The Wedge of Aiud

The Claim
Aliens left a piece of crafted aluminium on Earth 10,000 years before humans discovered it.
The Aluminium wedge of Aiud is a seemingly cast aluminium wedge shaped object that was found on a construction site about 35 feet below the surface, along with 2 mastodon bones.
The reason that the wedge is considered such an unusual find is that if it were in the same ground layer as mastodon bones, that would make it no less than 11,000 years old, and since aluminium wasn’t discovered until 1825 due to the technique required in its smelting process, it raises the question, “Who made it?”.
Of course, there are those who straight away claim it was aliens, but the technology required to produce this type of metal is less than 200 years old, and there have been no signs throughout history that any civilisation that’s ever existed has even come close to being advanced enough to produce it.

The reason no one could have produced it until recently is because this is one metal that you can’t smelt directly from its ore, as it doesn’t appear as an ore. The raw material, called Bauxite, is found within types of clay and is dissolved out using various chemicals. It is then put through a machine that uses electrolysis to extract the aluminium oxide particles, which then undergo various other advanced processes before being transformed into an actual bar of metal.
The wedge of Aiud was named after its point of origin, Aiud in Romania. In 1974, a construction crew claimed they found it at a depth of 35 feet. This is the problem with the wedge being dismissed as nothing more than a piece of machinery by most people, as aluminium can’t be carbon-dated.
Perhaps the wedge is 11,000 plus years old, or perhaps it’s nothing more than a piece of some kind of construction machinery, but if it is as old as some say, then what could it be? maybe the foot piece off an alien landing craft, or merely a tooth from an excavator machine.