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Comment by ninalanyon

1 month ago

> That's pure uranium,

Not exactly.

Yellowcake is about 80% uranium oxide:

"Triuranium octoxide (U3O8), the most stable uranium oxide; yellowcake typically contains 70 to 90 percent triuranium octoxide)"

https://en.wikipedia.org/wiki/Uranium_oxide

The atomic weight of Uranium is 238; the atomic weight of Oxygen is 16. By weight, Triuranium octoxide is ~84% Uranium. Even if you're only counting the uranium in the Triuranium octoxide, that's still 60+% of the total mass coming from Uranium Atoms. I'd take that purity any day.