Just to check: are you referring to IC2 iridium, as obtained by the shards normally found in loot chests, or the iridium from thermal expansion, which can be obtained as an ore block?
I believe the Loonium from Botania will obtain the former, and the Mining Laser from IF will obtain the latter - however I do not know if the products of the two are oreDicted (i.e. whether you can use either in recipes). What do you need it for?