Vancouver, B.C. -- Sept 9, 2010: San Marco Resources Inc. (SMN: TSX.V) , (The Company), is pleased to report its best trench results from recent exploration at its 5,930 hectare, 100% owned gold/silver Tecomate Project in Durango State, Mexico.(tecomate plan map) The new zone, called the Brenda Zone, is roughly 300m x 1400m (still open) (brenda zone plan map), and located 1.3 km SW of the Main Zone. The trenches were cut across two mineralized structural trends known as the Brenda and Upper Workings. Results of the trenches are as follows:

UPPER WORKINGS:

• Trench B2: 1.83 g/t gold and 157.70 g/t silver over 23.0m (open)	(4.29 g/t Au/Eq*)
• Trench B1: 0.82 g/t gold and 30.77 g/t silver over 11.4m (open)	(1.30 g/t Au/Eq*)

BRENDA WORKINGS:

•Trench B3: 2.5 g/t gold and 9.5 g/t silver over 6.1m

((2.65 g/t Au/Eq*))

*Au/Eq = Gold Equivalent using a 64:1 silver/gold ratio

All trench sampling was 2 or 3m continuous channel samples. Dense vegetation and topography has limited the length of trench construction in some cases. Trench B2 has been extended to the east with additional assays expected soon. .

An artisanal mined open cut was discovered between trench B1 and B2, where miners excavated a higher grade structural zone. Channel samples across this zone extending to the south are:

• 7.42 g/t gold & 401 g/t silver over 1.1m	(13.69 g/t Au/Eq*)
• 3.1 g/t gold & 75.2 g/t silver over 1.5m	(4.28 g/t Au/Eq*)
•0.52 g/t gold & 34.7 g/t silver over 1.7m	(1.06 g/t Au/Eq*)
•3.37 g/t gold &197 g/t silver over 1.4m	(6.45 g/t Au/Eq*)

*Au/Eq = Gold Equivalent using a 64:1 silver/gold ratio

Ongoing exploration at Tecomate has identified 3 additional areas of gold and silver mineralization where results will be disclosed when received by the Company.

San Marco Chairman Robert Willis stated "Our exploration team at Tecomate continues to methodically explore and discover gold and silver mineralization in areas not previously known to exist. We have a lot of work to do to fully understand the geology and structural setting of this multiple caldera mineralized system. Our initial drill program will give us the first modern day third dimension to surface mineralization, and help guide us through continued exploration success. "

As previously announced in its July 20 2010 press release, the Company will commence an initial 1200m diamond drill program to test at least three targets.
The technical information contained in this press release has been based on information reviewed by San Marco's President, Robert D. Willis, P. Eng., a 'qualified person' for the purpose of National Instrument 43-101, Standards of Disclosure for Mineral Projects of the Canadian Securities Administrators.

For further information contact:

Robert D. Willis
Chairman & CEO
604-813-2606
rdwillis@telus.net

Mike Mallard
V.P. Corporate Communications
604-506-3776
mmallard@sanmarcocorp.com

Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the adequacy or accuracy of this release.