Abstract

Summary A powerful airborne electromagnetic system is the optimal choice for deep targeting of conductive bodies. Variations in the receiver induction coil specifications can be used to optimise the system for various purposes. Providing the possibilities for maintaining focus on optimal depth penetration by using the high area and low frequency coil or choosing the lower area and high frequency coil to obtain more surface near details and a more cost-effective survey. The survey around Skouries, Greece, was conducted with a setup that allowed for more surface near resolution and higher acquisition speed. The survey results have clearly mapped the well know Skouries deposit as a conductive body and has at the same time indicated two possible satellite conductive bodies. The Okiep Copper Project, South Africa, was flown with a setup optimized for maximum depth penetration. A series of late-time electromagnetic targets have been identified. The first target has been drilled and the drillhole has successfully intersected a pyrrhotite-chalcopyrite mineralisation.

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