Eagle Star Minerals Claims Extensions of the Phosphate (P2O5) Mineralized Package Identified at Canabrava and Commences Chemical and Metallurgical Tests

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 21, 2012) - Eagle Star Minerals Corp. (TSX VENTURE:EGE)(PINKSHEETS:ELGSF)(FRANKFURT:E6R) ("Eagle Star" or "the Company") is pleased to announce that it has increased its land package in the Canabrava block by 17,509 hectares (11 Claims) in light of its most recent discovery of a minimum 7 meter P₂O₅ mineralized package traced over 13kms as previously reported in the June 7^th, 2012 press release. In addition, Eagle Star is pleased to announce it has commenced chemical and metallurgical tests on selected samples from the mineralized package to determine the most cost effective process to extract, beneficiate and produce economic grade of P₂O₅ from the mineralized package for commercial use.

Additional Claiming

The decision to add new areas to the Canabrava block was based on positive evidence collected through fieldwork and additional geological mapping pointing to continuation of the identified mineralized package beyond the originally claimed areas. The majority of the newly claimed landmass is covered by a 1 to 3 meter quaternary coverage suggesting that the mineralized package was not affected by erosion.

The Canabrava Block now covers 40,678 hectares across 23 claims (Figure 1).

To view Canabrava claims (Figure 1) please click on the following link: http://media3.marketwire.com/docs/EGEFigure1.pdf

Chemical and Metallurgical Tests

The chemical and metallurgical tests will be conducted over three samples that represent the main mineralized rock types associated with the package: lower grade phosphorite (4.4% P₂O₅), high grade phosphorite (12.4% P₂O₅) and siltstone (1.4% P₂O₅). Mr. Geraldo Luiz, a Mining Engineer with extensive phosphate experience will carry out the tests, which will be conducted at the Chemical Engineering Department of the Federal University of Minas Gerais (UFMG) in Brazil, Minas Gerais.

Mr. Geraldo is a member of the GLS Consultores Associados with specific experience in characterization of phosphate mineralization according to various parameters such as chemical composition and mineral solubility. Mr. Geraldo has participated in the development of beneficiation processes of most Brazilian phosphate deposits, including Catalão - GO, Lagamar - MG, Itataia - CE, Irecê - BA, Angico dos Dias - BA and Tapira - MG.

The chemical and metallurgical tests will include petrographic studies, geochemistry of major, trace and rare earth elements and solubility (conversion of phosphorus in acid citric solution and in CNA+water). The methods and techniques used are spectrometry fluorescence X-ray, atomic absorption spectroscopy, specific ion electrodes, spectrophotometry, classical wet analysis and diffraction.

The results from the tests will provide further, vital information concerning the composition and solubility of the phosphate in the mineralized package with clear implications on production methods and future costs.

Upon receipt of positive results, Eagle Star intends to commence a drill program that will enable it to prove the extent of mineralization in the form of an NI 43-101 resource calculation while further investigating the most attractive production methods and procedures from an economic standpoint.

Conclusions

"The results of the chemical and metallurgical tests should help us to better understand the commercial value of this discovery prior to proving its size by way of drilling," stated Dr. Eloi Guimarães, an expert in phosphate mineralization and member of Eagle Star board. "The more information we have on the physical attributes of the mineralization, the better positioned we are to determine how important elements such as cut off grades, extraction approach and choice of production method will affect the profitability of a mining operation in Canabrava."

About the Company

Eagle Star Minerals Corp is a publicly listed company focused on the acquisition, exploration and development of agro-mineral properties in Brazil. Over the past two years, Eagle Star Minerals has strategically grown its' presence in Brazil and continues to focus on maximizing shareholder value by acquiring assets located in geological areas known for proven phosphate mineralization, coupled with good logistics in close proximity to agriculture.

The Company's shares are publicly traded on the TSX Venture Exchange under the symbol EGE, on the OTC Pink Sheets under the symbol ELGSF and on Frankfurt Stock Exchange under the symbol E6R.

On behalf of the Board of Directors

EAGLE STAR MINERALS CORP.

Eran Friedlander, President