I've worked with Iroko quite a lot, and this certainly looks like it.
It's a very oily wood, and when planed, has a "greasy" feel to the surface.
It also has a very distinctive smell when sawing. In the green, sawyers refer to Iroko as "Dog s##t wood".
It can contain calcium deposits, which show up as small white flecks, in the grain, which will happily take the edge of your tools, or a chunk out of your planer cutters.
It is also a well known sensitiser, and can cause asthma attacks, and allergies to wood in general.
Regards,
Neil