THE DRILL SERGEANT: Ardea Resources (ASX: ARL) reported assay results it claims to have confirmed komatiite-hosted basal nickel sulphide located above a felsic volcanic footwall contact at the Emu Lake prospect, 70km north-east of Kalgoorlie in Western Australia.
Ardea Resources drilled hole AELD0002 in April 2021, targeting a strong down-hole electromagnetic (DHEM) anomaly 50m north of earlier drill hole AELD0001, intersecting 0.65m of massive and semi-massive nickel sulphides and 1.1m of matrix and disseminated nickel sulphides.
Assays for this zone returned:
1.1m at 4.78 per cent nickel, 0.16 per cent copper, 0.47 grams per tonne platinum, 0.2g/t palladium from 366.9m (semi-massive sulphide), within a broader zone of 4.8m at 1.44 per cent nickel, 0.09 per cent copper, 0.2g/t platinum, 0.09g/t palladium from 365.9m, including a disseminated zone down to a cut-off of 0.3 per cent nickel.
The company explained this is one of the best nickel sulphide intercepts it has achieved at Emu Lake to date, claiming it demonstrates the prospectivity of this new western ultramafic position that has received minimal attention from historic exploration, thus opening up an entirely new target horizon.
“This new basal contact intercept provides a platform to test along this stratigraphic horizon for channel positions where the sulphides are insitu and expected to be thicker,” Ardea Resources managing director Andrew Penkethman said in the company’s ASX announcement.
“The available geophysics is showing there is potential for such a channel to exist below AELD0002 which could extend for a considerable length in a similar fashion to the Silver Swan channel.
“It is interesting to note that earlier surface EM surveys have not been able to detect these sulphides, demonstrating the potential to open up a previously un-tested, albeit deeper, search space at Emu Lake.”
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