, loss of programs, loss of data, loss of use of computer of other systems, or loss of profits, whether or not advised of the possibility of damage, arising from your use, or inability to use, the material from this news release. The information is not a substitute for independent professional advice before making any investment decisions. Furthermore, you may not modify or reproduce in any form, electronic or otherwise, any information on this site, except for personal use unless you have obtained our express written permission.

Forward-Looking Statements

This news release may contain forward-looking statements, including but not limited to comments regarding predictions and projections. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements.

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

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

Contact Information


Marifil Mines Ltd.
John Hite
President
(702) 562-4880
www.marifilmines.com

Marifil Mines Ltd.
Hugh Oswald
Investor Relations
(604) 684-4743 ext. 243
hugh@ascentacapital.com

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

Cascadero Copper Corporation: Property-Scale Rock Geochemistry Strongly Supports Large Tonnage Cu-Mo-Au Potential of Pancho Arias Porphyry

Geochemistry Coincident With High-Chargeability Geophysical Anomaly

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 29, 2012) - Cascadero Copper Corporation (TSX VENTURE:CCD) -

Salta Exploraciones S.A. (Salta), Cascadero's 50% owned Argentine subsidiary, has received assay results from a property-scale rock geochemistry program on the Pancho Arias Cu-Mo-Au porphyry prospect in Salta province, north western Argentina. Salta geologists collected 294 rock samples from outcrop over an area ~1,600 metres east west by 2,200 metres north south. The program was operated by Salta and designed and supervised by Raul Chocobar, Vice-President of Exploration and a director of Salta.

In late 2010, the sample area was subject to a ground based IP/Res/Mag geophysical program that consisted of 219 km of magnetic readings and eleven lines of IP data at 400-metre line spacing totaling 53 line kms.

The magnetic data identified a large weak oval-shaped magnetic-high measuring approximately 1,500 metres by 3,000 metres that correlates closely with a strong chargeability anomaly. Within the large weak magnetic-high, there are several smaller stronger magnetic-highs. Other magnetic-highs occur to the south, west, and north, outside of the strong IP anomaly.

The IP data outline strong chargeability anomalies in the central portion of the grid with chargeabilities from 40 mV/V to as high as 100 mV/V. The strong chargeability anomalies are coincident with strongly conductive zones over a zone measuring approximately 1,400 metres by 2,500 metres.

Weaker chargeability anomalies (12 to 20 mV/V) associated with high-resistivities are observed in the western portion of the grid. The weak chargeability anomalies in the west, together with the strong chargeability anomalies, form a circular zone approximately 3,000 metres in diameter at an elevation of 300 metres below the survey lines. The high-chargeability anomaly is open at 500 metres below the survey lines.

The Pancho Arias rock geochemistry assays appear to conform to and identify mineral zoning characteristic of porphyry Cu-Mo-Au deposits. The molybdenum (moly) assays are distributed throughout the area but the high-grade samples are concentrated in the north east part of the deposit in an area approximately 800 metres east west by 1,000 metres north south, which may be the potassic zone. Of the 294 rock samples, 72 moly samples are >100 ppm and 10 are >500 ppm moly (up to 1,900 ppm Mo), all of which are in this north east zone.

The majority of the copper assays (163 of 294) are >100 ppm and up to >10,000 ppm (>1%), are located in a circular zone that wraps around the high-grade moly zone to the west and south.

Gold values, >10 ppb gold, are present in 108 of the 294 samples and occur throughout the sample area but the higher-grades flank the copper zone and proximal to it especially on the western and southern area of the property. Nine samples are >1,000 ppb gold (one gram gold per tonne) with the highest assay at 4,190 ppb gold.

The mineralized pattern of the surface geochemistry coincides with and supports the underlying geophysical pattern of high-chargeability and high-resistivity. The data generally confirm the presence of a multi-phase mineralized intrusion. The data are critically important to locating and determining the depth and the highest priority drill targets.

Salta intends to start 3,000 metre core drilling program at Pancho Arias in early 2012.

Pancho Arias is the most northern of three identified Cu-Mo-Au porphyry systems in the Pancho Arias Mineral District. The three porphyries are controlled by a south west trending linear structure and are believed to have a common magmatic origin. Las Burras is 8 kms southwest of Pancho and Incahuasi is 3 kms southwest of Las Burras.

Pancho has 10 historic drill holes (1973-5) that outlined a deposit with values of moly and copper in shallow core holes. The core was not assayed for gold. Salta intends to re-drill at some of the historic locations and drill new locations. The program is planned to identify an inferred copper, moly, gold resource.

In mid-2012, Salta intends to conduct the first drill program on Incahuasi. In 2010, Salta completed an IP/Res/Mag geophysical survey that identified a large zone of chargeability that is 1,600 metres north south and >4,000 metres east west, which is open in both directions and to at least 500 metres below the survey lines. In late 2011, Salta completed an MMI geochemical survey in the area of the IP survey. Samples were collected by Salta personnel and assayed at SGS Peru. A full report is near completion.

In 2011, Salta drilled six core holes at Las Burras, four in section across the northern part of the porphyry and two drill holes on related quartz tourmaline sulphide veins distal to the porphyry. Three of the four drill holes in the porphyry is mineralized from surface to 300 metres (EOH) with variable copper-moly-gold values. The fourth hole was lost at 175 metres in mineralization. The Las Burras discovery hole is LB11-03, which assayed 0.42% copper, 0.02% moly and 0.10 g/t gold from surface to 120 metres, with similar moly and gold values to 300 metres but with a lower copper grade. The property requires additional core drilling. An eighteen (18) core hole program totaling 5,400 metres is planned for September 2012. The program is planned to identify an inferred copper, moly, gold resource.

The Company is excited by the opportunity that the Pancho Arias District porphyries provide. Each system has a large-scale geophysical footprint. Each has coincident geochemical and geophysical signatures. Pancho Arias has copper-moly in drill holes and Las Burras has copper-moly-gold in drill holes. The showings are closely spaced and each has potential to host a mid-to-large porphyry system.

The proximity of the showings and the combined potential tonnage could be of interest to most global mining companies in the copper, moly, gold space. The Pancho Arias District has exceptional infrastructure with fresh surface water, a railway to the Pacific Ocean Port of Antofagasta, a high-tension power line and a natural gas pipe line, all within a few kilometres of the porphyries.

ABOUT CASCADERO COPPER

Cascadero Copper is an integrated prospecting and mineral exploration business with offices in North Vancouver, BC, Canada, Sudbury, Ontario, Canada and Salta City in the province of Salta, Republic of Argentina. The Company generates, acquires and explores mineral properties and it active in the three jurisdictions.

In north central British Columbia, the Company has a 100% interest in a 31,000 hectare property in the Toodoggone region, which is prospective for copper gold porphyry systems. This property is subject to a C$20 million Joint Venture with Gold Fields.

In Ontario, the Company holds or has the right to acquire a 100% in 17 properties in the Sudbury, Swayze and Timmins camps, which are volcanic and sediment hosted copper gold prospects.

In north western Argentina, the Company holds a 50% interest in a 46 property portfolio, which consists mainly of bulk mineable copper-moly-gold porphyries and bulk mineable sediment hosted silver-gold plus base and rare metals.

In 2009, the Company discovered Taron, a large bulk mineable sediment hosted epithermal rare metal deposit in Argentina. In 2011, Cascadero discovered Las Burras, a new Argentine Cu-Mo-Au porphyry.

Cascadero's commodity focus is gold, silver, moly, copper and base and rare metal hosted in large-scale bulk mineable mineral systems.

In 2012 to 2013, Cascadero intends to advance by drilling three Argentine Cu-Mo-Au porphyry systems and continue development work in the El Oculto District, which hosts high-grade bulk mineable silver-rich systems. Exploration is also planned for Taron, an exciting large-scale sediment hosted rare metal discovery.

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

Contact Information



Cascadero Copper Corporation

Bill McWilliam
CEO
Office: 604-924-5504 or Cell: 604-999-0391
Bill@Cascadero.com

AJF Consultants
Alan 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/

Kestrel Gold Inc.: Surface Sampling Highlights the Near Surface Bulk Tonnage Potential of Gold Mineralization at Huachi Property, Argentina

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 28, 2012) -

NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES. ANY FAILURE TO COMPLY WITH THIS RESTRICTION MAY CONSTITUTE A VIOLATION OF U.S. SECURITIES LAWS.

Kestrel Gold Inc. ("Kestrel" or the "Corporation") (TSX VENTURE:KGC) is pleased to announce the release of the initial results from its surface sampling of road cuts and trenches on its 540 hectare Huachi property in San Juan Province, Argentina (the "Huachi Property") conducted in conjunction with the Corporation's 2011 diamond drilling campaign.

The results from 223 continuous one metre rock chip samples (including QA/QC samples) have been processed and compiled by Kestrel. Sampling was distributed over six lines covering the outcrops found along the roads and trenches on the east hill side of Cerro Los Bronces.

Highlights

Significant new continuous chip road sections include:

* 4.40 g/t Au over 7.0 metres
* 1.61 g/ Au over 13.0 metres
* 0.64 g/t Au over 6.0 metres

The results suggest that the best surface samples in terms of higher gold grade are where NW structures intersect what is believed to be a continuation of the NNE trending "Sentazon Structure". While the significant values reported are not true widths of the "Sentazon Structure" itself, the sample intervals stated may approximate true widths across NW trending mineralized structures.

The significant values stated are from two parallel northeast trending road cuts up to 30 metres apart where 71 and 64 one metre continuous chip samples were taken respectively. In this area, vuggy textured silica veins are hosted in a partially brecciated, fractured and highly altered, quartz-feldspar porphyry.

Geological Setting

The gold bearing quartz-feldspar porphyry rocks sampled display a dominant NW trending fracture/cleavage with strong argillic alteration that overprints propylitic alteration.

The occurrence and recognition of these mineralized structural alignments oblique to the direction of the major mineralized structures already known, opens up, in the opinion of management, new possibilities for exploration of other higher grade mineralized zones with the view to further increasing the volume of the gold bearing component at the Huachi Property.

Results for drill holes 11-HU-21 to 11-HU-23 including those targeting the "Sentazon Structure" as well as results from further surface trench sampling of the road cuts are anticipated to be released shortly, following QA/QC procedures and also pending further laboratory reports. Maps relating to the content of this news release showing the distribution of sample lines and the relative locations of samples will be posted on the Corporation's website.

Quality Assurance/Quality Control

Samples were submitted to Alex Stewart Assayers Argentina S.A. in Mendoza, Argentina an ISO 9000-2000 accredited laboratory. Gold and silver results were determined using standard fire assay techniques on a 30 gram sample with a gravimetric finish for gold and silver. In addition to this, ICP-AR (Aqua Regia digestion) analysis was performed on 39 elements. Gustavo Fernandez P.Geo of UAKO Geological Consultants supervised and assessed the QA/QC procedures and data in compliance with National Instrument 43-101 requirements.

About Kestrel Gold Inc.

Kestrel is a gold exploration company headquartered in Canada. Its two principal projects are the King Solomon Dome project in Canada's Yukon Territory and the Huachi project in Argentina. Kestrel (KGC) is listed on the TSX Venture Exchange.

Technical aspects of this news release have been reviewed and approved by W.A. Taylor, P.Geo., hereby designated as a qualified person under National Instrument 43-101.

Cautionary Statements

This news release contains "forward-looking information" within the meaning of applicable securities laws, including with respect to the potential mineralization of the Huachi Property and possible future exploration of the Huachi property and the timing of the release of further sampling results. Readers are cautioned to not place undue reliance on forward-looking statements. Forward-looking statements are based on certain key assumptions made by the Corporation, including assumptions based on the Corporation's current exploration results, assumptions related to obtaining sufficient financing and other resources to carry out any future exploration and timing to obtain reportable results. Actual results and developments may differ materially from those contemplated by these statements depending on, among other things, the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting exploration results and other geological data and the ability of the Corporation to obtain the funds and resources required to carry out further exploration. The forward-looking statements in this press release are made as of the date of this release and the Corporation undertakes no obligation to update publicly or revise any forward looking statements whether as a result of new information or otherwise, except as required by applicable securities laws. The Corporation undertakes no obligation to comment on analyses, expectations or statements made by third parties in respect of the Corporation or its financial or operating results or (as applicable) its securities.

The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this news release.
Contact Information

Kestrel Gold Inc.
Kevin Nephin
604-824-6056 or 604-799-2456
kvnephin@telus.net
www.kestrelgold.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 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/