TARGET: Possible primary magmatic platinoid and/or other precious metals deposited at or near the base of expected cumulate layered rock sequences within the Black Hill Norite. EXPLORATION: After making preliminary regional geophysical and drillhole data studies to clarify the prognostic geological setting of the target intrusion, four ground magnetic profiles and one colinear Sirotem traverse covering 12.8 line km were run over a zone of arcuate magnetic anomalies, inferred to represent associated sill-like bodies intruded around the south-western margin of the Black Hill Norite magnetic signature. Follow-up inclined RC drilling of Kakoonie 1 to 256 m total depth then tested a conductive area of the inferred lower boundary of the norite complex. RESULTS: Kakoonie 1 intersected a concealed contact zone formed between Palaeozoic metasedimentary country rocks and a mafic gabbroic body of similar composition to the Black Hill Norite, thereby demonstrating that the gabbro at Black Hill and Cambrai is part of a much larger complex than had previously been demonstrated. Observed geological, geochemical and geophysical data patterns within the basement rock types found at the Kakoonie 1 location (gabbro, dolerite, norite and aplite) are not consistent with the existence of cumulate layering, but are possibly related to near contact aureole hybrid-origin magmatic petrology. The microscopic but pervasive distribution of trace economic sulphide mineralisation (pyrite, pyrrhotite and chalcopyrite) within the basement lithotypes is encouraging to ongoing exploration, and laboratory tests of ore separation feasibility have produced a viable sulphide concentrate from stored drill core samples. Additional drilling in the main intrusive body lying to the north and north-east is recommended, to test adequately for the presence of cumulate layering away from the influence of igneous contact factors.