IGO Core Geophysics Collaboration Final Report Eastern Contact Airborne Electromagnetic Survey Lake Mackay Project EL 30729, EL 30730, EL 30731 and EL 30732

Abstract

This Collaboration program was a SPECTREM 25Hz Airborne Electromagnetic Survey covering distinct linear magnetic features within the Lander Rock Formation to the west of the pyrrhotite associated Grapple prospect, which is coincident with a linear magnetic feature and is detectable using airborne electromagnetic techniques due to the conductivity of the pyrrhotite. The survey is within the Aileron Province, just north of the Central Australian Suture that marks the contact between the Warumpi and Aileron Provinces of the Arunta Region. The survey commenced on the 13 June 2018 and was completed on 22 June 2018. The objective of this survey was to detect conductors that could be derived from 'Grapple Style' mineralisation and further define areas that could be amenable to soil sampling techniques. This has been successfully achieved with the program identifying late time conductors which are indicative of massive sulphides. Additionally, the depth of regolith derived from this survey has defined areas in which soil sampling will be an effective test for mineralisation that may not have a conductive signature.