Strange fact, contrary to popular belief in the UK the word is Aluminum in the rest of the world. We changed it after British chemist Humphrey Davy called in Aluminum (originally alumium but chemists from France, Germany and Sweden objected). Its one of the few words that British English gets wrong
Just to add to that ...over the past few years I've been doing a lot of local heritage stuff and going back into late victorian times a lot of newspapers have different spellings to what are used today, the ones I noticed are Labor and color...dropping the 'u' seemed to be quite common.
While true that doesn't paint the whole picture. It was invented by a Brit who called it aluminum but quickly changed it to aluminium. It was called aluminium in both Britain and the USA for almost 100 years before it became more widely produced and the US started to change back to aluminum because that's how their most popular dictionary had incorrectly spelt it (the rest had it listed has aluminium. It was still officially called aluminium in the US after the first world war and it's official spelling over there only changed in the 1920s because everyone was spelling it wrong. I believe it's official spelling as a chemical in the world is aluminium
ye..and the Americanism Fall instead of Autumn was according to an article I read the old English term and was used by the 1st immigrants from Britishland....