The Fish Hook Prospect occurs within the interpreted 8,000-metre eastern extension of the Cathedrals Belt.
A soil survey was carried out at Fish Hook over a number of prospective magnetic features to test whether geochemical sampling could detect the presence of ultramafic rocks and/or nickel-copper sulphides through the thin cover sequence.
Location of soil orientation survey lines (dark blue) overlaying magnetic imagery. The black dotted lines represent the interpreted boundary of the Cathedrals Corridor, known to host nickel-copper sulphide bearing intrusive rocks in this belt
Laboratory assays of soil samples from the Fish Hook Prospect have returned highly anomalous values for nickel, copper and platinum group elements (PGEs).
The westernmost soil line at Fish Hook returned several anomalous samples with the highest laboratory assays of 446 ppm nickel, 66 ppm copper and 10 ppb platinum.
Notably, the assay values for Fish Hook significantly exceed assay values for a comparable soil survey at the Investigators Prospect where extensive high-grade nickel-copper sulphides have been intersected by drilling.
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John Prineas, St George Mining Executive Chairman said: “The results from the initial soil survey at Fish Hook are remarkable and support the potential for nickelcopper sulphides at depth.
“The fact that these high value results were returned from an orientation survey is highly encouraging and shows that nickel-copper mineralisation could potentially be widespread along the entire Cathedrals Belt.
“We are also excited to have commenced a new and optimised EM programme on the western section of the Cathedrals Belt, which we believe is likely to generate more EM targets for drilling.”
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Significantly, the highest soil value at Fish Hook is coincident with a linear magnetic feature that is interpreted to be a structural setting known to be associated with nickel-copper sulphides elsewhere in the Cathedrals Belt.
Whilst only a small survey, the highly anomalous results at Fish Hook substantially enhance the prospectivity of this underexplored area.
A large soil survey is being planned for the broader area of the Fish Hook Prospect.
The survey is scheduled to commence later this month, following which an electromagnetic survey will be designed for Fish Hook to search for bedrock conductors at depth below the cover.