In article ,
Thomas Lee Elifritz wrote:
James Nicoll wrote:

At this point in time, Earth is the richest known source of
fissionables, although it seems reasonable that Mars might also have
ore beds. Io is probably worth a close look, as well.

Sure, if you are interested in frozen mud, Mars has lots of it.


Mars has or had geological processes of the sort that
concentrated useful materials on Earth.


You'd be better off looking for meteorite fragments on Mars.

Meteors are not as far as I know particularly rich sources
of either uranium or thorium, If I recall correctly, any random
bit of granite has about 180x the uranium of a random meteor and
about 150x the thorium.

If some meteors have a lot of either uranium or thorium,
we'd probably be better off looking for the parent body in the
belt that they came from.
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