San Marco Resources Inc. has received the preliminary results of a petrographic study completed on a large 1 meter x 2.5 meter panel sample taken from the old Tompiate underground workings (100 meters below surface) on the Angeles property in Sonora State, Mexico. As reported in News Release dated November 27th, 2012, a channel sample was taken across a 1 meter wide massive hematite structure in the old underground workings and assay results were: 5.92 g/t gold; 59.0 g/t silver; 1.34% copper and 5.43% combined lead/zinc. The panel sample, taken from the same location as the above channel sample, was sent to Laboratorio Technologico Metalurgico, a private lab in Hermosillo, Mexico, and was prepared for initial petrographic studies. The primary purpose of this study was to try to identify minerals of economic interest, since only copper, lead and zinc oxide minerals are recognizable in hand samples from underground or on surface.

A representative cut of this sample was sent to ALS Chemex for assaying and results are: 11.20 g/t gold; 54.8 g/t silver; 1.98% copper and 4.21% combined lead/zinc. Early mineralogical results indicate native gold exists as very fine particles (free and associated with tiny quartz crystals), also copper (chalcopyrite and copper oxides chrysocolla and malachite), lead (galena and Pb oxide wulfenite) and zinc (sphalerite and Zn oxide smithsonite).