Significant potential for large scale nickel sulphide mineralisation was confirmed by nickel discoveries made by BHP Billiton and St George in 2012.
Nickel Sulphides at the East Laverton Project
Exploration drilling by St George and BHP Billiton Nickel West in 2012 (under a now concluded farm-in deal) discovered nickel sulphides at East Laverton.
Drilling results showed multiple occurrences of magmatic nickel and PGE sulphides over a broad area of the East Laverton Project, confirming the fertility of the extensive ultramafic belts for significant nickel sulphide mineralisation.
There a three main ultramafic belts at the Project with a total strike length of more than 130km - the Stella Range belt, the Central belt and the Minigwal belts. These are very thick ultramafic belts with 160m @ 0.25%Ni from 8m in CAMRC001; 150m @ 0.22%Ni from 0m in CAMRC002 and 98m @ 0.21%Ni from 102m in ATHDD001.
The MgO rich ultramafic rocks at East Laverton are compositionally very similar to the ultramafics at the Agnew-Wiluna belt, the most significant nickel belt in Western Australia with several world class nickel sulphide deposits. This important feature suggests that the East Laverton Project could host nickel sulphide mineralisation on a scale similar to Agnew-Wiluna.
St George has established a large pipeline of prospects that provides considerable exploration upside for the company at East Laverton.
A key part of St George’s exploration strategy has been an investment in moving loop ground electromagnetic surveys over areas of interest. These surveys are managed by Newexco, highly respected geophysical consultants with a track record of major nickel discoveries.
The figure below highlights the pipeline of prospects across the East Laverton Project.
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