Peregrine has line of sight to the prize at its Mallina gold project in WA’s Pilbara region after an airborne survey identified numerous Hemi-style intrusive targets.

Geophysical interpretation of data from the survey carried out early this year highlighted up to 84 late intrusive features in clusters which may represent Hemi-style targets.

Discovering these coveted targets is the chief goal of Peregrine Gold (ASX:PGD) at the Mallina project given that De Grey’s play opening Hemi discovery about 100km to the southwest has grown rapidly since it was first found in late 2019 into a 8.5Moz resource.

The interpretation by Fathom Geophysics also identified three geological domains including an extensive block of Mallina Basin sediments and Millindinna Suite intrusions which underlie a Phanerozoic cover sequence.

To top it off, the basement has been interpreted to have similarities in structural and lithological character as De Grey’s Mallina Basin gold camp, which hosts the Hemi discovery.

More than just gold

While finding potential for Hemi-style gold targets is a big positive for the company, that is not all that is present at the Mallina project.

A review of WAMEX open file reports within the project has also highlighted the potential to host nickel, copper and platinum group element mineralisation.

This highlighted historical results such as 30m grading 0.2% copper, 142 parts per billion gold, 196ppb palladium and 318ppb platinum from a down-hole depth of 60m (DGRC016) and 4m at 0.23% copper from 73m and 3m at 112ppb gold+palladium+platinum from 74m (DGRC022).

These and other drill holes are concentrated over a small area on one magnetically anomalous feature while a Rio Tinto hole about 6km to the northeast intersected a package of dolerites, gabbros and pyroxenite ultramafic rocks.

Peregrine noted that while the latter hole was never submitted for analysis, inspection of the historical drill core revealed evidence of potential primary nickel mineralisation within a portion of core sampled from 200.9m to 201.15m depth.

Upcoming activity

The company now plans to lodge a Programme of Work application with the Department of Mines, Industry Regulation and Safety over the 1,728km2 project.

It intends to undertake heritage clearance surveys before carrying out reverse circulation drilling of priority gold targets.

Additional geophysical techniques including gravity surveys will also be carried out.

Peregrine will also conduct detailed mineralogical and micro-XRF scanning to fully characterise the sulphide blebs and alteration features noted in the Rio Tinto hole and drill close to DGRC16 to fully evaluate the historical PGE mineralisation.

Other holes will also be drilled to the west of DGRC16 to test a gravity anomaly interpreted by Fathom along with geophysical work to identify conductive targets.




This article was developed in collaboration with Peregrine Gold, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.