Uranium is one of the most abundant elements on the planet.
This surprises many people, who assume it must be rare because it’s valuable, and valuable things are typically rare. Uranium is not rare. It’s as common as tin or zinc. Swing a cat in the Earth’s crust and you’ll hit some uranium. If you want some uranium, go outside and get a rock. Pitchblende is your best bet, but so long as you pick a really boring rock, there’s probably a little uranium inside.