The 64 RAB drill samples submitted were divided into 3 major groups of Proterozoic age : a complex association of metasediments, meta-igneous and metasomatised rocks, all containing variable magnetite.

Bedrock sampling and petrological examination (via the drilling of 266 shallow RAB holes, total penetration 3111 m), following the interpretation of airborne and ground geophysical surveys, did not succeed in locating a Middle Proterozoic...