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A piece of carbonatite from Mountain Pass, CA containing rare earth elements. The fleshy colored minerals are bastn盲site.

The Hunt for Rare Earths: 蘑菇tv Minerals Analysis Could Help Secure America鈥檚 Tech Future

By Ted Griggs, April 20, 2026
AMAC, Geology & Geophysics, MPI, Research, electron probe microanalyzer