evidence: The Samapleu licence is located adjacent to the large nickel-cobalt laterite deposits of Sipilou North, Foungouesso, Moyango, and Viala. As is common in numerous documented intrusions, the emplacement of the Samapleu sequences is related to intense tectonic activity. However, the specific character of the Samapleu sequences is the fact that the magmatic intrusion originated from the lower continental crust at a depth of about 25 km. [...] The Sipilou Sud laterite deposit is characteristic of typical nickel laterite deposits formed in a seasonally wet tropical climate, on weathered and partially serpentinized ultramafic rocks. Features of nickel laterites include (Ellias, 2002):