TL;DR: Lunar KREEP REE Assessment is a main entry in the 外星矿物知识引擎 database.
Apollo samples from KREEP-rich regions show elevated REE concentrations. Lunar Prospector gamma-ray data mapped thorium (a KREEP proxy) distribution globally. However, detailed REE distribution and extractability remain poorly characterized.
Resource
Rare Earth Elements
Assessment Method
Apollo sample analysis, orbital gamma-ray spectroscopy (Lunar Prospector)
Estimated Value
Significant but lower grade than terrestrial deposits