Originally Posted by
JudicatorPrime
The better question is what was the source of the vibranium? If it was projectum from the Big Bang, then there is vibranium throughout the multiverse. One of the more commonly accepted beliefs in science is that just about every element that has ever existed is present in some form or another across all creation. But if the vibranium was hypothetically speaking an artificially created metal -- say, the alloy of armor, an instrument, weapon or other utensil from one of the primordial Celestials back in the time of the First Firmament -- then the amount of vibranium in the multiverse would be very finite. Sure, you might find it wherever said Celestial roamed, but perhaps not as much as we'd.
As for the trajectory of the meteor, no one knows. It's a safe bet that some of the mound likely fragmented upon entry into Earth's orbit. Small enough particles might have also been evaporated from the heat of entry. Vaporized metals are dangerous metals, but it's possible there is tiny particulates of gaseos vibranium in our atmosphere from the meteor event. We don't know the original size of the meteor, but it wasn't of sufficient mass to end the Earth as we know it. It wouldn't surprise me if there were small deposits discovered around the planet, perhaps even at the ocean's depths.