duplication of Aluminium ?

[0Navis0]

I really don't understand what it has been tried to do with the Aluminium, it is duplicated with Alumina wich is supposed to be the same ore with a different name, but Substratum implements too different ore. I frankly don't understand it and I find this idea pretty stupid, it creates a lot of confusion, useless blocks and items, and some unwated icompabilities with other mods.