*dons nerd goggles*
I can't see sh*t now, but here goes!
The history of the spelling of the metal element which the English now spell "Aluminium" is a bit more involved than most realise. It even went through a phase of being spelled "Alumium", which is how it was spelled originally by its original namer, Sir Humphrey Davy. 'Alum', the root, is Latin and means bitter salt (IIRC in chemistry, 'alum' is a double-salt compound and is definitely NOT to be confused with sherbet, especially when a chemistry teacher offers you a bag of 'sherbet', the bastard...although it was kinda funny...afterwards).
Anyway, Davy basically cocked up the spelling, then changed it to Aluminum (!) and then afterwards to Aluminium.