Geophysics Survey Identifies Further Gold Potential
Tesoro Resources Limited (ASX: TSO) has completed an expanded Gradient Array Induced Polarisation (GAIP) survey completed at the El Zorro Project in Chile, expanding the previous GAIP survey.
The expanded GAIP survey was made up of 41 lines of GAIP surveying using 50m spaced survey lines and 25m station spacing have been completed along north-east and south-west oriented survey lines.
GAIP survey data was acquired by Quantec Geoscience (Chile) and processed and interpreted by geophysical consultants Resource Potentials Pty Ltd (Perth). IP surveying measures both chargeability and electrical resistivity of the subsurface.
Managing Director, Zeff Reeves, said results from the expanded GAIP survey have been correlated to existing drilling results and geological mapping, which indicates that IP surveying is effective for targeting high-grade gold bearing structures at El Zorro. This GAIP survey extension has identified multiple prospective north- south trending fault zones which are known to host gold mineralisation at Ternera.
The survey also highlighted a high chargeability anomaly in the north of the expanded survey grid, which coincides with a previously unknown zone of outcropping El Zorro Tonalite (EZT), the main gold hosting lithology at El Zorro.
“GAIP surveying is proving to be an invaluable tool for assisting gold exploration at El Zorro and the result of this expanded survey has provided immediate exploration upside with the identification of a previously unknown, outcropping zone of the EZT, the main gold host at El Zorro,” Mr Reeves said.
“The Tesoro team have had recent success delineating the Ternera East target using GAIP surveying and now we have uncovered a promising new target approximately 1.5km north of Ternera using the same method.
“This new target highlights the potential of El Zorro to continue to expand in scale with the prospective rock types and structures now mapped out to be continuous over a strike length of 4km and open in all directions”.
At Ternera, high-grade gold mineralisation is associated with quartz veins and breccias having a high sulphide content and is therefore conducive for detection by IP surveying techniques. GAIP surveying provides a 2D map of chargeability and resistivity/conductivity trends in the underlying geology over a survey grid area and is effective in the top 150m from land surface. GAIP surveying has also been used successfully to identify linear features, which correlate with gold bearing fault zones at El Zorro.
