Mariana Resources Releases Audited Annual Financial Statements, Year Ended 31 December 2012

VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 03/28/13 -- Mariana Resources Limited (AIM: MARL) has released its audited annual financial statements and annual report for the year ended 31 December 2012. The following document may be obtained by clicking on the link below or via the Company's website:

1. Annual Report to shareholders which includes the audited financial statements.

Link: http://www.marianaresources.com/pdf/2013/Mariana_AFS_2012.pdf

Exploration Information

(i) Gold equivalent (AuEq) grade has been calculated by dividing silver assays by 60 and adding to the gold value and this assumes 100% recovery.

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 mineralisation and types of gold and base metal deposits 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, Canada.

Quality Assurance/Quality Control

All technical information for the Company's Peru 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 Lima, Peru for sample preparation and analytical procedures. Samples are fire assayed with AAS finish on a 50 g assay charge. Additionally, all samples are analyzed by a 35 element aqua regia ICP-AES method plus trace mercury detection by cold vapour-AAS methods. ALS Chemex's quality control system complies with International Standards ISO 9001:2008 and ISO 17025. Analytical accuracy and precision are monitored by the analysis of reagent blanks, reference material and replicate samples. As part of Mariana's Quality Control and Quality Assurance program, certified reference materials, field duplicates and blank samples are inserted continuously into the sample stream

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 Santiago de 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 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 certain statements which may be deemed to be 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, silver and copper; misjudgements 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 financial statements for the most recently completed financial year which is available on the Company's website at www.marianaresources.com. 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.

Contacts:

In Australia:

Mariana Resources Ltd

John Horsburgh

Chairman

+61 2 94374588


Mariana Resources Ltd

Glen Parsons

CEO

+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 (UK Broker)

Caspar Shand Kydd

+44 20 7634 4725


In Canada:

Mariana Resources Ltd (Vancouver Office)

Kathryn Witter

+1 604 669 9336
www.marianaresources.com