Intra Energy Corporation Limited announced that it has identified 13 anomalies following the 400m line spaced airborne electromagnetic survey at its 70% owned Yalgarra Project in Western Australia. The Yalgarra licence is located 125km east of Kalbarri in Western Australia in the northern sector of the West Yilgarn Ni-Cu-PGE province. Exploration targeting magmatic nickel-copper-PGE mineralisation at the Yalgarra Project commenced in July 2022, with a 400m line spaced airborne survey run across the licence by contractor NRG using their Xcite helicopter-borne electromagnetic system.

A total of 1,101 line km of surveying was completed, and in total 13 discrete conductors were identified in the airborne survey by geophysical consultant Newexco, who evaluated the data line by line to highlight any anomalous conductive features. Many of the conductive features closely coincide with interpreted magnetic mafic-ultramafic intrusions. This work was successful in highlighting a series of compelling conductors that cannot be explained by any observed surface features or known geology (such as graphitic units) and which require on ground follow-up.

If the conductors are sulphide mineralisation, then only massive sulphide (& not disseminated sulphide) would be expected to provide detectible bedrock conductors using this system. Continuous EM responses due to weakly saline water within alluvial sediment tracts of the Murchison River and larger streams were observed within the project area and dismissed as valid targets. On-ground follow-up will comprise initial surface mapping and multi-elements soil geochemistry to understand the geological context, and if a likely bedrock source is confirmed, complete ground based moving loop EM to constrain geometry and intensity of the feature for drill testing.

Mapping of sporadic outcrops within the project area shows the geology predominantly comprises variably deformed granitic gneiss with some less deformed and coarse-grained K-feldspar granite. Mafic to ultramafic rock exposures are widespread within the project area and comprise E to NE-trending deformed and altered talc-amphibole ultramafic intrusions of probable Archean age better developed in the northern block, and N-NNE trending relatively undeformed medium-coarse grained gabbroic rock domains of likely Proterozoic age in both the northern and southern blocks. The mafic rock domains are highlighted in Figures 1 & 2 and tend to form complex interconnected intrusion corridors which also correlate with the magnetic anomalies defined by Todd River on the adjacent Nerramyne project, which includes the emerging Chandler Cu-PGE prospect.

Soil geochemistry sampling over the entire licence commenced in July but has been hampered by recent persistent rain in the project area. About 40% of the planned sampling has been collected to date and samples submitted for a full suite of multi-element analysis. The EM survey has highlighted some additional areas that require more focused sampling, and the Company is looking forward to completing the geochemistry as soon as conditions allow.