Christian Ramos wrote:
Good to know that their are possibilities. You mentioned that some mapping
had occurred of abundances, can you point to a particular project or mission
for me to follow up on for my interest. I'm particularly interested on the
lunar side of things, but a Mars reference would be of use as well.

Lunar Prospector and Mars Odyssey (both of which carried
a Gamma Ray Spectrometer). I posted links to maps in my
previous reply.