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Tesoro Resources Limited

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West Perth, WA 6005

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ESPINA PROJECT

The Espina project, located 50km south west of Santiago, on the eastern margin of the coastal Cordillera of central Chile within the coastal range Cretaceous magmatic belt.The district scale project area, is within a historic gold and copper mining region which hosts numerous world class deposits and is prospective for gold, copper and silver.

 

The Espina project consists of several epithermal vein systems with historical mine workings and prospects that were mined during the early to mid-1900s. The project area has been subject to modest scale historic underground mining at the La Librera target, with high grade gold ore having been mine with government records indicating a head grade of 22.50g/t Au having been mined.

 

The geology and mineralisation at Espina are analogous to the Alhué intermediate-sulphidation epithermal vein-type Au-Ag-Zn deposits at Yamana’s La Florida mine, 24km to the south.

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Several programs of mapping, channel chip sampling and rockchip sampling have been undertaken on the various prospects with encouraging results.

 

Large  soil geochemical anomalies exhibiting typical epithermal gold system characteristics have been identified along two strike extensive structural zones where epithermal quartz veins are outcropping.

 

 No drilling has been completed on the property and Tesoro’s focus is to delineate high potential drill targets along the identified epithermal vein systems for future drill programs.

Geological map over the Puertelera and Infernillio structural trends showing gold in soil anomalies and rock chip results

High Grade Gold in Maipo Valley, Chile