Protactinium Uranium ore inside a Revigator
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Uranium ore (inside a Revigator).
My Revigator, which contains quite a bit of carnotite uranium ore, probably has more astatine, francium, actinium, and protactinium in it than my depleted uranium metal samples, even though they have far more uranium in them. Look under uranium for a more detailed explanation about what a Revigator is.

Source: eBay seller bettyboop
Contributor: Theodore Gray
Acquired: 13 November, 2002
Price: $90
Size: 12"
Purity: <0.1%