MARIANA RESOURCES LIMITED AIM and PLUS code: MARL 29 June 2010 Mariana - Placement raises �6.75 million Mariana Resources Ltd (Mariana or the Company), the AIM quoted exploration and development company focussed in Argentina and Chile, has completed the placement to raise �6.75 million (approximately US$10 million) at a price of 28 pence per ordinary share, subject to admission of the shares to trading on AIM which is expected to occur on 30 June 2010. The Companys broker, FinnCap Limited in conjunction with GMP Securities Europe LLP (acting as co-broker) the Companys nominated adviser RFC Corporate Finance Limited and Mariana, have collectively placed 24,107,143 million new ordinary shares.

Following the issue the capital of the Company will be 158,093,763 ordinary shares of 0.01p par value. There was very strong demand for the shares which enabled the Company to complete the placing at a premium to the then market price.

While there were some offers to take the entire placement, the Board elected to place the shares with existing large and institutional shareholders in Australia, U.K.

and Canada and to introduce several new UK investors. The funds will largely be used to accelerate the development of the Companys gold-silver exploration portfolio in Argentina.

The Companys primary focus will be to fast-track exploration drilling at its flagship Las Calandrias gold discovery, located in the prospective Deseado Massif gold district in southern Argentina, to define a resource and show the economic potential of the project. **ENDS**
For further information please visit website at www.marianaresources.com or contact the following. John Horsburgh (Chairman) Mariana Resources Ltd +61 2 94374588 John Sutcliffe (MD) Mariana Resources Ltd +593 99 808080 Rob Adamson RFC Corporate Finance Limited (Nomad) +61 2 9250 0041 Will Souter RFC Corporate Finance Limited (Nomad) +61 2 9250 0050 Joe Lunn (Analyst) FinnCap (Broker) +44 20 7600 1658 Matthew Robinson FinnCap (Broker) +44 20 7600 1658 Felicity Edwards St Brides Media and Finance Ltd (PR) +44 20 7236 1177 Hugo de Salis St Brides Media and Finance Ltd (PR) +44 20 7236 1177
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 Argentina and Chile.

In Argentina, in addition to the Las Calandrias gold-silver discovery project, the Company owns the Sierra Blanca silver prospect and has a joint venture with Hochschild Mining.

Mariana also owns exclusive exploration rights to a 160,000 Ha area.

All of these projects are located in the Deseado Massif gold district in mining-friendly Santa Cruz province of southern Argentina, which hosts four gold/silver mines and several notable bonanza type precious metal prospects. In Chile, Mariana has a joint venture agreement 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 km� area (SCM Mariana Area) in north-central Chile.

The SCM Mariana Area includes two Iron Oxide Copper Gold (IOCG) exploration projects in the highly prospective Atacama Fault Zone, approximately 100 km from Freeports Candelaria Copper Mine: the 44km� Buenaventura and 46km� Perro Chico projects.
Felicity Edwards St Brides Media and Finance Ltd Chaucer House 38 Bow Lane London EC4M 9AY Tel: +44 (0) 207 236 1177 Mob: +44 (0) 7748 843871 Fax: +44 (0) 207 236 1188 Email: Web: www.stbridesmedia.co.uk