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Commenting today:

Chairman John Horsburgh said, "The decision to delist from the TSX, the refocus of exploration efforts and the Board and management changes are all designed to respond in a decisive and positive way to current market conditions which are affecting many junior explorers today. I fully endorse Glen Parsons in taking over the reins and managing Mariana. He has been performing this task in tandem with me for the last two years. Also, Ray Angus' new position as Peru Country Manager overseeing the Condor del Oro Project in Peru is a very positive move. Fortunately Mariana has an excellent project base and I believe the Company is well placed to move to the next level."

Newly appointed CEO Glen Parsons said, "The above decisions by the Board position Mariana for greater share price leverage in anticipation of future exploration success. I believe that Mariana is well poised for 2013 with its exciting diversified asset base and aligned streamlined teams focusing on delivery. The Peruvian initiative and Ray Angus' decision to deliver this managed strategy in-country, are extremely positive for Mariana, given his previous success. I look forward to managing the next phase of Mariana on behalf of the Board and building on the successes of the Mariana team, lastly I would to thank John and the rest of the Board for their continued support."

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 South America. In Peru, Mariana has an option to earn a 51% interest in highly prospective copper-gold and copper-silver porphyry targets in the Cordillera del Condor of northern Peru.

In southern Argentina, the Company's core gold-silver projects are Las Calandrias (100%), Sierra Blanca (100%), Los Cisnes (100%), Bozal (100%) and Los Amigos JV (30%). These projects are part of a 200,000+ Ha land package in the Deseado Massif epithermal gold-silver district in mining-friendly Santa Cruz Province. On 19 December 2011, Mariana announced that AngloGold had completed a strategic placement whereby AngloGold was issued 45,000,000 shares in Mariana at a price of 12 pence per share. AngloGold has the right to maintain its equity of 19.9% in Mariana in further issues by Mariana.

Safe Harbour

This press release contains "forward-looking information" within the meaning of Canadian securities legislation ("forward-looking statements"). These forward-looking statements are made as at the date of this press release and include, without limitation, statements regarding discussions of future plans, the realization, cost, timing and extent of mineral resource estimates, estimated future exploration expenditures, costs and timing of the development of new deposits, success of exploration activities, permitting time lines, and requirements for additional capital. The words "plans", "expects", "budget", "scheduled", "estimate", "forecasts", "intend", "anticipate", "believe", "may", "will", or similar expressions or variations of such words are intended to identify forward-looking statements. Forward-looking statements are subject to known and unknown risks, uncertainties, assumptions and other factors that may cause actual results to vary materially from those expressed or implied by such forward-looking statements, including, but not limited to: the effects of general economic conditions; the price of gold and silver; misjudgments in the course of preparing forward-looking statements; risks associated with international operations; the need for additional financing; risks inherent in exploration results; conclusions of economic evaluations; changes in project parameters; currency and commodity price fluctuations; title matters; environmental liability claims; unanticipated operational risks; accidents, labour disputes and other risks of the mining industry; delays in obtaining governmental approvals or in the completion of development or construction activities; political risk; and other risks and uncertainties described in the Company's annual information form and MD&A for the most recently completed financial year available on SEDAR. Although we believe 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 forward-looking statements. Accordingly, readers are cautioned not to place undue reliance on forward-looking statements. We do not undertake to update any forward-looking statements, except in accordance with applicable securities laws.

Incorporated in Guernsey registered number 44276.

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.



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

Mariana Resources Ltd
Glen Parsons
CFO
+61 2 94374588

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

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

In U.K.:
RFC Ambrian Limited (Co UK Broker)
Klara Kaczmarek
+44 20 7634 4725

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

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