I think it can be uranium ore deposits.

For Uranium, you will want to explore Uranite. It is almost always oxidized, so the composition will be a range between UO2 and U3O8. Thorium is almost always found as a substitute for U, so there is a series between uranite and thorianite.

Deposits come in a wide variety of settings from pegmatites and granitoids, high temperature hydrothermal veins (Cornwall, England), silver deposits (Czech Republic), detrital sands (Canada) and even mica deposits (U.S.A.).

I have an original concept that seems interesting... But since I don't work in the industry, I don't have the opportunity to test it.

Regards,

Laszlo

https://doi.org/10.1144/sp350.1

Granite-Related Ore Deposits (Geological Society Special Publication, Volume 350)