It shows that Iridium ore can be found at y levels -64 to 16 when holding shift over iridium ore int he sides bar, but it does not show that it spawns anywhere in the overworld and the only other way of getting it is by making a titanium drill for the Eletric quarry, please make it easier i love this modpack but its too hard to grind

Try getting UU-Matter from tech reborn and crafting Iridium Ore with it

thanks working on its its hard you never really get any from scrap boxes

Iridium ore does not spawn in the world, the difficulty of getting platinum is an intended feature.