IGO Core Geophysics Collaboration Final Report Andrew Young Igneous Complex - Airborne Electromagnetic Survey Lake Mackay Project EL 30733, EL 30739, and EL 30740

Abstract

This Collaboration program was a SPECTREM 25Hz Airborne Electromagnetic Survey covering distinct linear magnetic features within the Lander Rock Formation to the east of the pyrrhotite associated Grapple prospect, and circular magnetic features interpreted to be mafic intrusions prospective for massive sulphide mineralisation. 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 7th November 2018 and was completed on 28th November 2018. The objective of this survey was to detect conductors that could be derived from 'Grapple Style' mineralisation, further define areas that could be amenable to soil sampling techniques, and test for conductors which could be associated with mafic intrusions. 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.