Eagle Star Minerals Claims New Concession Block With Excellent Phosphate Results and Provides Trench Sampling Update on Ruth, Piaui, Brazil

VANCOUVER, BRITISH COLUMBIA--(Marketwire - May 29, 2012) - Eagle Star Minerals Corp., (TSX VENTURE:EGE)(PINKSHEETS:ELGSF)(FRANKFURT:E6R) ("Eagle Star" or "the Company") is pleased to announce its application for acquisition of the São Francisco Block, a new concession area within the Ruth Project.

The area was identified through a regional recognition program that was initiated based on the interpretation of results from trenching and systematic channel sampling at the Paes Landin block as seen below.

The area is located less than 50km to the northwest of the Paes Landin block and shares the same infrastructure of the other concession blocks, including close proximity to large agricultural centers and railroads.

Once the application is approved, the São Francisco concession block will be 100% wholly owned and cover 25,749 hectares across 13 claims. The Ruth Project will constitute 65 tenements over 115,712 hectares (or 6 concession blocks).

PAES LANDIN BLOCK (Salvador Target follow up)

At the Paes Landin (Salvador Target) trenching and sampling was carried out over different topographic levels. 214 samples in 12 trenches (238 linear meters) were opened with an excavator to create cuts up to two-meters depth. The sampling was done on a meter scale basis at intervals of one to four meters.

The results suggest the presence of multiple mineralized packages based on a collection of positive channel sample results at different topographic levels. Moreover, there are three main gaps within the potential packages that were not covered by trenching and systematic sampling (meter basis). Based on field evidence, it appears that the known mineralized packages may be linked and extend laterally.

To view the Salvador Target channel sample map, click on the following link: http://media3.marketwire.com/docs/e528g.pdf

Assay results greater than 2.5% P2O5 cut off grade are shown below.

BLOCK	TARGET	SAMPLE ID	TRENCH		ROCK TYPE	WIDTH (m)	P2O5 (%)
Paes Landin	Salvador	50313	TR01		Nodule*	*	22.03
Paes Landin	Salvador	50318	TR01		Purple siltstone	1.00	4.10
Paes Landin	Salvador	50408	TR2D		Purple siltstone	0.80	3.22
Paes Landin	Salvador	50410	TR2D		Purple siltstone	0.80	2.45
Paes Landin	Salvador	50411	TR2D		Purple siltstone	0.70	3.82
Paes Landin	Salvador	50413	TR2D		Nodule*	*	20.50
Paes Landin	Salvador	50463	TR01		Purple siltstone	0.70	7.96
Paes Landin	Salvador	50479	TR02B		Purple siltstone	1.00	2.48
Paes Landin	Salvador	50482	TR02B		Nodule*	*	19.74
Paes Landin	Salvador	50499	TR03		Nodule*	*	19.33
Paes Landin	Salvador	50503	TR04		Nodule*	*	19.92
Paes Landin	Salvador	50653	TR05		Purple siltstone	1.00	3.60
Paes Landin	Salvador	50658	TR05		Purple siltstone	1.00	6.89
Paes Landin	Salvador	50660	TR05		Purple siltstone	1.00	3.78
Paes Landin	Salvador	50663	TR05		Nodule*	*	19.65
Paes Landin	Salvador	50667	TR10		Purple siltstone	0.70	4.99
Paes Landin	Salvador	50669	TR10		Purple siltstone	1.00	12.21
Paes Landin	Salvador	50670	TR10		Purple siltstone	1.00	9.58
Paes Landin	Salvador	50672	TR10		Purple siltstone	0.80	6.61
Paes Landin	Salvador	50679	TR10		Purple siltstone	0.60	9.35
Paes Landin	Salvador	50710	TR09A		Purple siltstone	*	5.81
Paes Landin	Salvador	50716	TR09B		Purple siltstone	1.00	5.18
Paes Landin	Salvador	50727	TR11B		Purple siltstone	1.00	9.81
Paes Landin	Salvador	50730	TR11B		Nodule*	*	20.56

* Due to the characteristics of sampling nodules these samples are considered grab samples. Grab samples are by nature selective and may not be representative of mineralized units.

SÃO FRANSISCO BLOCK

The work performed at the trenches also helped to identify the mineralized rock types (purple and grey siltstone) and suggested that by targeting other areas, with different deposition conditions Eagle Star could discover additional geological units with significant packages of mineralized material. This realization led Eagle Star to perform a new regional exploration program focusing this time on different geological formations, where the mineralized rock types outcrop extensively and are visible as a result of road cuts.

The regional sampling program returned excellent results on different topographic levels and provided a strong technical case for claiming the São Francisco Block. Samples were chipped across road cuts and other outcrops as representative aggregates of specific units. Follow up exploration is planned for the São Francisco Block (channel sampling, further mapping and geophysical studies) as soon as official exploration permits are released by DNPM (Governmental Mining Agency of Brazil).

POINT	ELEV.	SAMPLE	ROCK CODE	SAMPLE WIDTH	P2O5 (%)	CaO (%)	MgO (%)
SSD06	181	50217	FOS		6.15	8.71	0.84
SSD06	182	*50219	FOS	-	5.43	7.90	2.00
SSD06	180	*50220	FOS	-	5.39	7.57	1.55
SSD06	176	*50222	FOS	-	4.91	6.99	1.70
SSD06	180	*50224	FOS	-	6.32	8.98	1.79
SSD06	180	*50229	FOS	-	4.36	6.22	2.83
SSD07	163	*50232	FOS	-	5.03	7.22	1.98
SSD08	175	*50236	FOS	-	7.66	16.60	2.15
SSD08	175	50238	SLT_C	0.50	4.49	6.10	0.28
SSD06	265	*50935	FOS	-	6.47	9.90	3.28
SSD06	179	*50945	FOS	-	5.54	9.58	1.34
SS01-C	220	*50952	SLT_R	-	10.61	14.70	0.87
SS01-D	221	*50953	SLT_R	-	4.35	5.94	0.91
SSF-04	229	50126	SLT_R	1.00	3.71	5.22	0.73
SSF-10	235	50132	SLT_C_R	0.60	5.01	6.34	1.18

* Although collected to be representative of the sampled unit, due to the nature of regional rock sampling they do not form specific widths and should be considered grab samples. Consequently, they may be to some degree selective and may not be representative of mineralized units.

Analytical work was conducted by in their Vespasiano facility in Brazil. SGS Geosol is an ISO certified laboratory and as part of the SGS group of laboratories is widely recognized as an expert in geochemical analysis and assaying.

To view the São Fransisco map associated with this press release, click on the following link: http://media3.marketwire.com/docs/e528m.pdf

In light of these developments and based on these results, Eagle Star Minerals has decided to proceed with the next stage of exploration on the Ruth Project and is planning to carry out a more intensive systematic channel sampling program to assist diamond drill targeting.

During the next stage of exploration in Ruth, Eagle Star is planning to dig manual pits in the Paes Landin block to cover the gaps between the mineralized layers discovered in various trenches. This will give the company a better idea as to how thick these layers are, while selecting appropriate drill targets within the block. In addition, the company is planning to perform extensive channel sampling on road cuts and outcrops in the São Francisco block to get more information on the minimum thickness of the visibly mineralized phosphate layers on that block.

"Our team is very pleased with the trenching results that have come back from our Paes Landin block to date. They demonstrate that we are indeed on track to identifying a phosphate deposit within the largest agrarian country in the world," stated Eran Friendlander President and CEO. "We are equally excited with the new addition of the Sao Francisco block. Our regional sampling results clearly demonstrate the logic behind the claiming of this new area. We now look forward to investigate in more detail the extensive outcrops we have identified on that block as part of our effort to select the best potential targets for a drilling campaign in Ruth."

As a result of its decision to proceed with next stage of exploration on Ruth and based on the terms of the finder's fee agreement published in the Company's news release dated June 16^th 2011, Eagle Star will issue 700,000 of the Company´s common shares to the generators of this opportunity. All shares will be subject to a 3 month hold after which, 25% of the total amount will become free trading followed by additional increments of 25% becoming free trading within 12, 18 and 24 months respectively. All shares issued as part of this finders fee payment will be subject to TSX Venture approval.

In addition, Eagle Star Minerals wishes to announce that, in accordance with the policies of the TSX Venture Exchange, the board of directors has approved a grant of incentive stock options to twelve f h C mp ny' c, ff c, v sors, and employees to purchase an aggregate of 2,030,000 common shares pursuant to its 2011 stock option plan.

All options granted as per this press release will have an exercise price of $0.22 per common share and expire on May 27, 2017.

John Harrop, P.Geo, FGS, of Coast Mountain Geological Ltd., a qualified person under NI 43- 101, reviewed and approved the technical disclosures of this press release on behalf of the Company.

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