Thanks. So an ore with a high aluminium content that also has some amount of e.g. iron (I read that as an example in another comment?) would be worse than an or

Thanks. So an ore with a high aluminium content that also has some amount of e.g. iron (I read that as an example in another comment?) would be worse than an ore with much less aluminium, but where everything else is "more different". Or where it actually does contain a multitude of metals that would be inconvenient in an alloy, but that happen to be bound to different "carriers" that are easy to separate before splitting the molecules. Interesting. Really makes one admire the geological processes that gave us those convenient ores.